Stainless steel pipe is a kind of hollow and longitude steel, economic steel section is round shape. Stainless steel pipe and tube has been widely used in oil, chemical industry, medical, food, light industry, equipment and apparatus and structural parts etc. In additional, when twisting and anti-twist intensity is equal, stainless steel is more lighter, so it used in equipment parts and projects structural. Also used to produce all kinds of conventional weapons, barrel, shells and so on. This kind of pipes divide into: stainless steel seamless pipes and stainless welded pipes. According by manufacturing process can divided into following basic types: hot-rolled, extrusion, cold-circular, hexagonal, equilateral triangle, octagonal and other special-shaped stainless steel pipe.

ASTM A312 - For high temperature and general corrosiveASTM A213 - stainless tubing for boiler, heat exchanger

ASTM A269 - General use stainless tubing

ASTM A789/ASME SA789 - Extremely corrosive resistanceASTM A790/ASME SA790 - Duplex stainless tubingASME SB677 - Good resistance on stress corrosion cracking

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When the usage is in cylinders, bearings or other hollow formed parts, there is a usage for mechanical purposes. The tubing that is available can be manipulated easily and it results in a wide range of cross-sectional shapes, or even shapes that are round or the ones that need to fit in the cross-section. It finds widespread usage in case of mechanical tubing.