Weldoflanges

Understanding your choice of weldoflanges options

When it comes to choosing the right weldoflanges for your pipeline system, there are a variety of options available. It’s important to understand the different types of weldoflanges and their features to make an informed decision for your specific needs.
At Jihua, we provide some basic information on weldoflanges, but we believe that we can offer a more comprehensive guide to help you make the best choice. Our team of experts has extensive experience in the industry and can provide valuable insights to assist you in making an informed decision.

What are weldoflanges?

The weldoflange combines a welded neck flange and a so-called weldolet. On the main pipe side, the weldoflange is designed like a weldolet. This means that the branch connection on the main pipe side is a welded connection. It has a flange connection. Weldo flange connections can be designed according to customer requirements (DIN or ANSI). It is used to connect reinforcement fittings. It replaces the traditional connection. The body of the weldoflange is made of high-quality forging.

Weldoflanges are mainly used for welding because they provide a strong seal between two pipes.
How to welding a weldoflange correctly?
There are several steps to consider when properly welding weldoflange. First, you need to make sure that both surfaces of the tubing are properly cleaned before you begin welding, so there is no debris or dirt on the surface that could interfere with the welding process. Secondly, you need to use the correct type of filler metal when welding the weldoflange; this should be determined by the materials being welded together, as different metals require different filler metals for the best results. Finally, you also need to make sure that you are applying the right amount of heat to the process so that your joint will be strong when it is finished.
Weldoflanges are also commonly used in cooling towers, water systems, gas pipelines, fire sprinkler systems, chemical plants, power plants, piping systems, mining operations, etc.

• In cooling towers and water systems, weldoflanges connect pipes and equipment to circulate water or other cooling fluids. In gas pipelines, flanges connect pipeline sections and allow for easy maintenance and repair.
• In fire sprinkler systems, weldoflanges connect pipes and valves that distribute water for fire suppression.
• In chemical plants, weldoflanges connect pipes and valves that handle various chemicals and corrosive materials.
• In power plants, weldoflanges are used in various applications such as steam, water, fuel, and exhaust systems.
• In mining operations, weldoflanges connect pipes and equipment for transporting water, slurry, and other materials.

Quality Standard for Weldoflanges

There are several standards that specify the specifications of weldoflange, including BS-4504, EN1092-1 and DIN-2527. BS-4504 weldoflange is an earlier specification, which is now covered by EN1092-1. This standard specifies a series of steel flanges of size and pressure class, including the requirements for weldoflange. DIN-2527 weldoflange is a standard widely used in various environments, with various materials available.
Class 150 LBS weldoflange can withstand pressure up to 285psi, and there are different materials to choose from, such as the highly corrosion-resistant standard MSS-SP-44 weldoflange. The size of ANSI 150 weldoflange can vary, and customers can choose the appropriate size according to their specific application.
The change of ASME B16.47 weldoflange is usually used for air pollution control and scrubber, which requires the use of flange capable of withstanding high temperature and harsh chemical environment. The change of these weldoflanges is to meet the specific requirements of these applications.

Materials of Weldoflanges

Depending on the specific application requirements, weldoflanges are made from a variety of metal materials, including:

Titanium Weldoflange	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 Weldoflange	T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, 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
Copper Nickel Weldoflange	ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Carbon Steel Weldoflange	ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Stainless Steel Weldoflange	ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Alloy Steel Weldoflange	ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Hastelloy Weldoflange	ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X
Brass Weldoflange	3602 / 2604 / H59 / H62 / etc.
Inconel Weldoflange	ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750
Monel Weldoflange	ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Duplex Weldoflange	S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex Weldoflange	S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Alloy 20 Weldoflange	ASTM B462 / ASME SB462, Carpenter 20 Alloy, Alloy 20Cb-3
Aluminium Weldoflange	5052 /6061/ 6063 / 2017 / 7075 / etc.
Nickel Weldoflange	ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Nimonic Weldoflange	Nimonic 75, Nimonic 80A, Nimonic 90
Other Weldoflange material	Tin bronze, Alumunum bronze, Lead bronze
Incoloy Weldoflange	ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925
254 Smo Weldoflange	ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547

Sizes for Weldoflanges

Weldoflange sizes can vary depending on the specific application and requirements, but some common sizes include:

1/2″ x 2″ weldoflange
3/4″ x 2″ weldoflange
1″ x 2″ weldoflange
1 1/2″ x 2″ weldoflange
2″ x 3″ weldoflange
3″ x 4″ weldoflange
4″ x 6″ weldoflange

The size and specifications of a weldoflange should always be carefully considered to ensure that it can effectively and safely handle the specific requirements of the application. In addition to material, pressure rating, and temperature rating, other important factors to consider may include corrosion resistance, chemical compatibility, and the type of fluid or gas being transported.

Dimensions of Weldoflanges

weldoflanges are available in various dimensions and pressure ratings. The flange dimensions are typically specified by the nominal pipe size (NPS), flange facing type, and pressure class. Common NPS sizes for weldoflanges range from DN 15 to DN 200. The facing types can be flat face, raised face, or RTJ (ring type joint). The dimensions and tolerances for weldoflanges are specified in the standard.

Dimensions of weldoflange & weldoflange accordance with ASME B16.5

Weldo / Nipo Flange Dimensions Branch ½”

Branch ¾” Weldo / Nipo Flange Dimensions

Weldo Flange Dimensions Branch 1”

Nipo Flange Dimensions Branch 1½”

Weldo / Nipo Flange Dimensions Branch 2″

Weldo Flange Dimensions Branch 3”

Nipo Flange Dimensions Branch 4″

Weldo / Nipo Flange Dimensions Branch 6″

RATING	NOMINAL PIPE SIZE FROM 8″ TO 36″
	Bore schedule	Length	D	E	Weight [kg]
150#	10-STD	150			23,5
	XS-80	170	279	25,4	25
	160-XXS	195			27
	Bore schedule	Length	D	E	Weight [kg]
300#	10-STD	160			36,6
	XS-80	175	318	36,6	37,5
	160-XXS	205			39
	Bore schedule	Length	D	E	Weight [kg]
600#	10-STD	185			49,5
	XS-80	200	356	54,1	51
	160-XXS	230			53,2
	Bore schedule	Length	D	E	Weight [kg]
900#	10-STD	210			62,5
	XS-80	225	381	62	64,3
	160-XXS	250			66
	Bore schedule	Length	D	E	Weight [kg]
1500#	10-STD	240			87,5
	XS-80	255	394	88,9	89
	160-XXS	285			91,2
	Bore schedule	Length	D	E	Weight [kg]
2500#	10-STD	340			186
	XS-80	360	483	114,3	189
	160-XXS	385			192,5

Dimensions Tolerance of Weldoflange 

Outside Diameter:	Inside Diameter:
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm	Not applicable
Diameter of Contact Face:	Outside Diameter of Hub:
1.6 mm Raised Face = ± 0.8 mm6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm	≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore:	Drilling:
Not applicable	Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mmEccentricity of Bolt Circle with Respect to Facing≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness:	Length thru Hub:
≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0	≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm

Manufacturing process of Weldoflanges

Weldoflanges can be produced by forging, casting. We mainly produce flanges by forging, cutting and rolling processes.

Manufacturing process of Weldoflanges

The weldoflangess shall be forged steel.

• 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 VSM, ASME, EN or customer standards.
• Documented Documentation – The entire production process and quality checks at different levels are documented according to VSM compliant standard operating procedures. This is the guarantee of good quality.
• Test certificates: As we are an VSM 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.

Marking of Weldoflanges

The marking of weldoflanges usually includes the following information:

• Manufacturer’s name or trademark.
• Material grade or specification, such as ASTM A105, A234 WPB, A182 F316, etc.
• Nominal pipe size (NPS) and schedule or wall thickness
• Type of weldoflange, such as Weldolet, Sockolet, Thredolet, etc.
• Branch or outlet size, which is the smaller size of the weldoflange
• Pressure rating or class, such as 150#, 300#, 600#, 900#, 1500#, etc.
• Heat number or batch number for traceability and quality control purposes.

The marking may also include additional information, such as the manufacturing standard, inspection certificate, and date of production. It is important to ensure that the weldoflange markings comply with the applicable codes and standards, and that they are clearly visible and legible for easy identification and traceability.

Packing of Weldoflanges

How to package weldoflanges? To pack the weldoflange, follow these steps:
When it comes to packaging weldoflanges, it’s important to ensure that they are properly protected and secured during transportation to prevent any damage. We will walk you through some of the key steps to follow when packaging weldoflanges.
Step 1: Clean and Inspect the Flanges
Before packaging the flanges, it’s essential to clean them thoroughly to remove any dust, dirt, or debris that may have accumulated on them. You can use a cloth or brush to clean the flanges and inspect them to ensure they are free from any defects or damages.
Step 2: Choose the Right Packaging Material
The packaging material you choose should be sturdy and able to provide adequate protection to the flanges during transportation. Ideally, you should use a strong cardboard box or wooden crate that can withstand the weight and size of the flanges.
Step 3: Secure the Flanges
Once you have the packaging material ready, you need to secure the flanges to prevent them from moving around or getting damaged during transit. You can use bubble wrap, foam, or any other suitable cushioning material to protect the flanges from impact or shock.
Step 4: Label the Package
Labeling the package correctly is crucial to ensure that it reaches the intended destination without any confusion. You should clearly label the package with the recipient’s address, contact information, and any other necessary details.
Step 5: Arrange for Shipping
After the package is fully prepared and labeled, it’s time to arrange for shipping. You can use a reliable courier or shipping company to ensure that the package is delivered on time and in good condition.
Packaging weldoflanges requires careful planning and attention to detail. By following the above steps, you can ensure that your flanges are properly protected and arrive at their destination safely. Remember to use high-quality packaging materials, secure the flanges properly, and label the package accurately to avoid any mishaps during transportation.

Inspection and measurement of Weldoflanges

There are several factors that need to be considered when inspecting and measuring weldoflanges, including:

Material
The first thing to inspect in a weldoflange is the material. The standard specifies that the flanges should be made from materials such as carbon steel, stainless steel, or alloy steel. The material should be free from any defects such as cracks, porosity, or inclusions that can affect the integrity of the flange.
Dimension
The next thing to inspect in a weldoflange is its dimension. The standard specifies the dimensions of the flanges based on their nominal size and pressure rating. The flanges should be inspected for their inside and outside diameter, thickness, and overall dimensions to ensure they meet the requirements of the standard.
Surface Finish
The surface finish of a flange is also important. The standard specifies that the flanges should have a smooth and even surface finish to ensure proper sealing of the gasket. Any roughness or irregularities on the surface of the flange can lead to leaks in the piping system.
Bolt Hole Alignment
The bolt holes in a flange should be aligned properly to ensure the bolts can be inserted and tightened correctly. The bolt holes should be inspected to ensure they are in the correct position and are not misaligned.
Bolt Hole Size
The size of the bolt holes is also important. The standard specifies the size of the bolt holes based on the nominal size and pressure rating of the flange. The bolt holes should be inspected to ensure they are the correct size and are not damaged.
Bolt Hole Thread
The threads in the bolt holes are important to ensure the bolts can be screwed in and tightened properly. The threads should be inspected to ensure they are clean and free from any damage or defects.

To inspect and measure weldoflanges, you will need a set of calipers or a micrometer to accurately measure the dimensions of the flange. It is also a good idea to have a torque wrench on hand to ensure that the bolts are tightened to the correct torque specification.

Application of Weldoflanges

Weldoflanges are known to deliver exceptional performance and are generally developed for meeting the demands. These Weldoflange is use in various industries like:

• Weldoflange uses in Oil and Gas Pipeline;
• Weldoflange uses in Chemical Industry;
• Weldoflange uses in Plumbing;
• Weldoflange uses in Heating;
• Weldoflange uses in Water Supply Systems;
• Weldoflange uses in Power Plant;
• Weldoflange uses in Paper & Pulp Industry;
• Weldoflange uses in General Purpose Applications;
• Steel Weldoflange uses in Fabrication Industry;
• Weldoflange uses in Food Processing Industry;
• Weldoflange uses in Structural Pipe.

How to purchase the correct weldoflanges?

Are you in the market for weldoflanges but don’t know where to start? Don’t worry, you’re not alone. With so many options available, it can be overwhelming to choose the right flanges for your project. We’ll go over some key factors to consider when purchasing weldoflanges to ensure that you make the right decision.
Determine the Material Needed
The first step to purchasing the correct weldoflanges is to determine the material you need. These flanges are available in a variety of materials, including carbon steel, stainless steel, and alloy steel. The choice of material will depend on the specific application and environmental conditions. If you’re unsure which material to choose, consult with a qualified engineer or supplier to help guide you in making the right decision.
Identify the Flange Face Type
Flange face types refer to the surface finish of a flange, and there are many different types of flange face finishes, including flat face (FF), raised face (RF), ring-type joint (RTJ), tongue and groove (T&G), male and female face (M&F). Each type of flange face has its unique characteristics and is suitable for different applications.

• Flat face (FF): This type of flange face has a flat, smooth surface that is perpendicular to the axis of the pipe. It is typically used for low-pressure applications and when the sealing is achieved by a gasket.
• Raised face (RF): This type of flange face has a raised ring on the surface that surrounds the bolt holes. The ring provides a surface for the gasket to rest on, which helps to create a better seal. It is commonly used in applications with moderate pressure.
• Ring joint face (RTJ): This type of flange face has a specially designed groove to accommodate a metallic ring gasket. The groove is cut into the surface of the flange, and the gasket sits in the groove to create a tight seal. This type of flange face is typically used in high-pressure applications.
• Tongue and groove face (T&G): This type of flange face has a raised tongue on one flange and a matching groove on the other flange. The tongue fits into the groove, creating a tight seal without the need for a gasket. This type of flange face is often used in applications where high pressure and temperature are involved.
• Male and Female Face (M&F): This type of flange face is similar to the tongue and groove face. However, it has a male and female end which creates a face to face contact between two flanges. This type of flange is mainly used for low pressure and low temperature applications.

To identify a specific flange face type, you need to provide me with more information, such as the flange’s application, dimensions, and material.
Determine the Weldoflange Size and Pressure Class
Once you have identified the material and weldoflange type, the next step is to determine the size and pressure class of the weldoflange. weldoflanges are available in various sizes and pressure ratings, and it’s crucial to select the correct size and pressure class to ensure that the flange can withstand the intended operating conditions. You should consult the system specifications and design to determine the appropriate size and pressure class.
Look for Quality and Certifications
It’s essential to ensure that the weldoflanges you purchase are of high quality and come with the necessary certifications. Look for suppliers that have a reputation for delivering high-quality products, and check for relevant certifications, such as ISO 9001, API, and CE, to ensure that the flanges meet industry standards.
Consider the Price
While the price should not be the only factor to consider when purchasing weldoflanges, it’s important to compare prices from different suppliers to ensure that you’re getting a fair price. However, remember that the cheapest option may not always be the best quality, so ensure that you’re not compromising on quality in pursuit of lower costs.
Purchasing the correct weldoflanges can be challenging, but by considering the factors outlined in this post, you can ensure that you make an informed decision that meets your project requirements. Remember to consult with experts and compare suppliers to ensure that you’re getting a high-quality product at a fair price.

How to select weldoflanges manufacturer?

Selecting the right manufacturer for weldoflanges can be a daunting task. With so many options available, it’s easy to get overwhelmed and make the wrong choice. However, choosing the right manufacturer is critical to ensure that you get the best quality flanges that meet your specific needs. We provide some tips to help you select the right weldoflanges manufacturer.
Quality of Products
The first factor to consider when selecting a weldoflanges manufacturer is the quality of their products. You should look for a manufacturer that uses high-quality materials and follows strict quality control processes to ensure that their products meet the required standards.
Industry Experience
Another factor to consider is the manufacturer’s industry experience. Look for a manufacturer that has been in the industry for a significant period and has a proven track record of delivering high-quality products to their customers. An experienced manufacturer will have a better understanding of the market and the needs of their customers.
Production Capacity
It is also essential to consider the production capacity of the manufacturer. You should look for a manufacturer that has the capacity to produce the required quantity of flanges in a timely manner to meet your project’s needs.
Pricing
Pricing is another crucial factor to consider when selecting a weldoflanges manufacturer. While it is essential to look for a manufacturer that offers competitive pricing, it is equally important to consider the quality of their products. Don’t compromise on the quality of the products for the sake of saving a few dollars.
Customer Service
The final factor to consider is the manufacturer’s customer service. Look for a manufacturer that has excellent customer service and is willing to assist you with any queries or concerns you may have. A manufacturer that values their customers will provide a better overall experience.

Choosing the right weldoflanges manufacturer is essential to ensure you get high-quality products that meet your needs. Look for a manufacturer with quality certifications, experience, a good reputation, customization capabilities, and a competitive price. By following these tips, you will be able to find the right manufacturer for your flange needs.

Why Choose Jihua to Be Your Weldoflange Supplier?

Jihua is a well-established and reputable manufacturer and supplier of weldoflanges that has been providing high-quality products to customers worldwide for many years. Here are some reasons why you might choose Jihua to be your weldoflange supplier:

• High-quality products: Jihua is committed to providing high-quality weldoflanges made from the best materials and manufactured to the highest standards. The company has strict quality control procedures in place to ensure that each product meets or exceeds customer expectations.
• Competitive pricing: Jihua offers competitive pricing on its products, which means you can get high-quality weldoflanges at an affordable price.
• Wide range of products: Jihua offers a wide range of weldoflanges, including ANSI, DIN, JIS, EN, and other international standards. This means you can find the right product to meet your specific needs.
• Excellent customer service: Jihua is committed to providing excellent customer service and support to all of its customers. The company has a team of experienced professionals who are available to answer any questions or concerns you may have.
• Fast delivery: Jihua understands the importance of timely delivery and works hard to ensure that all orders are shipped out quickly and efficiently.

Jihua is a reliable and trustworthy supplier of weldoflanges that can meet your needs and exceed your expectations.

Export Country For Weldoflanges

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