Due to the relatively large surface density, even if the outer surface is not polished, it can generally reach about 260 mesh. If the stainless steel welded pipe is polished inside and outside, its straightness will decrease, so if there are special requirements for the straightness of the steel pipe, it is generally not recommended to polish the surface, and the surface of the stainless steel welded pipe after polishing is already very bright. Cold-rolled stainless steel welded pipe has excellent comprehensive performance, can withstand high pressure, cold bending, flaring, flattening without cracking, not 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.
The promotion and application of stainless steel welded pipes can save steel, improve processing efficiency, reduce processing processes and equipment investment, and help improve product quality and reduce costs. Because the size of 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 on mechanical equipment, no need for processing, which can save costs and greatly save machining hours, improve production volume and material utilization. Therefore, the accuracy of stainless steel welded pipe products will generally be controlled at about 0.02 mm.
The internal and external polishing of stainless steel welded pipes is very important, generally speaking, steel pipes with a diameter of 89 mm or less, the surface finish after polishing is very high. And more than 89 mm, especially more than 108 mm stainless steel welded pipe, the outer surface is not very ideal, if the surface of the welded pipe requires no pockmarks and no small holes, generally need to polish after polishing, and then automatic polishing.
Stainless steel welded pipe refers to the inner and outer diameter dimensional accuracy (tolerance range) strict, inner and outer surface finish, roundness, straightness is good, uniform wall thickness of the steel pipe, the main technical indicators of the stainless steel welded pipe produced by this technology has reached or partially exceeded the requirements of the national standard GB12771--2002 and the standard ISO4394/I-1980 (E). Stainless steel welded pipe is a new type of high-tech energy-saving product. The promotion and application of welded pipes saves steel, improves processing efficiency and saves energy.
