A wide range of stainless steel pipes, for different purposes, different technical requirements, production methods are also different. The current production of steel pipe diameter range of 0.1-4500mm, wall thickness range from 0.01 to 250mm. In order to distinguish its characteristics, the pipe typically according to the following method for classification. Classified by mode of production stainless steel pipe seamless and welded pipe production is divided into two categories, hot-rolled pipes, cold rolled tubes, cold drawn tubes and extruded tubes, cold drawn, cold-rolled seamless steel pipe can be divided into secondary processing of steel pipe; pipe is divided into Longitudinal and spiral welded pipe.