316 Neck Welding Flange

316 Neck Welding Flange

Executive standard: GB/T 9116-2010

Size: DN15-DN1000

Pressure level: PN6~PN40

Connection form: single-sided welding, double-sided nut connection

316 necked flat welding flange is divided into stainless steel 316 material, that is, stainless steel 316 necked flat welding flange, which is one of the more commonly used stainless steel flange materials, among which 304 is more commonly used. There are also many applications of neck flat welding flange materials, which are referred to as so flanges in English;

The addition of Mo element to 316 flat welding flange with neck greatly improves its corrosion resistance and high-temperature strength. The high-temperature resistance can reach 1200-1300 degrees, and it can be used under harsh conditions.

316 Neck Welding Flange

Specifications
DN15-DN1000

Pressure Level
PN6~PN40

Type of sealing surface
Raised face (RF), full flat face (FF), concave and convex face (MFM), concave face (FM), convex face (M), tongue and groove face (TG);

Among them, the concave and convex surface with neck flat welding flange (MFM) belongs to supporting use;

316 Neck Welding Flange Material
316, 316L, 0Cr17Ni12Mo2

316 Neck Welding Flange Executive Standard
Chemical standard: HG/T20592~20635-2009

National standard: GB/T 9116-2010

American Standard: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48;

German standard: DIN2630-2637, DIN-EN1092-1;

Flange connection form
Single-sided welding, double-sided bolt tightening;

316 Neck Welding Flange

Production Process
Sub-oxygen furnace cutting, integral forging or finished product forging and cutting, high-precision CNC lathe turning, CNC radial drilling and drilling;

Purchasing advice
1: Flange manufacturers need to provide relevant information such as the material test report of the flange with neck flat welding;

2: The flat welding flange with neck needs to have the corresponding specification and model steel stamp and logo;