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Product Description
DIN Welding Neck Flange, also known as DIN WN Flange, is a type of flange with a long tapered hub that is welded to the pipe. It is designed for high-pressure systems and is widely used in industrial piping for oil, gas, steam, and chemical applications. The neck helps reduce stress concentration and provides excellent strength under bending and thermal expansion.
DIN Welding Neck Flanges are manufactured according to various DIN standards such as DIN 2631, DIN 2632, DIN 2633, DIN 2634, and DIN 2635, each corresponding to different pressure ratings (PN6 to PN100). These flanges are suitable for use in environments requiring high integrity and leak-proof connections.
| Standard: | ANSI B 16.5 | |||||||||
| Flange type： | welding neck, slip on,blind,lap joint,threaded,socket welding | |||||||||
| Size: | 1/2''-24'' | |||||||||
| Pressure class: | 150LB,300LB,400LB,600LB,900LB,1500LB,2500LB | |||||||||
| Sealing type： | Flat face（FF),Raised face(RF),Ring Joint（RTJ) | |||||||||
| Material： | Carbon steel ASTM A 105/A 105N,A694 F42-F70,A-350LF1/LF2, | |||||||||
| Stainless steel ASTM A 182 F304/304L,F316/316L | ||||||||||
Flange production process
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FAQ
Q1: What are the common types of flanges you supply?
A: We supply a wide range of forged steel flanges, including Blind Flange, Weld Neck Flange, Slip On Flange, Socket Weld Flange, Threaded Flange, and Lap Joint Flange, all conforming to international standards like ANSI/ASME B16.5 and EN1092-1.
Q2: What materials are available for your flanges?
A: We offer flanges in various materials such as Carbon Steel (A105), Stainless Steel (SS304, SS316), and Alloy Steel (F11, F22, etc.). Material customization is available based on project requirements.
Q3: What standards and pressure classes do you support?
A: Our flanges conform to standards including ANSI/ASME B16.5, EN 1092-1, and DIN. Pressure classes range from Class 150 to 2500 (ANSI) and PN6 to PN100 (EN/DIN).
Q4: Do you provide sealing face options like RF or RTJ?
A: Yes. We offer Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) sealing surfaces depending on pressure, sealing performance, and customer requirements.
Q5: What surface treatments are available?
A: Surface treatments include anti-rust oil, black painting, galvanizing, yellow transparent varnish, and custom coatings for corrosive environments.
Q6: Can you provide certificates and test reports?
A: Yes. We provide MTC (EN10204 3.1/3.2), as well as ISO, CE, FM/UL certificates (depending on product type). Third-party inspections like SGS, BV, and TUV are also available.
Q7: What is your typical production lead time?
A: For standard flanges, lead time is usually 30–35 days. For urgent needs or large volumes, we can offer fast-track production based on stock and raw material availability.
Q8: Do you accept OEM branding or customized packaging?
A: Yes. We support OEM logo stamping, custom labels, and export packaging with your brand or specifications.
Q9: Can I request a sample before confirming an order?
A: Absolutely. We are happy to provide free or paid samples for quality inspection, depending on the product type and destination.
