Stainless steel welded pipe is also called straight seam welded pipe.
It is a steel pipe with a seam on the surface that is bent and deformed into a circular shape or a square shape by a steel strip or a steel plate. The blank used for welded steel pipes is steel plate or strip steel.
Stainless steel welded pipe can be divided into straight seam welded pipes and spiral welded pipes according to weld properties. Their characteristics: simple production process, high production efficiency and low cost. Most of the smaller diameter welded pipes are straight seam welded, while the large diameter welded pipes are mostly spiral welded.
Seamless pipe is a long strip of steel with a hollow section and no seams around it. Seamless steel tubes can be divided into hot rolled tubes, cold rolled tubes, cold drawn tubes, extruded tubes, etc. according to different production methods.
According to the material, it can be divided into ordinary carbon structural tube, low alloy structural tube, high quality carbon structural tube, alloy structural tube, stainless tube and so on. According to special purposes, it can be divided into boiler tubes, geological tubes, oil pipes, etc.