Data
Product Introduction
Welding neck flange is a kind of pipe fittings. It refers to a flange with taper neck and butt welded with cylinder or pipe. It is an integral flange.
The neck 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 welded junction and the joint surface is large, and the joint surface is free from welding temperature deformation.
The disadvantage is that it needs to be made of forgings, which consumes a lot of materials and costs a lot of manufacturing. It is suitable for occasions with high pressure and temperature or high sealing requirements.
Scope of application
The neck butt-welding flange adopts a relatively complex trumpet shape structure, which is applicable to the pipeline with large pressure or temperature fluctuation or the pipeline with high temperature, high pressure and low temperature. It is generally used for the connection of pipeline and valve with PN greater than 2.5MPa.