DIN 2632 Q235 / A105 / A694 F42 Carbon Steel and Stainless Steel Weld Neck Flange PN10 WNRF A105 SS304 DN10-DN3000

DIN 2632 Carbon Steel and Stainless Steel Weld Neck Flanges WNRF PN10 for Industrial Purposes

Introduction:

We are Shaanxi Peter International Trade Co., Ltd., an experienced and reputable company with over 20 years of expertise in providing high-quality DIN weld neck flanges. Our commitment as a reliable supplier has earned us a strong reputation in the industry.

DIN weld neck flanges are designed to be butt-welded to the end of a pipe. They feature a long tapered hub that gradually merges with the pipe, providing reinforcement and minimizing stress concentrations. These flanges are commonly used in Europe, particularly in Germany, as they adhere to the specific dimensional and technical requirements set by DIN standards.

Our DIN weld neck flanges are available in a variety of materials, including carbon steel, stainless steel, and alloy steel. This versatility allows them to be utilized in diverse applications across industries such as oil and gas, petrochemical, power generation, and more.

Description of DIN Weld Neck Flanges:

Weld neck flanges are indeed distinguishable by their long tapered hub, which plays a crucial role in providing reinforcement when welded to a pipe. The welding of the flange's neck to a pipe allows stress to be transferred from the flange to the pipe, resulting in enhanced support and stability. These flanges are commonly employed in applications involving high pressure and extreme temperatures, where the reliability and strength of the joint are of utmost importance.

At Shaanxi Peter International Trade Co., Ltd., we offer raised face weld neck flanges that comply with DIN standards. These standards ensure dimensional compatibility and technical specifications, allowing for seamless integration into various piping systems. Our flanges are available in both carbon steel and stainless steel, providing options suitable for different operating conditions and corrosion resistance requirements.

DIN 2632 Weld Neck Flange Dimensions:

1.Dimensions are in millimeters(mm).

2.Dimensions can be specified by different purchasers.

Materials of DIN Weld Neck Flanges:

DIN weld neck flanges are available in various materials to suit different applications and operating conditions. The material selection for DIN weld neck flanges depends on factors such as temperature, pressure, corrosion resistance, and compatibility with the conveyed fluid or gas.

Grades of Carbon Steel:

1.Q235: Q235 is a commonly used carbon structural steel grade specified in the Chinese national standard GB/T 700. It is often used in general engineering structures and manufacturing industries. In carbon steel flanges, Q235 material is commonly used for pipeline systems operating at low pressure, low temperature, and non-critical stress environments.

2.A105: A105 is a carbon steel material specified in the American ASTM standard, complying with ASTM A105/A105M requirements. A105 material has good weldability and mechanical properties, making it suitable for use in a wide temperature range from low to high temperatures. It is commonly used for pipeline systems and valve connections under high temperature and high-pressure conditions.

3.A350 LF2: A350 LF2 is also a carbon steel material specified in the ASTM standard, complying with ASTM A350/A350M requirements. LF2 indicates low-temperature service, and this material has good low-temperature toughness and crack resistance. It is commonly used for pipeline systems and valve connections under low-temperature conditions.

4.A694 F42/F52/F60/F65/F70: These material grades are specified in the ASTM A694 standard for carbon steel materials used in high-strength, low-temperature, or normal temperature high-pressure pipeline systems and valve connections. Different grades of materials have different strengths and corrosion resistance properties, suitable for various working conditions.

5.ASTM A181 Gr.1/Gr.2: These carbon steel flange material grades are suitable for pressure vessels, valves, and pipeline fittings under low pressure and low temperature conditions. They have good machinability and mechanical performance.

6.ASTM A516 Gr.70: Gr.70 is a commonly used medium carbon steel grade, known for its good weldability and machinability, suitable for manufacturing flanges and pipe fittings, among others.

7.A216 WCB: A216 WCB is a carbon steel casting material specified in the American ASTM standard, complying with ASTM A216/A216M requirements. WCB stands for cast carbon steel, and it is commonly used for carbon steel flanges that require casting in general engineering structures and manufacturing industries.

Grades of Stainless Steel:

1.ASTM A182 F304/304L: This is a common material grade for stainless steel flanges, suitable for general industrial applications. It primarily consists of 18% chromium and 8% nickel, providing good corrosion resistance and oxidation resistance. F304L is the low carbon version, suitable for use in welding conditions.

2.ASTM A182 F316/316L: This is a material grade with better corrosion resistance, commonly used in corrosive environments such as chemical, petroleum, and marine industries. It contains 16-18% chromium, 10-14% nickel, and 2-3% molybdenum, which enables resistance against strong corrosive media like sulfuric acid and hydrochloric acid. F316L is the low carbon version, helping to reduce intergranular corrosion during welding.

3.ASTM A182 F321: This is a titanium-stabilized material grade for stainless steel flanges, suitable for high-temperature environments. It contains 18-20% chromium, 9-12% nickel, and also includes 0.15-0.30% titanium, enhancing corrosion resistance and high-temperature performance.

How to install weld neck flanges:

Installing weld neck flanges requires careful attention to ensure a proper and secure connection. Here are the general steps to follow for weld neck flange installation:

Preparation: Ensure that the pipe ends and flange surfaces are clean and free from dirt, debris, and contaminants. Check that the flange and pipe are of the correct size and material, and verify that they are compatible.

Alignment: Align the flange with the pipe, ensuring that the bolt holes on the flange match the ones on the pipe. The weld bevel on the flange should be aligned with the beveled end of the pipe.

Welding: Tack weld the flange to the pipe at several points around the circumference. These tack welds hold the flange in place during the final welding process.

Welding Neck: Weld the neck of the flange to the pipe using the appropriate welding technique (e.g., TIG or MIG welding). Follow the recommended welding procedures and ensure proper penetration and fusion between the flange and pipe.

Weld Quality: Inspect the weld for any defects, such as cracks, incomplete penetration, or excessive porosity. Ensure that the weld meets the required quality standards and specifications.

Post-Weld Treatment: After welding, perform any required post-weld treatments, such as heat treatment or stress relieving, as specified by the applicable codes and standards.

Bolting: Once the weld is complete and the flange-to-pipe connection is secure, proceed with bolting the flange to the mating flange or equipment. Use appropriate gaskets and bolts/nuts, following the recommended tightening sequence and torque values specified by the flange manufacturer or industry standards.

Inspection and Testing: Inspect the completed installation for any visible defects, such as misalignment or leaks. Perform pressure testing, if required, to ensure the integrity and reliability of the flange connection.

Applications of DIN 2632 Weld Neck Flanges:

DIN 2632 weld neck flanges are specifically designed for use in specific applications where their unique characteristics are required. Here are some common applications of DIN 2632 weld neck flanges:

Oil and Gas Industry: DIN 2632 Weld Neck Flanges are widely used in the oil and gas industry for connecting pipes and equipment in refineries, offshore platforms, pipelines, and petrochemical plants. They are suitable for high-pressure and high-temperature applications commonly found in this industry.

Chemical Processing: These flanges are employed in chemical processing plants for connecting pipelines, reactors, and other equipment. They provide a secure and leak-free connection, ensuring the safe handling and transportation of chemicals and corrosive fluids.

Power Generation: DIN 2632 Weld Neck Flanges are utilized in power plants, including thermal power plants and nuclear power plants. They are used for connecting pipes in boiler systems, steam lines, and other critical applications that require high-pressure and high-temperature capabilities.

Water Treatment: These flanges find application in water treatment plants for connecting pipes and equipment involved in water supply, wastewater treatment, and desalination processes. They are suitable for handling water at various temperatures and pressures.

Pharmaceutical and Food Industries: DIN 2632 Weld Neck Flanges are utilized in pharmaceutical and food processing facilities. They provide a hygienic and reliable connection for pipes carrying sterile fluids, chemicals, and food-grade materials.

Shipbuilding and Marine Industry: These flanges are used in shipbuilding and marine applications, including shipyards, offshore platforms, and marine vessels. They are employed for connecting pipes and equipment in various systems such as fuel lines, cooling systems, and hydraulic systems.

HVAC and Plumbing Systems: DIN 2632 Weld Neck Flanges are employed in heating, ventilation, air conditioning (HVAC), and plumbing systems. They provide a secure connection for pipes carrying hot water, steam, or chilled fluids.

General Industrial Applications: These flanges have widespread use in various industrial sectors, including manufacturing, construction, and infrastructure. They are suitable for connecting pipelines in industrial processes that involve high-pressure fluids or gases.