VSM Flanges

Understanding your choice of VSM flanges options

Selecting the correct VSM flange is essential to ensure optimum performance and safety. Factors such as flange face type, size, and material should be considered when selecting a flange for a specific application. Knowing these options helps to make an informed decision that meets the requirements of a given application.

What are VSM flanges?

SWISS VSM flanges are a type of high-quality flange that are designed to withstand the most challenging conditions. These flanges are known for their precision engineering and exceptional durability. They are popular in various industries, including petrochemical, oil and gas, and power generation.
What is the SWISS VSM flange standard? In a nutshell, it’s a set of guidelines and specifications for designing and manufacturing flanges that meet certain quality and safety standards. The Swiss Association for Standardization (SNV) developed the prototype with various industry experts and organizations.
The SWISS VSM flange standard is unique in that it focuses on the physical dimensions and material properties of flanges and their performance under various operating conditions. For example, the standard includes specific requirements for how flanges must withstand high pressure and temperature, corrosion, and other environmental factors.
Why is the SWISS VSM flange standard important? For one, it helps ensure that flanges are designed and manufactured to a consistent level of quality and safety. This is especially crucial in industries where even a small defect or failure, such as the oil and gas industry, can have serious consequences.
Additionally, the SWISS VSM flange standard helps streamline the design and manufacturing process for flanges by providing clear guidelines for engineers and manufacturers to follow. This can help reduce costs and improve efficiency while maintaining a high-quality level.
The SWISS VSM flange standard is an important set of guidelines for designing and manufacturing flanges that meet certain quality and safety standards. Whether you’re an engineer or construction professional, understanding the SWISS VSM flange standard can help ensure that the components you work with are reliable, safe, and effective.

What are the different types of VSM flanges?

Flanges come in many different types and styles, but some common types of VSM flanges include:

Types of VSM flanges

As industries continue to grow, the demand for various flanges increases. Flanges are essential components in piping systems as they allow for easy connection and disconnection of pipes. We will discuss the three main types of VSM flanges: Weld Neck Flanges, Flat Flanges, and Blind Flanges.
Weld Neck Flanges
Weld Neck Flanges are the most commonly used type of VSM flanges. They are designed to be welded to the end of a pipe, providing a strong and durable connection. The long tapered hub of the weld neck flange offers an excellent flow rate and reduces turbulence. Additionally, this type of flange can withstand high pressure and temperature conditions. These flanges are typically used in high-pressure applications, including oil and gas, chemical, and petrochemical industries.
Flat Flanges
Flat Flanges are another type of VSM flange that is popular in many industries. Plate flange is commonly used in low-pressure applications, as it provides a more cost-effective solution. The plate flange is a flat, circular disk with bolt holes around the perimeter, allowing easy installation and removal.
Blind Flanges
Blind Flanges are used to close the end of a piping system and do not have a bore. They are used to block off pipelines or to create a seal at the end of a pipeline. Blind flanges can be used in high-pressure applications and are commonly used in the oil and gas, chemical, and petrochemical industries. The blind flange is similar to the plate flange but without a center hole. It can be used for testing, cleaning, and inspection purposes.
Understanding the differences between these flanges will help you select the right one for your specific needs.

Advantages and disadvantages of VSM flanges

Flanges are an essential component in piping systems used to connect pipes, valves, and other equipment. The VSM flange is a Swiss standard used in a wide range of industries. While these flanges have their advantages, they also come with some disadvantages. We will discuss both the advantages and disadvantages of VSM flanges.

Advantages of VSM Flanges
Reduced Assembly Time
One of the critical advantages of VSM flanges is their ease of assembly. They require fewer bolts and nuts to tighten, making installation faster and simpler. This is particularly beneficial in large projects where time is of the essence.
Cost-effective
VSM flanges are more cost-effective than other types of flanges, primarily due to their reduced material and labor costs. They require fewer bolts and nuts, resulting in a lower overall cost of installation.
High Strength
VSM flanges are designed to provide exceptional strength and durability. They can withstand high pressure, making them suitable for use in high-pressure applications.
Resistant to Corrosion
VSM flanges are resistant to corrosion and rust, making them ideal for harsh environments. They can withstand exposure to saltwater, chemicals, and other corrosive substances, ensuring their longevity and durability.
Disadvantages of VSM Flanges
Limited Temperature Range
VSM flanges are limited in their ability to withstand high temperatures. They can only be used in applications where the temperature is below 450 degrees Fahrenheit. This makes them unsuitable for high-temperature applications such as those found in power generation and petrochemical industries.
Limited Pressure Range
Although VSM flanges can withstand high pressure, they have a limited pressure range compared to other types of flanges. This makes them unsuitable for use in applications that require extremely high pressures.
Limited Availability
VSM flanges are not as widely available as other types of flanges. This can make it difficult to source them, particularly in regions that are not commonly used.
VSM flanges have several advantages and disadvantages, and the decision to use them should be based on the specific requirements of your application. While they are cost-effective and easy to install, they have limited temperature and pressure ranges, making them unsuitable for specific industries. It’s important to consult with a qualified engineer to determine whether VSM flanges are the right choice for your project. With the right selection, you can enjoy the benefits of VSM flanges and ensure a secure and reliable joint for your pipes, valves, and other components.

Flange Face Finish

Flange face finish is a crucial factor in ensuring proper sealing between flange connections. There are several types of flange face finishes available, each with its unique characteristics and benefits.
Types of Flange Face Finish
One type of flange face finish is the serrated finish. This finish is created by machining a series of grooves into the flange face, providing better grip and improved sealing when compressed. Serrated finishes are commonly used in applications where the flange connection may be subject to vibration or movement.
Another type of flange face finish is the stock finish. This is the default finish provided by the manufacturer, and it typically has a smooth surface. While it may not offer the same grip as a serrated finish, a stock finish is suitable for many standard applications.

Spiral serrated finishes feature a spiral pattern of grooves that helps to distribute stress evenly across the flange face. This can help to prevent damage and distortion, which can lead to leaks or other issues.

Concentric serrated finishes are similar to spiral serrated finishes but feature a series of concentric rings around the flange face. This pattern can provide enhanced sealing and grip compared to other types of serrated finishes.

Finally, a smooth finish is another option for flange face finish. Smooth finishes are often used in applications where the flange connection is not subject to significant movement or vibration. While it may not offer the same grip as a serrated finish, a smooth finish can still provide a reliable seal in many standard applications.

For example:

Machining of gasket faces of flanges to a smooth finish of Ra = 3.2 – 6.3 micrometer (= 125 – 250 microinches AARH)

• AARH stands for Arithmetic Average Roughness Height. It is used to measure the roughness (rather smoothness) of surfaces. 125 AARH means 125 micro inches will be the average height of the ups and downs of the surface.
• 63 AARH is specified for Ring Type Joints.
• 125-250 AARH (it is called smooth finish) is specified for Spiral Wound Gaskets.
• 250-500 AARH (it is called stock finish) is specified for soft gaskets such as NON Asbestos, Graphite sheets, Elastomers etc. If we use smooth finish for soft gaskets enough “biting effect” will not occur and hence the joint may develop leak.
• Sometimes AARH is referred also as Ra which stands for Roughness Average and means the same.

Selecting the appropriate flange face finish is essential to ensuring a proper seal between flange connections. Whether you choose a serrated finish, stock finish, spiral serrated, concentric serrated, or smooth finish, it is important to consider the specific application and potential stresses that the flange connection may face. By selecting the right finish for the job, you can help to prevent leaks and other issues that can lead to costly downtime and repairs.

Standard Specication For VSM Flanges

• Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, VSM, ASA, API-605, AWWA, Custom Drawings
• Size : 1/2″ (15 NB) to 48″ (1200NB)
• Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
• DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629,
• DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
• BS : BS4504 , BS4504, BS1560, BS10
• Flange Face Type : Flate Face (FF), Raised Face(RF), Ring Type Joint (RTJ)

Material of VSM Flanges

VSM Flanges are typically made from a variety of materials, depending on the specific application and desired property. some common materials for VSM Flanges include steel, stainless steel, cast iron, brass, and aluminum. Material selection is typically based on factors such as temperature, pressure, corrosiveness of the fluid or gas being conveyed, and any regulatory requirements or industry standards that may apply. Some common materials used for VSM flanges include:

Stainless Steel VSM 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 VSM Flange	S31803 / S32205 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex VSM Flange	S32750 / S32760 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Copper Nickel VSM Flange	ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Titanium VSM Flange	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 VSM Flange	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 VSM Flange	ASTM B564 / ASME SB564:- Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925
Inconel VSM Flange	ASTM B564 / ASME SB564:- Inconel 600, 601, 625, 718, 783, 690, x750
Nickel VSM Flange	ASTM B564 / ASME SB564:- Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Hastelloy VSM Flange	ASTM B564 / ASME SB564:- Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X
Monel VSM Flange	ASTM B564 / ASME SB564:- Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Carbon Steel VSM Flange	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 VSM Flange	ASTM A182 / ASME SA182:- F5, F9, F11, F12, F22, F91
Alloy 20 VSM Flange	ASTM B462 / ASME SB462:- Carpenter 20 Alloy, Alloy 20Cb-3
254 SMO VSM Flange	ASTM A182 / ASME SA182:- SMO 254/6Mo, UNS S31254, DIN 1.4547
Aluminium VSM Flange	5052 /6061/ 6063 / 2017 / 7075 / etc.
Brass VSM Flange	3602 / 2604 / H59 / H62 / etc.
Other VSM Flange material	Tin bronze, Alumunum bronze, Lead bronze, Nimonic 75, Nimonic 80A, Nimonic 90, AISI 4140, AISI 4130, Mild Steel, Al6XN

Size of VSM Flanges

VSM flanges are typically available in sizes ranging from NB10 to NB600 in diameter. However, the exact size availability may vary depending on the manufacturer and the specific requirements of the application.

Dimensions of VSM Flanges

VSM flanges 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 VSM flanges 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 VSM flanges are specified in the standard.

Dimensions of VSM 18703 flat flange for welding PN 6

Original no.	Nominal diameter	pressure / bar	thickness [mm]	Ø Pipe	Ø diameter hole [mm]	Ø diameter circle [mm]	Number of holes	Ø Flange diameter
VSM 18695	25	6	12	33.7	11.5	75	4	100
VSM 18695	32	6	14	42.4	14	90	4	120
VSM 18695	40	6	14	48.3	14	100	4	130
VSM 18695	50	6	14	60.3	14	110	4	140
VSM 18695	65	6	14	76.1	14	130	4	160
VSM 18695	80	6	16	88.9	18	150	4	190
VSM 18695	100	6	16	108	18	170	4	210
VSM 18695	100	6	16	114.3	18	170	4	210
VSM 18695	125	6	18	133	18	200	8	240
VSM 18695	125	6	18	139.7	18	200	8	240
VSM 18695	150	6	20	159	18	225	8	265
VSM 18695	150	6	20	168.3	18	225	8	265
VSM 18695	200	6	22	219.1	18	280	8	320
VSM 18696	200	10	26	219.1	22	295	8	340

Dimensions of VSM 18703 flat flange for welding PN 10

Original no.	Nominal diameter	pressure / bar	thickness [mm]	Ø Pipe	Ø diameter hole [mm]	Ø diameter circle [mm]	Number of holes	Ø Flange diameter
VSM 18696	200	10	26	219.1	22	295	8	340

Dimensions of VSM 18703 flat flange for welding PN 16

Original no.	Nominal diameter	pressure / bar	thickness [mm]	Ø Pipe	Ø diameter hole [mm]	Ø diameter circle [mm]	Number of holes	Ø Flange diameter
VSM 18697	15	10-16	12	21.3	14	65	4	95
VSM 18697	25	10-16	14	33.7	14	85	4	115
VSM 18697	32	10-16	16	42.4	18	100	4	140
VSM 18697	40	10-16	16	44.5	18	110	4	150
VSM 18697	40	10-16	16	48.3	18	110	4	150
VSM 18697	50	10-16	18	60.3	18	125	4	165
VSM 18697	65	10-16	18	76.1	18	145	4	185
VSM 18697	80	16	20	88.9	18	160	8	200
VSM 18697	100	10-16	22	108	18	180	8	220
VSM 18697	100	10-16	22	114.3	18	180	8	220
VSM 18697	125	10-16	24	133	18	210	8	250
VSM 18697	125	10-16	24	139.7	18	210	8	250
VSM 18697	150	10-16	24	159	22	240	8	285
VSM 18697	150	10-16	24	168.3	22	240	8	285
VSM 18697	200	16	26	219.1	22	295	12	340

Dimensions of VSM 18703 weld neck flange PN 6

Original no.	Nominal diameter	pressure / bar	thickness [mm]	Ø Pipe	Ø diameter hole [mm]	Ø diameter circle [mm]	Number of holes	Ø Flange diameter
VSM 18716	25	6	14	33.7	11.5	75	4	100
VSM 18716	32	6	14	42.4	14	90	4	120
VSM 18716	40	6	14	48.3	14	100	4	130
VSM 18716	50	6	14	60.3	14	110	4	140
VSM 18716	65	6	14	76.1	14	130	4	160
VSM 18716	80	6	16	88.9	18	150	4	190
VSM 18716	100	6	16	108	18	170	4	210
VSM 18716	100	6	16	114.3	18	170	4	210

Dimensions of VSM 18703 weld neck flange PN 16

Original no.	Nominal diameter	pressure / bar	thickness [mm]	Ø Pipe	Ø diameter hole [mm]	Ø diameter circle [mm]	Number of holes	Ø Flange diameter
VSM 18718	15	10-16	14	21.3	14	65	4	95
VSM 18718	20	10-16	16	26.9	14	75	4	105
VSM 18718	25	10-16	16	30	14	85	4	115
VSM 18718	25	10-16	16	33.7	14	85	4	115
VSM 18718	32	10-16	16	42.4	18	100	4	140
VSM 18718	40	10-16	16	48.3	18	110	4	150
VSM 18718	50	10-16	18	57	18	125	4	165
VSM 18718	50	10-16	18	60.3	18	125	4	165
VSM 18718	65	10-16	18	76.1	18	145	4	185
VSM 18718	80	16	20	88.9	18	160	8	200
VSM 18718	100	10-16	20	108	18	180	8	220
VSM 18718	100	10-16	20	114.3	18	180	8	220
VSM 18718	125	10-16	22	133	18	210	8	250
VSM 18718	125	10-16	22	139.7	18	210	8	250
VSM 18718	150	10-16	22	159	22	240	8	285
VSM 18718	150	10-16	22	168.3	22	240	8	285
VSM 18718	200	16	24	219.1	22	295	12	340

Dimensions of VSM 18703 blind flange

Original no.	Nominal diameter	pressure / bar	thickness [mm]	Ø diameter hole [mm]	Ø diameter circle [mm]	Number of holes	Ø Flange diameter
VSM 18703	25	10-16	14	14	85	4	115
VSM 18703	40	6	14	14	100	4	130
VSM 18703	50	6	14	14	110	4	140
VSM 18703	32	10-16	16	18	100	4	140
VSM 18703	40	10-16	16	18	110	4	150
VSM 18703	65	6	14	14	130	4	160
VSM 18703	50	10-16	18	18	125	4	165
VSM 18703	65	10-16	18	18	145	4	185
VSM 18703	80	6	16	18	150	4	190
VSM 18703	80	16	20	18	160	8	200
VSM 18703	100	6	16	18	170	4	210
VSM 18703	100	10-16	22	18	180	8	220
VSM 18703	125	6	18	18	200	8	240
VSM 18703	125	10-16	24	18	210	8	250
VSM 18703	150	6	20	18	225	8	265
VSM 18703	150	10-16	24	22	240	8	285
VSM 18703	200	16	26	22	295	12	340
VSM 18703	200	10	26	22	295	8	340

Manufacturing process of VSM flange

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

Manufacturing process of VSM forged flange

The welding neck flanges shall be forged steel, and the blind flanges may be made from either forged steel or from steel plate.

• 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.

Manufacturing process of VSM 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 VSM 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 VSM Flanges

VSM flanges are typically marked with certain information to identify the specific type of flange and its characteristics. This information may include the manufacturer’s name or logo, the flange size and rating, the material grade, and any relevant certifications or standards that the flange meets.
For example, an VSM flange may be marked with a size such as “6 inch” to indicate the diameter of the flange, and a rating such as “150#” to indicate the pressure rating of the flange. It may also be marked with a material grade such as “A105” to indicate the type of material the flange is made from, and a certification such as “VSM” to indicate that it meets the standards. The male flange is usually identified with an “M” or “Male” marking, while the female flange is marked with an “F” or “Female” marking. Additionally, the flange size, pressure rating, and material may also be marked on the flange for further identification and proper installation.
In addition to these markings, VSM flanges may also have other markings such as heat numbers or serial numbers for traceability purposes. These markings may be stamped, laser etched, or otherwise inscribed on the flange to ensure that the flange can be traced back to its manufacturing source if necessary.

Packing of VSM Flanges

How to package VSM flanges? To pack the VSM flange, follow these steps:

When it comes to packaging VSM flanges, 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 VSM flanges.
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 VSM flanges 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 VSM Flanges

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

Material
The first thing to inspect in a VSM flange 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 VSM flange 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 VSM flanges, 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 VSM Flanges

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

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

How to purchase the correct VSM flanges?

Are you in the market for VSM flanges 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 VSM flanges to ensure that you make the right decision.
Determine the Material Needed
The first step to purchasing the correct VSM flanges 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 Type
There are several types of flanges available under the VSM standard, including weld-neck, flat, blind, . Each flange type has its unique features and benefits. For example, weld-neck flanges are suitable for high-pressure and high-temperature applications, while flat flanges are ideal for low-pressure applications. Consider the application and the system design when selecting the appropriate flange type.
Determine the Flange Size and Pressure Class
Once you have identified the material and flange type, the next step is to determine the size and pressure class of the flange. VSM flanges 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 VSM flanges 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 VSM flanges, 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 VSM flanges 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 VSM flanges manufacturer?

Selecting the right manufacturer for VSM flanges 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 VSM flanges manufacturer.
Quality of Products
The first factor to consider when selecting a VSM flanges 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 VSM flanges 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 VSM flanges 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 VSM Flange Supplier?

Jihua is a well-established and reputable manufacturer and supplier of VSM flanges 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 VSM flange supplier:

• High-quality products: Jihua is committed to providing high-quality VSM flanges 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 VSM flanges at an affordable price.
• Wide range of products: Jihua offers a wide range of VSM flanges, 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 VSM flanges that can meet your needs and exceed your expectations.

Export Country For VSM 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