Carbon steel neck flat welding flange

Carbon steel neck flat welding flange

Executive standard: national standard, American standard, chemical standard

Specification size: DN15-DN600

Pressure rating: PN6~PN40

Connection form: single-sided welding, double-sided nut connection
Brief introduction of carbon steel neck flat welding flange

The carbon steel neck flat welding flange is also a carbon steel neck flat welding flange. The full name is the English name of the neck flat welding steel pipe flange: Slip-on referred to as so flange.

The neck flat welding flange, like the plate flat welding flange, is also a flange that extends steel pipes, fittings, etc. into the flange and connects it to equipment or pipelines through fillet welds.

Diameter range of carbon steel neck flat welding flange: DN10~DN600
Flange sealing surface form

Raised face (RF), concave face (FM), convex face (M), tenon face (T), groove face (G), full flat face (FF).

Flange pressure rating

PN series PN6~PN40;

Class seriesClass150~Class1500;
Material of carbon steel neck flat welding flange

Carbon Steel: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65 ,F70;

The more commonly used materials are 20#, Q235 and 16Mn.

The manufacturing process of carbon steel neck flat welding flange: pure material forging and wool forging (followed by) are suitable for neck flat welding flange and neck butt welding flange;

Sub-oxygen furnace cutting, overall forging or finished forging, cutting and forming processing methods, high-precision CNC lathe turning, CNC rocker drilling;

Advantages and disadvantages of carbon steel neck flat welding flange

Advantages: The flat welding flange with the neck is also a flat welding flange because it has a short neck, which improves the strength of the flange and improves the bearing strength of the flange. So it can be used on higher-pressure pipelines.

Disadvantages: Compared with the plate-type flat welding flange, the cost is higher, and due to its shape, it is easier to bump during transportation.