Classification of stainless steel pipes:

1. Classified by production method:

(1) Seamless tube-cold drawn tube, extruded tube, cold rolled tube.

(2) Welded pipe:

(A) Classified by process-gas shielded welded pipe, arc welded pipe, resistance welded pipe (high frequency, low frequency).

(B) According to the weld seam-straight seam welded pipe, spiral welded pipe.

2. Classified by section shape: (1) round steel pipe; (2) rectangular pipe.

3. Classification by wall thickness-thin-walled steel pipe, thick-walled steel pipe

4. Classified by purpose: (1) Civil pipes are divided into round pipes, rectangular pipes, and flower pipes, which are generally used for decoration, construction, structure, etc.;

(2) Industrial pipes: steel pipes for industrial piping, steel pipes for general piping (drinking water pipes), mechanical structure/fluid transfer pipes, boiler heat exchange pipes, food sanitation pipes, etc. Generally used in various fields of industry, such as: petrochemical, paper, nuclear energy, food, beverage, medicine and other industries have higher requirements for fluid media.