The precision requirements of industrial stainless steel welded pipes are very precise, and the difference is a thousand miles away, so it is required to strictly control the accuracy of stainless steel welded pipes.

Stainless steel welded pipe refers to the steel pipe with strict inner and outer diameter dimensional accuracy (tolerance range), good inner and outer surface finish, roundness and straightness, and uniform wall thickness. The main technical indicators of stainless steel welded pipe produced by this technology have reached or partially exceeded the national level. Requirements of standard GB12771–2002 and standard ISO4394/I–1980(E). How to control the precision of stainless steel welded pipe is a key issue.

Due to the relatively large surface density of stainless steel welded pipes, even if the outer surface is not polished, it can generally reach about 260 mesh. If the stainless steel welded pipe is polished internally and externally, its straightness will decrease. Therefore, if there are special requirements for the straightness of the steel pipe, polishing is generally not recommended. The polished surface of the stainless steel welded pipe is already very bright. Cold‑rolled stainless steel welded pipe has excellent comprehensive performance, can withstand high pressure, cold bending, flaring, flattening without cracking, no wrinkling, and can do various complex deformation and mechanical processing. After the stainless steel welded pipe is vacuum annealed, the steel pipe can be processed. Stainless steel welded pipes are generally used in the manufacture of mechanical structures, hydraulic equipment, machinery and other production fields.

Since the size of the stainless steel welded pipe can be customized according to the needs of users, and the tolerance range is well controlled, it can be directly used in mechanical equipment without further processing, which can save costs and greatly save machining time and increase production. and material utilization. Therefore, the precision of stainless steel welded pipe products is generally controlled at about 0.02 mm.