The difference between stainless steel neck flat welding flange and stainless steel neck butt welding flange

2024-01-17 10:22:01

Stainless steel necked butt welding flange: It is a type of pipe fitting, which refers to the transition flange of the necked round pipe and the butt welding connection with the pipe. Stainless steel necked butt welding flange is not easy to deform, has good sealing performance, and is widely used. It has corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition. There is a large distance between the welding joint and the joint surface, and the welding surface is not deformed by the welding temperature. Impact.

Stainless steel necked flat welding flange: means that the pipe and the flange are flat butt jointed and fixed with bolts.

The main differences between stainless steel neck flat welding flange and stainless steel neck butt welding flange include welding form, material, pressure resistance, connection method, etc.

1. Different types of welds: the weld between the stainless steel necked butt welding flange and the stainless steel pipe is a circumferential seam, while the welding seam between the necked flat welding flange and the stainless steel pipe is two corners. The welds of stainless steel necked flat welding flanges do not support X-ray inspection, but the welds of stainless steel necked butt welding flanges do.

2. Different materials: The material of the stainless steel neck butt welding flange is processed from thick ordinary stainless steel plates as required, while the stainless steel neck butt welding flange material is mainly forged from stainless steel.

3. Different pressures: The nominal pressure of stainless steel flat welding flange with neck is 0.6-4.0 MPa, and the nominal pressure of stainless steel butt welding flange with neck is 1-25 MPa.

4. Different connection methods: Stainless steel flat welding flanges with necks are usually connected at the flange angle, while stainless steel butt welding flanges with necks are the butt connection between the flange and the pipe. Stainless steel necked flat welding flanges can only be connected to pipes and cannot be directly connected to butt welding fittings. Stainless steel necked butt weld flanges can generally be connected directly to all butt welded fittings, including pipes.