Product Details
Place of Origin: Xi'an, Shaanxi Province, China
Brand Name: PeterTrade(PT)
Payment & Shipping Terms
Minimum Order Quantity: 1-10 Pieces
Price: negotiable
Packaging Details: Wooden Case,plywood Case,pallet Etc.
Delivery Time: about 15-45 days, accordingly
Payment Terms: D/A, T/T, L/C,D/P
Supply Ability: 100-200 Ton/Tons Per Month
Product Standard: |
DIN 2636 Weld Neck Flanges(WNRF) |
Face Type: |
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF) |
Material: |
Stainless Steel Flanges And Carbon Steel Flanges |
Size: |
From DN 10 To 400 |
Pressures: |
PN 64 |
Surface Treatment: |
Black Painting / Anti Rust Oil / Hot Dip Galvanized |
Manufacturing Methods: |
Casting, Forging, Casting And Forging, Medium Plate Cutting, Casting |
Apply For: |
Chemical Industry, Oil And Gas Industry, Wastewater Treatment And Environmental Protection Industry, Pharmaceutical And Food Industry, Power And Heating Industry |
Product Standard: |
DIN 2636 Weld Neck Flanges(WNRF) |
Face Type: |
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF) |
Material: |
Stainless Steel Flanges And Carbon Steel Flanges |
Size: |
From DN 10 To 400 |
Pressures: |
PN 64 |
Surface Treatment: |
Black Painting / Anti Rust Oil / Hot Dip Galvanized |
Manufacturing Methods: |
Casting, Forging, Casting And Forging, Medium Plate Cutting, Casting |
Apply For: |
Chemical Industry, Oil And Gas Industry, Wastewater Treatment And Environmental Protection Industry, Pharmaceutical And Food Industry, Power And Heating Industry |
DIN 2636 Carbon Steel and Stainless Steel Weld Neck Flanges WNRF PN64 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 widely regarded as one of the most popular and preferred flange types, particularly in larger sizes and higher pressure classes. Their design, which includes a neck extension with a weld bevel at the end, allows for a superior and robust connection when butt-welded directly to the pipe.
Weld neck flanges are commonly chosen in modern applications:
Superior Strength: Weld neck flanges provide excellent strength and reliability due to their welded connection with the pipe. The welding process creates a strong joint, capable of withstanding high pressures, heavy loads, and thermal stresses. This makes weld neck flanges suitable for applications where structural integrity is essential.
Natural Flow Path: The smooth, continuous bore of the weld neck flange creates an unobstructed flow path for fluids, gases, or slurries. This minimizes turbulence, pressure drop, and the risk of erosion or corrosion within the piping system. The natural flow path of weld neck flanges is particularly beneficial in high-pressure applications where efficient fluid flow is crucial.
Leakage Prevention: The weld neck design provides a reliable and leak-resistant connection. The welded joint between the flange and the pipe eliminates the need for a separate gasket, reducing the chances of leakage or failure at the connection point. This is especially important in critical applications where leaks can have severe consequences.
High Pressure and Temperature Capability: Weld neck flanges are capable of withstanding high pressure and temperature conditions. Their sturdy construction and welded connection make them suitable for demanding applications, such as those found in oil and gas, chemical processing, power generation, and steam systems.
Wide Range of Sizes and Pressure Classes: Weld neck flanges are available in a wide range of sizes and pressure classes, allowing for flexibility in design and compatibility with various piping systems. This versatility makes them a preferred choice for applications requiring larger diameters and higher pressure ratings.
DIN 2636 Weld Neck Flange Dimensions:
DIN2636 Welding Neck Flange PN64 | |||||||||||||||
DN | d1 | D | t | k | T | d3 | S | r | a | d4 | f | No. of holes | d2 |
Weight (KG) |
|
ISO | DIN | ||||||||||||||
10 | - | 14 | 100 | 20 | 70 | 45 | 28 | 1.8 | 4 | 6 | 40 | 2 | 4 | 14 | 1.1 |
17.2 | - | 100 | 20 | 70 | 45 | 32 | 1.8 | 4 | 6 | 40 | 2 | 4 | 14 | 1.1 | |
15 | - | 20 | 105 | 20 | 75 | 45 | 32 | 2.0 | 4 | 6 | 45 | 2 | 4 | 14 | 1.2 |
21.3 | - | 105 | 20 | 75 | 45 | 34 | 2.0 | 4 | 6 | 45 | 2 | 4 | 14 | 1.2 | |
25 | - | 30 | 140 | 24 | 100 | 58 | 48 | 2.6 | 4 | 8 | 68 | 2 | 4 | 18 | 2.6 |
33.7 | - | 140 | 24 | 100 | 58 | 52 | 2.6 | 4 | 8 | 68 | 2 | 4 | 18 | 2.6 | |
40 | - | 44.5 | 170 | 26 | 125 | 62 | 65 | 2.9 | 6 | 10 | 88 | 3 | 4 | 22 | 4.0 |
48.3 | - | 170 | 26 | 125 | 62 | 70 | 2.9 | 6 | 10 | 88 | 3 | 4 | 22 | 4.0 | |
50 | - | 57 | 180 | 26 | 135 | 62 | 78 | 2.9 | 6 | 10 | 102 | 3 | 4 | 22 | 4.5 |
60.3 | - | 180 | 26 | 135 | 62 | 82 | 2.9 | 6 | 10 | 102 | 3 | 4 | 22 | 4.4 | |
65 | 76.1 | - | 205 | 26 | 160 | 66 | 98 | 3.2 | 6 | 12 | 122 | 3 | 8 | 22 | 5.5 |
80 | 88.9 | - | 215 | 28 | 170 | 72 | 112 | 3.6 | 8 | 12 | 138 | 3 | 8 | 22 | 6.5 |
100 | - | 108 | 250 | 30 | 200 | 76 | 132 | 4.0 | 8 | 12 | 162 | 3 | 8 | 26 | 9.3 |
114.3 | - | 250 | 30 | 200 | 76 | 138 | 4.0 | 8 | 12 | 162 | 3 | 8 | 26 | 9.1 | |
125 | - | 133 | 295 | 34 | 240 | 88 | 162 | 4.5 | 8 | 12 | 188 | 3 | 8 | 30 | 14.5 |
139.7 | - | 295 | 34 | 240 | 88 | 168 | 4.5 | 8 | 12 | 188 | 3 | 8 | 30 | 14.2 | |
150 | - | 159 | 345 | 36 | 280 | 95 | 192 | 5.6 | 10 | 12 | 218 | 3 | 8 | 33 | 21.4 |
168.3 | - | 345 | 36 | 280 | 95 | 202 | 5.6 | 10 | 12 | 218 | 3 | 8 | 33 | 20.9 | |
175 | 193.7 | - | 375 | 40 | 310 | 105 | 228 | 6.3 | 10 | 16 | 260 | 3 | 12 | 33 | 26.3 |
200 | 219.1 | - | 415 | 42 | 345 | 110 | 256 | 7.1 | 10 | 16 | 285 | 3 | 12 | 36 | 33.6 |
250 | - | 267 | 470 | 46 | 400 | 125 | 310 | 8.8 | 12 | 18 | 345 | 3 | 12 | 36 | 48.0 |
273.0 | - | 470 | 46 | 400 | 125 | 316 | 8.8 | 12 | 18 | 345 | 3 | 12 | 36 | 47.3 | |
300 | 323.9 | - | 530 | 52 | 460 | 140 | 372 | 11.0 | 12 | 18 | 410 | 4 | 16 | 36 | 66.4 |
350 | 355.6 | - | 600 | 56 | 525 | 150 | 420 | 12.5 | 12 | 20 | 465 | 4 | 16 | 39 | 96.2 |
- | 368 | 600 | 56 | 525 | 150 | 420 | 12.5 | 12 | 20 | 465 | 4 | 16 | 39 | 91.8 | |
400 | 406.4 | - | 670 | 60 | 585 | 160 | 475 | 14.2 | 12 | 20 | 535 | 4 | 16 | 42 | 127.7 |
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.
Can DIN 2636 Weld Neck Flanges be used in high-pressure steam systems:
DIN 2636 weld neck flanges can be used in high-pressure steam systems. DIN 2636 is a standard specification for weld neck flanges with higher pressure ratings compared to DIN 2635. These flanges are specifically designed to handle elevated pressures, making them suitable for high-pressure steam applications.
When using DIN 2636 weld neck flanges in high-pressure steam systems, it is important to consider the following factors:
Material: DIN 2636 weld neck flanges are available in different materials, such as carbon steel and stainless steel. The material selection should consider factors such as strength, corrosion resistance, and high-temperature capabilities. Stainless steel flanges, particularly those made from austenitic stainless steel, are commonly used in high-pressure steam systems due to their resistance to corrosion and oxidation at high temperatures.
Pressure Rating: DIN 2636 weld neck flanges have higher pressure ratings compared to DIN 2635 flanges, indicating their ability to withstand higher pressures. Ensure that the flanges have a pressure rating suitable for the operating pressure of the high-pressure steam system.
Gasket Material: Proper gasket selection is crucial for achieving a reliable and leak-free joint in steam systems. Choose gasket materials that are suitable for high-temperature and high-pressure applications, such as graphite or spiral wound gaskets with appropriate fillers.
Welding Procedures: Similar to DIN 2635 flanges, proper welding procedures and techniques should be followed when connecting DIN 2636 weld neck flanges to pipes. Ensure that the welding procedures comply with relevant codes and standards and are appropriate for the materials being joined. Proper welding ensures a strong and reliable joint that can withstand the high pressures and temperatures of steam systems.
Applications of DIN 2636 Weld Neck Flanges:
DIN 2636 weld neck flanges are utilized in various applications where their specific characteristics are advantageous. Some common applications of DIN 2636 weld neck flanges include:
Petrochemical Industry: DIN 2636 weld neck flanges are commonly employed in the petrochemical industry for connecting pipelines, equipment, and vessels. Their robust construction and high-pressure capabilities make them suitable for handling corrosive fluids, high temperatures, and extreme pressures.
Oil and Gas Sector: In the oil and gas sector, DIN 2636 weld neck flanges find application in offshore platforms, refineries, and pipelines. They provide a reliable and leak-proof connection, ensuring the safe and efficient transport of oil, gas, and other hydrocarbon products.
Chemical Processing: DIN 2636 weld neck flanges are used in chemical processing plants where resistance to corrosive chemicals and high temperatures is essential. Their ability to withstand aggressive substances and maintain integrity under demanding conditions makes them suitable for various chemical processes.
Power Generation: Weld neck flanges are widely employed in power generation facilities, including thermal power plants and nuclear power plants. DIN 2636 weld neck flanges are used in piping systems for transporting steam, hot water, and other fluids at high pressures and temperatures.
Shipbuilding: Shipbuilding and marine applications often require weld neck flanges for connecting pipes, valves, and other equipment on ships and offshore platforms. DIN 2636 weld neck flanges are chosen for their reliability, strength, and resistance to harsh marine environments.
Food and Beverage Industry: In the food and beverage industry, DIN 2636 weld neck flanges are utilized in sanitary piping systems. Stainless steel weld neck flanges are particularly preferred due to their hygienic properties and resistance to corrosion, making them suitable for handling food, beverages, and pharmaceutical products.