welding neck flange
Butt welding flange is a kind of pipe fitting, refers to the flange with a neck and a circular pipe transition and butt welding connection with the pipe.Butt welding flange is not easy to deformation, good sealing, widely used, has the corresponding rigidand elastic requirements and reasonable butt welding thinning transition, the welding joint from the joint surface distance, the joint surface from welding temperature deformation.