Introduction to 316 Necked Welding Flange

The 316 Flanged Socket Welding Flange is categorized by the 316 stainless steel material, which is also known as the 316 stainless steel flanged socket welding flange. It is a commonly used type of stainless steel flange material. The 304 Flanged Socket Welding Flange material is also widely used, abbreviated as SO flange.

316颈平焊法兰, with the addition of Mo element, significantly enhances its corrosion resistance and high-temperature strength. It can withstand temperatures up to 1200-1300 degrees Celsius, making it suitable for use under harsh conditions.

Specification Model

DN15-DN1000

Pressure Grade

PN6~PN40

Sealing Surface Type

Rough (RF), Flat (FF), Raised/Dished (MFM), Concave (FM), Raised (M), Tongue and Groove (TG)

The concavo-convex necked flat焊接flange (MFM) is for配套 use.

316 Forged Socket Weld Flange Material

316、316L、0Cr17Ni12Mo2

316 Flanged Weld Neck Fittings Compliance Standard

Chemical Industry Standard: HG/T 20592-20635-2009

National Standard: GB/T 9116-2010

ASME Standards: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

German Standard: DIN 2630-2637, DIN - EN 1092-1

Flange connection type

Single-sided welding, double-sided bolted fastening.

Production Process

Oxygen furnace blanking, overall forging or finished forging cutting and shaping, high-precision CNC lathe turning, CNC articulated drill boring.

Procurement Recommendations

1: Recommend purchasing from a正规 necked flat welding flange manufacturer with a certain production scale.

2: Manufacturers of flanges are required to provide material inspection reports and relevant documents for necked butt-welding flanges.

3: Necked flat welding flanges must have corresponding specification model embossments and markings.