JIS Flanges

What are JIS Flanges?

JIS flanges are pipe flanges manufactured and used in Japan. They are designed to meet Japanese Industrial Standards (JIS) and are commonly used in Japan and other parts of Asia. JIS flanges are available in a variety of pressure ratings, from low to high pressure, and are made from a wide range of materials, including carbon steel, stainless steel and cast iron. JIS flanges are similar to other types of pipe flanges, such as ANSI flanges, in that they are used to connect pipes, valves and other piping components. However, JIS flanges have some unique features that make them distinctive. For example, they are typically made of flat surfaces rather than convex surfaces as many other flanges are. They also use a different numbering system for their size and pressure class designations. If you are working on a project that requires JIS flanges, be sure to use the right type and size for your application. Using the wrong flange can lead to problems such as leaks or system failure. It is also important to ensure that flanges are properly installed in accordance with all relevant standards and guidelines.

Advantages and disadvantage of JIS Flanges

JIS (Japanese Industrial Standard) flanges are used in piping systems in Japan and other parts of Asia.Some of the advantages of JIS flanges include.

• They are precisely dimensioned to ensure a tight seal when used with JIS flange gaskets.
• They are available in a wide range of sizes and pressure ratings for a variety of applications.
• They are made of high quality materials such as carbon steel, stainless steel and aluminum, which makes them durable and corrosion resistant.
• They are easy to install and maintain.

Some disadvantages of JIS flanges include.

• They may not be compatible with flanges from other standards, such as ANSI (American National Standards Institute) or DIN (German Standards Institute).
• They may not be widely available in all countries, which may result in longer lead times and higher procurement costs.
• The use of JIS flanges may require special tools and equipment, which may increase the overall cost of installation and maintenance.
• They may not be suitable for high temperature or high pressure applications.

What are the different types of JIS flanges?

JIS flanges are flanges that conform to the Japanese Industrial Standard (JIS) for flanges and pipe fittings. JIS flanges are used in Japan and other countries in Asia. There are several types of JIS flanges, including the following: JIS B2220-1984 Flanges (5K, 10K, 16K, 20K, 30K, 40K) – These flanges are rated based on their pressure capacity and are available in sizes ranging from 15mm to 2000mm in diameter. JIS B2220 flanges are a type of flange commonly used in Japan and other parts of Asia. There are several types of JIS B2220 flanges, including:

• Slip on plate flange: This type of flange is designed to be slipped over the end of a pipe and then welded in place.
• Slip on hubbed flange: This type of flange is similar to a slip on plate flange, but it has a hub that extends from the center of the flange. This hub is used to connect the flange to the pipe.
• Socket welding flange: This type of flange is designed to be used with a socket weld connection. It has a small bore that allows the pipe to be inserted into the flange and then welded in place.
• Weld neck flange: This type of flange has a neck that is welded to the pipe. It is used in high pressure and high temperature applications.
• Lap joint flange: This type of flange is used in conjunction with a lap joint stub end. It has a curved surface that allows it to be slipped over the end of the stub end and then bolted in place.
• Threaded flange: This type of flange has threads on the inside bore, allowing it to be connected to a pipe using threads.
• Integral flange: This type of flange is made from a single piece of pipe, with the flange machined directly onto the end of the pipe.
• Blind flange: This type of flange is used to seal off the end of a pipe. It has no bore and is not designed to be connected to another pipe or fitting.

Material of JIS Flanges

The materials used for JIS flanges depend on the type of flange and the pressure class. Common materials used for JIS flanges include carbon steel, stainless steel, alloy steel, and aluminum. JIS B2220 flanges are available in pressure ratings of 5K, 10K and 16K and are made of carbon steel or stainless steel. Depending on the specific application and the required pressure and temperature ratings, it is important to select the right material for the JIS flange. Flanges made of the wrong material may not be strong enough to withstand the pressure and may fail, which could result in serious injury or damage.  

Stainless Steel JIS Standard Flange	ASTM/ASME A/SA182:- F304, F304L, F316, F316L, ASTM/ASME A/SA351:- CF3, CF3M, CF8, CF8M, DIN 1.4306, DIN 1.4301, DIN 1.4404, DIN 1.4401, DIN 1.4408, DIN 1.4308, DIN 1.4306, DIN 1.4409
Duplex JIS Standard Flanges	S31803 / S32205 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex JIS Standard Flanges	S32750 / S32760 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Copper Nickel JIS Standard Flanges	ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Titanium JIS Standard Flanges	ASTM B381 / ASME SB381:- Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7
	ASTM  R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 | R56400/GR.5
Copper JIS Standard Flanges	TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000, C12200, C12300, T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910, C10920, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc
Incoloy JIS Standard Flanges	ASTM B564 / ASME SB564:- Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925
Inconel JIS Standard Flanges	ASTM B564 / ASME SB564:- Inconel 600, 601, 625, 718, 783, 690, x750
Nickel JIS Standard Flanges	ASTM B564 / ASME SB564:- Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Hastelloy JIS Standard Flanges	ASTM B564 / ASME SB564:- Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X
Monel JIS Standard Flanges	ASTM B564 / ASME SB564:- Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Carbon Steel JIS Standard Flanges	ASTM/ASME A/SA105 A/SA105N and A/SA216-WCB, DIN 1.0460, DIN 1.0402, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, CS High Yield ASTM A694 / A694 (F52, F56, F60, F65, F70, F80)
Alloy Steel JIS Standard Flanges	ASTM A182 / ASME SA182:- F5, F9, F11, F12, F22, F91
JIS Alloy 20 Flanges	ASTM B462 / ASME SB462:- Carpenter® 20 Alloy, Alloy 20Cb-3
JIS SMO 254 Flanges	ASTM A182 / ASME SA182:- SMO 254/6Mo, UNS S31254, DIN 1.4547
Aluminium JIS Standard Flanges	5052 /6061/ 6063 / 2017 / 7075 / etc.
Brass JIS Standard Flanges	3602 / 2604 / H59 / H62 / etc.
Other JIS Standard Flanges material	Tin bronze, Alumunum bronze, Lead bronze, Nimonic 75, Nimonic 80A, Nimonic 90, AISI 4140, AISI 4130, Mild Steel, Al6XN

Size of JIS Flanges

JIS (Japanese Industrial Standard) flanges are available in a range of sizes, with the most common sizes being 15 kgf/cm^2 (1.5 MPa), 30 kgf/cm^2 (3 MPa), and 40 kgf/cm^2 (4 MPa). The size of a JIS flange is typically specified by the nominal diameter of the pipe it is used with, in millimeters. The nominal diameter is the inside diameter of the pipe, which is not the same as the outside diameter. JIS flanges are also designated by their pressure rating and their flange type, such as JIS 10K or JIS 20K. Do you have any more questions about JIS flanges?

Dimensions of JIS Flanges

In Japan, flanges are commonly classified by pressure rating. The classification system for flanges in Japan is the JIS B2220 standard, which includes seven pressure ratings: 2K, 5K, 10K, 16K, 20K, 30K, 40K, and 63K. The pressure rating of a flange is an indication of the maximum pressure that the flange can withstand at a given temperature. Here are the dimensions for each pressure rating:

• Flange diameter: 15 mm to 600 mm
• Flange thickness: 2 mm to 36 mm
• Bolt diameter: 8 mm to 38 mm

Dimensions of JIS B2220 5K flange standard

PN 5K. Dimensions in mm.

Nominal Dia. of Flange	Outside Dia. of Flange D	Sectional Dimensions of flange												Nominal Bolt Size	Welding
		Dia. of Bolt Circle C	Dia. Of raised Face g	Inside Dia.     Of Flange do	Outside Dia. Of Applicable pipe	t	T	Dia. of Hub		Radius r	Raised Face f	Hole Dia. H	Number of Bolt Holes
								a	b						W1	W2
10	75	55	39	17.8	17.3	9	–	–	–	–	1	12	4	M10	5	2.5
15	80	60	44	22.2	21.7	9	–	–	–	–	1	12	4	M10	5	3
20	85	65	49	27.7	27.2	10	–	–	–	–	1	12	4	M10	5	3
25	95	75	59	34.5	34	10	–	–	–	–	1	12	4	M10	5	3
32	115	90	70	43.2	42.7	12	–	–	–	–	2	15	4	M12	6	3
40	120	95	75	49.1	48.6	12	–	–	–	–	2	15	4	M12	6	3
50	130	105	85	61.1	60.5	14	–	–	–	–	2	15	4	M12	6	3
65	155	130	110	77.1	76.3	14	–	–	–	–	2	15	4	M12	6	4
80	180	145	121	90	89.1	14	–	–	–	–	2	19	4	M16	6	4
90	190	155	131	102.6	101.6	14	–	–	–	–	2	19	4	M16	6	4
100	200	165	141	115.4	114.3	16	–	–	–	–	2	19	8	M16	7	4
125	235	200	176	141.2	139.8	16	–	–	–	–	2	19	8	M16	7	4
150	265	230	206	166.6	165.2	18	–	–	–	–	2	19	8	M16	7	5
175	300	260	232	192.1	190.7	18	–	–	–	–	2	23	8	M20	7.5	5
200	320	280	252	218	216.3	20	–	–	–	–	2	23	8	M20	8.5	6
225	345	305	277	243.7	241.8	20	–	–	–	–	2	23	12	M20	9	6
250	385	345	317	269.5	267.4	22	–	–	–	–	2	23	12	M20	10	6
300	430	390	360	321	318.5	22	–	–	–	–	3	23	12	M20	10	6
350	480	435	403	358.1	355.6	24	–	–	–	–	3	25	12	M22	12	7
400	540	495	463	409	406.4	24	–	–	–	–	3	25	16	M22	12	7
450	605	555	523	460	457.2	24	40	495	500	5	3	25	16	M22	12	7
500	655	605	573	511	508	24	40	546	552	5	3	25	20	M22	12	7
550	720	665	630	562	558.8	26	42	597	603	5	3	27	20	M24	12	7
600	770	715	680	613	609.6	26	44	648	654	5	3	27	20	M24	12	7
650	825	770	735	664	660.4	26	48	702	708	5	3	27	24	M24	12	7
700	875	820	785	715	711.2	26	48	751	758	5	3	27	24	M24	12	7
750	945	880	840	766	762	28	52	802	810	5	3	33	24	M30	12	7
800	995	930	890	817	812.8	28	52	854	862	5	3	33	24	M30	13	8
850	1045	980	940	868	863.6	28	54	904	912	5	3	33	24	M30	13	8
900	1095	1030	990	919	914.4	30	56	956	964	5	3	33	24	M30	13	8
1000	1195	1130	1090	1021	1016	32	60	1058	1066	5	3	33	28	M30	14	9
*(1100)	1305	1240	1200	1123	1117.6	32	–	–	–	–	3	33	28	M30
*1200	1420	1350	1305	1225	1219.2	34	–	–	–	–	3	33	32	M30
*1350	1575	1505	1460	–	1371.6	34	–	–	–	–	3	33	32	M30
*1500	1730	1660	1615	–	1524	36	–	–	–	–	3	33	36

Dimensions of JIS B2220 10K flange standard

PN 10K. Dimensions in mm.

Nominal Dia. of Flange	Outside Dia. of Flange D	Sectional Dimensions of flange												Nominal Bolt Size	Welding
		Dia. of Bolt Circle C	Dia. Of raised Face g	Inside Dia.     Of Flange do	Outside Dia. Of Applicable pipe	t	T	Dia. of Hub		Radius r	Raised Face f	Hole Dia. H	Number of Bolt Holes
								a	b						W1	W2
10	90	65	46	17.8	17.3	12	–	–	–	–	1	15	4	M12	5	2.5
15	95	70	51	22.2	21.7	12	–	–	–	–	1	15	4	M12	5	3
20	100	75	56	27.7	27.2	14	–	–	–	–	1	15	4	M12	5	3
25	125	90	67	34.5	34	14	–	–	–	–	1	19	4	M16	5	3
32	135	100	76	43.2	42.7	16	–	–	–	–	2	19	4	M16	6	3
40	140	105	81	49.1	48.6	16	–	–	–	–	2	19	4	M16	6	3
50	155	120	96	61.1	60.5	16	–	–	–	–	2	19	4	M16	6	3
65	175	140	116	77.1	76.3	18	–	–	–	–	2	19	4	M16	6.5	4
80	185	150	126	90	89.1	18	–	–	–	–	2	19	8	M16	6.5	4
-90	195	160	136	102.6	101.6	18	–	–	–	–	2	19	8	M16	6.5	4
100	210	175	151	115.4	114.3	18	–	–	–	–	2	19	8	M16	7	4
125	250	210	182	141.2	139.8	20	–	–	–	–	2	23	8	M20	7.5	4
150	280	240	212	166.6	165.2	22	–	–	–	–	2	23	8	M20	8	5
-175	305	265	237	192.1	190.7	22	–	–	–	–	2	23	12	M20	9	5
200	330	290	262	218	216.3	22	–	–	–	–	2	23	12	M20	9	6
-255	350	310	282	243.7	241.8	22	–	–	–	–	2	23	12	M20	9	6
250	400	355	324	269.5	267.4	24	36	288	292	6	2	25	12	M22	10	6
300	445	400	368	321	318.5	24	38	340	346	6	3	25	16	M22	10	6
350	490	445	413	358.1	355.6	26	42	380	386	6	3	25	16	M22	12	7
400	560	510	475	409	406.4	28	44	436	442	6	3	27	16	M24	12	7
450	620	565	530	460	457.2	30	48	496	502	6	3	27	20	M24	14	8
500	675	620	585	511	508	30	48	548	554	6	3	27	20	M24	14	8
550	745	680	640	562	558.8	32	52	604	610	6	3	33	20	M30	15	9
600	795	730	690	613	609.6	32	52	656	662	6	3	33	24	M30	16	10
650	845	780	740	664	660.4	34	56	706	712	6	3	33	24	M30	16	10
700	905	840	800	715	711.2	34	58	762	770	6	3	33	24	M30	17	10
750	970	900	855	766	762	36	62	816	824	6	3	33	24	M30	18	11
800	1020	950	905	817	812.8	36	64	868	876	6	3	33	28	M30	19	12
-850	1070	1000	955	868	863.6	36	66	920	928	6	3	33	28	M30	19	12
900	1120	1050	1005	919	914.4	38	70	971	979	6	3	33	28	M30	22	14
1000	1235	1160	1110	1021	1016	40	74	1073	1081	6	3	39	28	M36	22	14
*(1100)	1345	1270	1220	1123	1117.6	42	–	–	–	–	3	39	28	M36
*1200	1465	1380	1325	1225	1219.2	44	–	–	–	–	3	39	32	M36
*1350	1630	1540	1480	–	1371.6	48	–	–	–	–	3	45	36	M42
*1500	1795	1700	1635	–	1524

Dimensions of JIS B2220 16K flange standard

PN 16K. Dimensions in mm.

Nominal Dia. of Flange	Outside Dia. of Flange D	Sectional Dimensions of flange												Nominal Bolt Size
		Dia. of Bolt Circle C	Dia. Of raised Face g	Inside Dia.Of Flange do	Outside Dia. Of Applicable pipe	t	T	Dia. of Hub		Radius r	Raised Face f	Hole Dia. H	Number of Bolt Holes
								a	b
10	90	65	46	17.8	17.3	12	16	26	28	4	1	15	4	M12
15	95	70	51	22.2	21.7	12	16	30	32	4	1	15	4	M12
20	100	75	56	27.7	27..2	14	20	38	42	4	1	15	4	M12
25	125	90	67	34.5	34	14	20	46	50	4	1	19	4	M16
32	135	100	76	43.2	42.7	16	22	56	60	5	2	19	4	M16
40	140	105	81	49.1	48.6	16	24	62	66	5	2	19	4	M16
50	155	120	96	61.1	60.5	16	24	76	80	5	2	19	8	M16
65	175	140	116	77.1	76.3	18	26	94	98	5	2	19	8	M16
80	200	160	132	90	89.1	20	28	108	112	6	2	23	8	M20
-90	210	170	145	102.6	101.6	20	30	120	124	6	2	23	8	M20
100	225	185	160	115.4	114.3	22	34	134	138	6	2	23	8	M20
125	270	225	195	141.2	139.8	22	34	164	170	6	2	25	8	M22
150	305	260	230	166.6	165.2	24	38	196	202	6	2	25	12	M22
200	350	305	275	218	216.3	26	40	244	252	6	2	25	12	M22
250	430	380	345	269.5	267.4	28	44	304	312	6	2	27	12	M24
300	480	430	395	321	318.5	30	48	354	364	8	3	27	16	M24
350	540	480	440	358.1	355.6	34	52	398	408	8	3	33	16	M30X3
400	605	540	495	409	406.4	38	60	446	456	10	3	33	16	M30X3
450	675	605	560	460	457.2	40	64	504	514	10	3	33	20	M30X3
500	730	660	615	511	508	42	68	558	568	10	3	33	20	M30X3
-550	795	720	670	562	558.8	44	70	612	622	10	3	39	20	M36X3
600	845	770	720	613	609.6	46	74	666	676	10	3	39	24	M36X3
-650	895	820	770	664	660.4	48	77	704	726	10	5	39	24	M36X3
700	960	875	820	715	711.2	50	80	754	776	10	5	42	24	M39X3
-750	1020	935	880	766	762	52	83	806	832	10	5	42	24	M39X3
800	1085	990	930	817	812.8	54	86	865	885	10	5	48	24	M45X3
-850	1135	1040	980	868	863.6	56	89	916	936	10	5	48	24	M45X3
900	1185	1090	1030	919	914.4	58	93	968	986	10	5	48	28	M45X3
1000	1320	1210	1140	1021	1016	62	99	1070	1098	12	5	56	28	M52X3
-1100	1420	1310	1240	1123	1117.6	66	105	1180	1200	12	5	56	32	M52X3
1200	1530	1420	1350	1225	1219.2	70	112	1282	1302	12	5	56	32	M52X3

Dimensions of JIS B2220 20K flange standard

PN 20K. Dimensions in mm.

Nominal Dia. of Flange	Outside Dia. of Flange D	Sectional Dimensions of flange														Reference
		Dia. of Bolt Circle C	Dia. Of raised Face g	Inside Dia.     Of Flange do	Outside Dia. of Steel pipe	t	T	Dia. of Hub		Radius r	f	D	Number of Bolt Holes	Holes Dia. H	Nominal Bolt SIZE	S1	M	S2	N	L
								a	b
10	90	65	46	17.8	17.3	14	20	30	32	4	1	–	4	15	M12	27	4	27	4	–
15	95	70	51	22.2	21.7	14	20	34	36	4	1	–	4	15	M12	31	4	31	4	–
20	100	75	56	27.7	27.2	16	22	40	42	4	1	–	4	15	M12	37	4	37	4	–
25	125	90	67	34.5	34	16	24	48	50	4	1		4	19	M16	44	4	44	4.5	–
32	135	100	76	43.2	42.7	18	26	56	60	5	2	–	4	19	M16	52	4	53	5	–
40	140	105	81	49.1	48.6	18	26	62	66	5	2	–	4	19	M16	58	4	59	5.5	–
50	155	120	96	61.1	60.5	18	26	76	80	5	2	–	8	19	M16	70	4	72	5.5	–
65	175	140	116	77.7	76.3	20	30	100	104	5	2	65.9	8	19	M16	94	6	–	–	6
80	200	160	132	90	89.1	22	34	113	117	6	2	78.1	8	23	M20	107	6	–	–	6
-90	210	170	145	102.6	101.6	24	36	126	130	6	2	90.2	8	23	M20	120	6	–	–	6
100	225	185	160	115.4	114.3	24	36	138	142	6	2	102.3	8	23	M20	132	6	–	–	6
125	270	225	195	141.2	139.8	26	40	166	172	6	2	126.6	8	25	M22	160	7	–	–	6
150	305	260	230	166.6	165.2	28	42	196	202	6	2	151	12	25	M22	186	8	–	–	6
200	350	305	275	218	216.3	30	46	244	252	6	2	199.9	12	25	M22	237	9	–	–	6
250	430	380	345	269.5	267.4	34	52	304	312	6	2	248.8	12	27	M24	290	10	–	–	6
300	480	430	395	321	318.5	36	56	354	364	8	3	297.9	16	27	M24	345	11	–	–	6
350	540	480	440	358.1	355.6	40	62	398	408	8	3	333.4	16	33	M30X3	384	12	–	–	6
400	605	540	495	409	406.4	46	70	446	456	10	3	381	16	33	M30X3	437	13	–	–	7
450	675	605	560	460	457.2	48	78	504	514	10	3	431.8	20	33	M30X3	490	15	–	–	7
500	730	660	615	511	508	50	84	558	568	10	3	482.6	20	33	M30X3	544	16	–	–	7
-550	795	720	670	562	558.8	52	90	612	622	10	3	533.4	20	39	M36X3	595	16	–	–	7
600	845	770	720	613	609.6	54	96	666	676	10	3	584.2	24	39	M36X3	646	18	–	–	7
*650	945	850	790	664	660.4	60					5		24	48	M45X3
*700	995	900	840	715	711.2	64					5		24	48	M45X3
*750	1080	970	900	766	762	68					5		24	56	M52X3
*800	1140	1030	960	817	812.8	72					5		24	56	M52X3
*850	1200	1090	1020	868	863.6	74					5		24	56	M52X3
*900	1250	1140	1070	919	914.4	76					5		28	56	M52X3

Dimensions of JIS B2220 30K slip on flange standard

PN 30K, SLIP ON FLANGE. Dimensions in mm.

Nominal Dia. of Flange	Outside Dia. of Flange D	Sectional Dimensions of flange														Reference
		Dia. of Bolt Circle C	Dia. Of raised Face g	Inside Dia.     Of Flange do	Outside Dia. of Steel pipe	t	T	Dia. of Hub		Radius r	f	D	Number of Bolt Holes	Holes Dia. H	Nominal Bolt SIZE	S1	M	S2	N	L
								a	b
10	110	75	52	17.8	17.3	16	24	30	34	4	1	–	4	19	M16	–	–	–	–	–
15	115	80	55	22.2	21.7	18	26	36	40	5	1	–	4	19	M16	31	4	40	5	–
20	120	85	60	27.7	27.2	18	28	42	46	5	1	–	4	19	M16	37	5	44	5	–
25	130	95	70	34.5	34	20	30	50	54	5	1	–	4	19	M16	55	6	52	5	–
32	140	105	80	43.2	42.7	22	32	60	64	6	2	–	4	19	M16	52	6	60	5	–
40	160	120	90	49.1	48.6	22	34	66	70	6	2	–	4	23	M20	58	6	66	5	–
50	165	130	105	61.1	60.5	22	36	82	86	6	2	–	8	19	M16	70	6.5	78	5	–
65	200	160	130	77.1	76.3	26	40	102	106	8	2	65.9	8	23	M20	96	9.5	94	5	6
80	210	170	140	90	89.1	28	44	115	21	8	2	78.1	8	23	M20	109	9.5	–	–	6
-90	230	185	150	102.6	101.6	30	46	128	134	8	2	90.2	8	25	M22	122	9.5	–	–	6
100	240	195	160	115.4	114.3	32	48	141	147	8	2	102.3	8	25	M22	135	9.5	–	–	6
125	275	230	195	141.2	139.8	36	54	166	172	8	2	126.6	8	25	M22	160	9.5	–	–	6
150	325	275	235	166.6	165.2	38	58	196	204	8	2	151	12	27	M24	186	9.5	–	–	6
200	370	320	280	218	216.3	42	64	248	256	8	2	199.9	12	27	M24	237	9.5	–	–	6
250	450	390	345	269.5	267.4	48	72	306	314	10	2	248.8	12	22	M30	290	10	–	–	6
300	515	450	405	321	318.5	52	78	360	370	10	3	297.9	16	33	M30	345	12	–	–	6
350	560	495	450	358.1	355.6	54	84	402	412	12	3	333.4	16	33	M30	383	13	–	–	6
400	630	560	510	409	406.4	60	92	456	468	15	3	381	16	39	M36

Dimensions Flat Face and Raised Face of JIS B2220 Flange Facing

Flange Facing. Dimensions in mm.

Nominal Dia. of Flange	Sectional Dimensions of Flange												Small Raised Facing
	5K		10K		16K		20K		30K		40K 63K
	g	f	g	f	g	f	g	f	g	f	g	f	g1	f1
10	39	1	46	1	46	1	46	1	52	1	52	1	35	1
15	44	1	51	1	51	1	51	1	55	1	55	1	42	1
20	49	1	56	1	56	1	56	1	60	1	60	1	50	1
25	59	1	67	1	67	1	67	1	70	1	70	1	60	1
32	70	2	76	2	76	2	76	2	80	2	80	2	68	2
40	75	2	81	2	81	2	81	2	90	2	80	2	75	2
50	85	2	96	2	96	2	96	2	105	2	105	2	90	2
65	110	2	116	2	116	2	116	2	130	2	130	2	105	2
80	121	2	126	2	132	2	132	2	140	2	140	2	120	2
90	131	2	136	2	145	2	145	2	150	2	150	2	130	2
100	141	2	151	2	160	2	160	2	160	2	165	2	145	2
125	176	2	182	2	195	2	195	2	195	2	200	2	170	2
150	206	2	212	2	230	2	230	2	235	2	240	2	205	2
175	232	2	237	2	–	–	–	–	–	–	–	–	–	–
200	252	2	262	2	275	2	275	2	280	2	290	2	260	2
225	277	2	282	2	–	–	–	–	–	–	–	–	–	–
250	317	2	324	2	345	2	345	2	345	2	355	2	315	2
300	360	3	368	3	395	3	395	3	405	3	410	3	375	3
350	403	3	413	3	440	3	440	3	450	3	455	3	415	3
400	463	3	475	3	495	3	495	3	510	3	515	3	465	3
450	523	3	530	3	560	3	560	3	–	–	–	–	–	–
500	573	3	585	3	615	3	615	3	–	–	–	–	–	–
550	630	3	640	3	670	3	670	3	–	–	–	–	–	–
600	380	3	690	3	720	3	720	3	–	–	–	–	–	–
650	735	3	740	3	770	5	790	5	–	–	–	–	–	–
700	785	3	800	3	820	5	840	5	–	–	–	–	–	–
750	840	3	855	3	880	5	900	5	–	–	–	–	–	–
800	890	3	905	3	930	5	960	5	–	–	–	–	–	–
850	940	3	955	3	980	5	1020	5	–	–	–	–	–	–
900	990	3	1005	3	1030	5	1070	5	–	–	–	–	–	–
1000	1090	3	1110	3	1140	5	–	–	–	–	–	–	–	–
1100	1200	3	1220	3	1240	5	–	–	–	–	–	–	–	–
1200	1305	3	1325	3	1350	5	–	–	–	–	–	–	–	–
1300	–	–	–	–	1450	5	–	–	–	–	–	–	–	–
1350	1460	3	1480	3	1510	5	–	–	–	–	–	–	–	–
1400	–	–	–	–	1560	5	–	–	–	–	–	–	–	–
1500	1615	3	1635	3	1670	5	–	–	–	–	–	–	–	–

Dimensions Tongue Face And Groove Face of JIS B2220 Flange Facing

Flange Facing Male & Female Type. Tongue & Groove Type. Dimensions in MM.

Nominal Dia of Flange	Male & Female Type				Tongue & Groove Type
	C3	C4	f3	f4	C1	C2	C3	C4	f3	f4
10	38	39	6	5	28	27	38	39	6	5
15	42	43	6	5	32	31	42	43	6	5
20	50	51	6	5	38	37	50	51	6	5
25	60	61	6	5	45	44	60	61	6	5
32	70	71	6	5	55	54	70	71	6	5
40	75	76	6	5	60	59	75	76	6	5
50	90	91	6	5	70	69	90	91	6	5
65	110	111	6	5	90	89	110	111	6	5
80	120	121	6	5	100	99	120	121	6	5
90	130	131	6	5	110	109	130	131	6	5
100	145	146	6	5	125	124	145	146	6	5
125	175	176	6	5	150	149	175	176	6	5
150	215	216	6	5	190	189	215	216	6	5
20	260	261	6	5	230	229	260	261	6	5
250	325	326	6	5	295	294	325	326	6	5
300	375	376	6	5	340	339	375	376	6	5
350	415	416	6	5	380	379	415	416	6	5
400	475	476	6	5	440	439	475	476	6	5

Dimensions Tolerance of JIS B2220 Pipe Flange

 

Flange tolerance. Dimensions in mm.

Flange Section		Surface Condition	Basic Size	Dimensional Tolerance
outside dia. D		as forged(1)	300 & below	+not specified -2
			over 300 thru 600
			over 600 thru 1000
			over 1000 thru 1500	+not specified -3
			over 1500
		finish	300 & below	1
			over 300 thru 600	1.5
			over 600 thru 1000	2
			over 1000 thru 1500	2.5
			over 1500	3
inside dia	solid flange d(2)	as forged(1)	16 & below	1
			over 16 thru 63	1.5
			over 63 thru 125	2
			over 125 thru 150	2.5
			over 250 thru 500	3
			over 500 thru 1000	4
			over 1000	5, 0
	slip-on flange do	finish	100 & below	+0.5, 0
			over 100 thru 400	+1, 0
			over 400 thru 600	+1.5, 0
			over 600 thru 800	+2.0, 0
			over 800 thru 1000	+2.5, 0
			over 1000	+3, 0
	welding neck flange d		100 & below	0, -0.5
			over 100 thru 400	0, -1
			over 400 thru 600	0, -1.5
			over 600 thru 800	0, -2
			over 800 thru 1000	0, -2.5
			over 1000	0, -3
bolt hole	bolt circle dia. c		250 & below	0.5
			over 250 thru 550	0.6
			over 550 thru 950	0.8
			over 950 thru 1350	1
			over 1350	1.5
Flange Section		Surface Condition	Basic Size	Dimensional Tolerance
			–	0.5
Dia. of hub	Slip-on flange (a) and welding neck flange(d 1)	As forged	220 & below	+2, 0
			over 220 thru 450	+3, 0
			over 450 thru 650	+4, 0
			over 650 thru 850	+6, 0
			over 850 thru 1000	+7, 0
			over 1000	+8, 0
		Finish	220 & below	+1, 0
			over 220 thru 450	+1.5, 0
			over 450 thru 650	+2, 0
			over 650 thru 850	+2.5, 0
			over 850 thru 1000	+3, 0
			over 1000	+3.5, 0
Gasket seat	c1,c2,c3, c4	Finish	500 & below	0.3
			over 500 thru 1000	0.35
			over1000 thru 1500	0.4
			over 1500	0.5
	f4f3	Finish	8 & below	0.2
			over 8	0.25
	g	Finish	200 & below	0.8
			over 200 thru 650	0.9
			over 650 thru 1000	1
			over 1000	1.2
Thickness t		One-side finish	20 & below	+1.5, 0
			over 20 thru 50	+2, 0
			over50 thru 100	+3, 0
		Bolt-side finish	20 & below	+1, 0
			over 20 thru 50	+1.5, 0
			over 50 thru 100	+2, 0
Hub Height T	Flange with Pipe Inserted	Finish	50 & below	1
			over 50 thru 100	1.5
			over 100 thru 200	2
	Flange with Bolt-welded Pipe	Finish	over 200 & below	+2, 0
			over 200 thru 300	+3, 0

Manufacturing process of JIS Flanges

JIS flanges are known for their high quality standards and durability. But how are JIS flanges manufactured? Here, we will take a look at the manufacturing process of JIS flanges. First, let’s start with the raw materials used to manufacture JIS flanges. These flanges are usually made from carbon steel, stainless steel or alloy steel. The raw material is cut to the desired size and shape using a cutting machine. Next, the raw material is heated to a high temperature in a furnace. This is done to make the material more pliable and easier to use. Once the material has reached the desired temperature, it is placed in a forging machine. The forging process involves forming the material into the desired shape using a series of dies. This is done under high pressure to ensure the flange has the required strength and durability. After the forging process, the flanges are allowed to cool before the machining process is carried out. During this process, the flanges are cut and shaped to the exact dimensions specified in the JIS standard. This is done using various machines, such as lathes and milling machines. Once the machining process is complete, the flanges are ready for quality testing. This includes checking for defects, measuring to ensure the flange meets the required dimensions, and pressure testing to ensure it can withstand the required pressure. Finally, the flanges are cleaned, painted or coated to protect them from corrosion. The flanges are then ready for packaging and shipping to the customer. In summary, the manufacturing process for JIS flanges involves several steps, including raw material selection, forging, machining, and quality testing. These steps ensure that the final product meets the high quality standards required by JIS specifications.

Manufacturing process of JIS forged flange

The forging process usually includes the following processes, i.e. selection of high quality billets, heating, forming and cooling.

• Raw material inspection – The key raw material used to produce flanges is billet or hot rolled bar stock. All raw materials purchased are supplied with test reports in accordance with British Standards with full traceability. This is the first mandatory step in the flange production process to ensure good quality. The raw materials are retested in-house to ensure chemical composition, mechanical properties and metallographic analysis.
• Cutting of raw materials – Correct and strict control of cutting sizes and proportions ensures full cost control.
• Heating – This is a very important step for the quality of the flanges. It is necessary to keep detailed records of heating temperatures to avoid overheating. Overheating can damage the structure of the metal and the mechanical properties of the raw material.
• Forging – The forging process is divided into free forging and die forging. The forging time and strength of flanges vary for different pressure classes.
• Heat treatment-The purpose of heat treatment is to eliminate the stress inside the flange and make the density more uniform. Careful recording of heat treatment temperature and cooling time is the key.
• Inspection of forging blanks – After the heat treatment process, select batch samples are tested again for chemical composition and mechanical properties to ensure that all items pass.
• Machining of forging blanks – During machining, inspection is performed along with machining to ensure that each part of the flange is qualified. Machining is performed on CNC and/or lathes.
• Finished Product Inspection – The finished product will be inspected 100% prior to delivery to ensure that the goods meet JIS, ASME, EN or customer standards.
• Documented Documentation – The entire production process and quality checks at different levels are documented according to JIS compliant standard operating procedures. This is the guarantee of good quality.
• Test certificates: As we are an JIS and PED certified manufacturer, we can issue test certificates for all goods upon delivery and inspection in accordance with British Standards.
• Packaging: All forgings and flanges are packed in wooden boxes or crates or pallets to ensure safe movement of the goods.

Production process of JIS casting flange

The production process of a JIS casting flange typically involves several steps, including the creation of a mold or pattern, the casting of the flange using molten metal, and various finishing and quality control steps. To begin the process, a mold or pattern is created using a material such as wood or metal. This mold or pattern will be used to create the shape of the flange, and will typically be made to precise specifications to ensure that the final product meets the desired dimensions and specifications. Once the mold or pattern is ready, the casting process can begin. This typically involves melting the metal that will be used to create the flange, such as iron or steel, and pouring the molten metal into the mold or pattern. The metal is then allowed to cool and solidify, taking on the shape of the mold or pattern. After the casting process is complete, the flange will typically undergo various finishing and quality control steps. This may include machining or grinding to achieve the desired dimensions and surface finish, as well as testing to ensure that the flange meets the required specifications and standards. Overall, the production process for a JIS casting flange is a highly precise and technical process that requires a thorough understanding of metallurgy, casting techniques, and quality control processes.

Manufacturing process of JIS plate cutting flange

The process here is relatively simple, and the key raw material is hot rolled plate. The process is mainly used to produce lower thickness sliding plate flanges and blind flanges. All plates purchased are accompanied by a test certificate to JIS Standards. The circles are cut from the plates. No heat treatment is involved in the flange manufacturing process. Drilling and machining is carried out on the circles to obtain the required dimensions. The goods are visually inspected and marked in accordance with the relevant standards.

Marking of JIS Flanges

JIS flanges are typically marked with the JIS symbol, the flange size, the pressure rating, and the material specification. The marking may also include the manufacturer’s name or trademark. Here is an example of how a JIS flange might be marked:

JIS 10K 40A SUS316L

This marking indicates that the flange is a JIS flange with a pressure rating of 10K, a size of 40A, and is made of SS400 material. SS400 is a type of steel specification. It is important to correctly identify the marking on a JIS flange in order to ensure that it is suitable for the intended application and that it is compatible with other components in the piping system.

Packing of JIS Flanges

The packaging of JIS flanges is an important step in the process of transporting and storing these important components. Proper packaging ensures that the JIS flanges arrive at their destination in good condition and ready for use. There are several key considerations to keep in mind when packing JIS flanges. First and most importantly, it is important to use the correct materials to protect the JIS flange during shipping. This may include the use of bubble wrap, foam board or other cushioning materials to prevent damage to the JIS flange during shipment. The size and type of packaging for JIS flanges is also important. If the JIS flange is too large for the package, it may be damaged during shipping. On the other hand, if the package is too large, it may be unnecessarily bulky and difficult to handle. In addition to using the correct materials and packaging, it is also important to properly mark JIS flanges. This helps ensure that they are handled and stored properly at their destination. This may include marking the JIS flange with its size, material and other important information. Finally, it is a good idea to secure the JIS flanges in their packaging to prevent them from moving during shipping. This can be accomplished using straps, tape, or other fastening methods. By following these simple guidelines, you can ensure that your JIS flanges are properly packaged and ready for shipping or storage. This helps prevent damage and ensures that the JIS flange is ready to use when it reaches its destination.

Inspection and measurement of JIS Flanges

JIS flanges should be inspected and measured to ensure that they meet the specified requirements and are suitable for their intended use. The following are some of the key points to consider when inspecting and measuring JIS flanges.

• Visual inspection: This includes checking the flanges for any visible defects or damage, such as cracks, distortion or surface defects.
• Dimensional inspection: This includes measuring the flanges to ensure they meet the specified dimensions such as diameter, thickness and bolt hole dimensions.
• Pressure and temperature ratings: The pressure and temperature ratings of the flanges should be checked to ensure that they are suitable for the intended application.
• Material verification: The material of the flange shall be verified to ensure that it meets the required specifications.
• Surface finish: The surface finish of the flange shall be checked to ensure that it meets the required specifications and is suitable for the intended application.

  When inspecting and measuring JIS flanges, it is important to follow the manufacturer’s instructions and industry standards to ensure that they are safe and suitable for their intended use.  

Installation of JIS Flanges

Do you want to install a JIS flange in your system? If you are new to JIS flanges, the installation process can be intimidating at first. However, with the right tools and knowledge, you can easily install these flanges and have your system up and running in no time. To begin the installation process, you will need to gather all the necessary tools and materials. This includes a pipe wrench, a hammer and a set of JIS flange gaskets. You will also need to make sure the flanges for your piping system are the correct size. Once you have everything you need, you can begin the installation process. First, locate the area where the flange is to be installed. Be sure that the area is clean and free of debris, as any dirt or debris can cause problems with the installation process. Next, align the flange gasket with the flange, making sure it is centered and properly seated. Then, use a pipe wrench and hammer to attach the flange to the piping system. Make sure the flanges are tight, but be careful not to over-tighten them or you could damage them. Finally, test the flange to make sure it is properly installed and working properly. You can do this by opening the system and checking for any leaks or problems. If everything looks good, you’re all set! Installing a JIS flange can be daunting at first, but with the right tools and knowledge, it can be a simple process. By following these steps, you can get your system up and running easily with these high-quality flanges.  
 

Application of JIS Flanges

JIS flanges are an important component in the construction and maintenance of pipes, valves and other piping systems. They are used to connect pipes and other equipment and provide leak-proof seals at the point of connection. In this blog post, we will explore the various applications of JIS flanges in different industries and how they contribute to the smooth operation of various systems. One of the main industries that use JIS flanges is the oil and gas industry. In this industry, JIS flanges are used to connect pipelines and other equipment used in oil and gas drilling, refining and transportation. These flanges are designed to withstand high pressures and temperatures, making them ideal for use in this industry. JIS flanges are also widely used in the chemical and petrochemical industries. In these industries, JIS flanges are used to connect pipelines and equipment that carry corrosive and hazardous chemicals. the high corrosion resistance of JIS flanges makes them suitable for these industries and helps prevent leaks and spills of potentially hazardous chemicals. In the power generation industry, JIS flanges are used in the construction and maintenance of power plants, including nuclear, fossil fuel and renewable energy plants. They are used to connect piping and equipment that carry steam, water and other fluids critical to the operation of these plants. In addition to these industries, JIS flanges are also used in the water and wastewater treatment industries. In these industries, JIS flanges are used to connect pipes and equipment that carry water, sewage and other wastes. the high corrosion resistance of JIS flanges makes them suitable for use in these environments and helps prevent leaks and spills that can cause environmental damage. In short, JIS flanges are important components in a wide range of industries and applications. They are used to connect piping and equipment and provide leak-proof seals that help ensure the smooth operation of various systems. If your piping system requires JIS flanges, be sure to choose a reputable supplier with a proven track record of providing high-quality flanges that meet your specific needs.

What are the differences between a flat face and raised face flanges?

 

FF is a full face flange and RF is a flange with sealing surface steps. FF surface is generally used for flanges with low pressure, or the sealing surface needs to be pasted with stainless steel lining ring sealing surface to play the role of corrosion resistance. RF is raised face flange and can be used for PN1.6 – PN10MPA. The FF is flat, the sealing is not as good as RF, the pressure is 1.6 – 2.0MPA, and other forms such as RTJ and FM use higher pressure. The gasket of RF FF can be universal.

What is the difference between the sealing surface effect of FF flange and RF flange?

FF flange general pressure are relatively small, not more than PN1.6MPa, FF flange because the sealing contact area is too large, more than the effective sealing surface range of the part is too much, inevitably have bad contact sealing surface, so the sealing effect is not good; RF raised face surface flange sealing surface contact surface area is small, and the effective sealing surface range before the role, so the sealing effect is better than the full plane flange.

The difference between the raised face flange and male/female male face flange and use?

In flange connection, Male face flange shall be matched with Female Male face flange, commonly known as male and female, while raised face flange shall be matched with raised face flange. In general, raised face flange should also be a kind of flat flange, which is designated as RF, and RF face can only be linked with RF face. The code of Male face flange is M, and the M face flange needs to be connected with FM face. One is FM (Female Male), and the other is a pair of M (Male). The compression of M/FM surface is better than that of RF surface. Raised face flange and raised face flange are used together, and the code is RF. The comparison chart is as follows:

The angle between the sealing surface of raised face flange and the flange bolt connection surface is 45 °, and the angle between the sealing surface of Female Male face flange and Male flange and the flange bolt connection surface is 90 °, that is, the two sides are vertical. Raised face flanges are widely used in the market, and there is no problem when the pressure is below 2.5MPa. The price of Male/Female Male (MFM) face flanges is higher and the sealing effect is better, so the applicable pressure rating is relatively high. It is troublesome to design. For example, when the equipment condition diagram is provided, it is necessary to indicate what type of flange it is. Then, when the nozzle material is counted, it is another kind of matching flange.

How to purchase the correct JIS flanges?

Purchasing the correct JIS flange for your business or project can be a daunting task. Many factors need to be considered, including size, material and pressure rating. We will go over the steps you need to take to ensure you get the correct JIS flange for your needs. Step 1: Determine the size of the required JIS flange. The size of the JIS flange required will depend on the size of the pipe or fitting being connected. Make sure to measure the diameter and thickness of the pipe to ensure that you get the correct size flange. Step 2: Select the material of the JIS flange. JIS flanges are available in a variety of materials, including carbon steel, stainless steel and cast iron. The material you choose will depend on the application and the specific requirements of the project. Step 3: Consider the pressure rating of the JIS flange. The pressure rating of a flange is the maximum pressure it can safely withstand. Make sure to select a flange with the right pressure rating for your application. Step 4: Determine the type of JIS flange required. There are several different types of JIS flanges, including sliding flanges, butt-weld flanges, and threaded flanges. Each type has its own unique features and benefits, so make sure you choose the type that best suits your project. Step 5: Find a reputable supplier. Once you know the size, material, pressure rating and type of JIS flange you need, it’s time to find a reputable supplier. Look for a supplier that has a proven track record and a large selection of JIS flanges to choose from. By following these steps, you can be sure that you are buying the right JIS flange for your needs.

How to select JIS flanges manufacturer?

Are you in the market for JIS flanges? If so, you know that finding a reliable manufacturer is the key to getting the quality products your business needs. But with so many choices, how do you choose the right one? Here are some tips to help you choose the best JIS flange manufacturer. Look for a reputable manufacturer: It is important to choose a manufacturer with a proven track record of producing high quality JIS flanges. Look for a company that has a good reputation in the industry and read reviews from other customers to get an idea of their reliability and product quality. Consider their experience: Experience is critical in flange manufacturing. Look for a manufacturer that has been in business for some time and has extensive experience producing JIS flanges. This will give you peace of mind that they have the knowledge and expertise to produce top quality products. Check their certifications: Make sure the manufacturer you choose has the necessary certifications and accreditations. This will ensure that their products meet industry standards and are safe to use. Evaluate what they offer: It is important to choose a manufacturer that offers a variety of JIS flanges to meet your specific needs. Look for a company that can take custom orders and has the ability to produce the flanges you need. Consider their customer service: Good customer service is critical when working with a manufacturer. Look for a company that is responsive and helpful, and can provide prompt support if you have any problems or questions. By following these tips, you can choose a JIS flange manufacturer that is reliable, experienced, and able to meet your specific needs. Do your research, take the time to find the right product for your business, and you’ll be well on your way to getting the high-quality JIS flanges you need.

Export Country For JIS Flanges

MIDDLE EAST	AFRICA	NORTH AMERICA	EUROPE	ASIA	SOUTH AMERICA
Saudi Arabia	Nigeria	Usa	Russia	India	Argentina
Iran	Algeria	Canada	Norway	Singapore	Bolivia
Iraq	Angola	Mexico	Germany	Malaysia	Brazil
Uae	South Africa	Panama	France	Indonesia	Chile
Qatar	Libya	Costa Rica	Italy	Thailand	Venezuela
Bahrain	Egypt	Puerto Rica	Uk	Vietnam	Colombia
Oman	Sudan	Trinidad And Tobago	Spain	South Korea	Ecuador
Kuwait	Equatorial Guinea	Jamaica	Ukraine	Japan	Guyana
Turkey	The Republic Of Congo	Bahamas	Netherland	Sri Lanka	Paraguay
Yemen	Gabon	Denmark	Belgium	Maldives	Uruguay
Syria			Greece	Bangladesh
Jordan			Czech Republic	Mayanmar
Cyprus			Portugal	Taiwan
			Hungary	Cambodia
			Albania
			Austria
			Switzerland
			Slovakia
			Finland
			Ireland
			Croatia
			Slovenia
			Malta