304 neck butt welding flange 

The butt welding flange is not easy to deform, has good sealing, and is widely used. It has corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition. The distance between the welding port and the joint surface is large, and the joint surface is free from welding temperature deformation. It adopts a relatively complicated The trumpet-shaped structure is suitable for pipelines with large fluctuations in pressure or temperature or high-temperature, high-pressure and low-temperature pipelines. It is generally used for the connection of pipelines and valves with a PN greater than 2.5MPa; it is also used to transport expensive, flammable and explosive materials. medium pipeline.Steel Pipe Welding Neck Flange       Material     Carbon steel ASTM A1…