How to Identify 20# Precision Tube
20# Precision tube is a kind of high-precision steel pipe material after cold drawing or hot rolling. Because the inner and outer walls of 20# precision steel pipe have no oxide layer, high pressure and no leakage, high precision, high smoothness, no deformation of cold bending, flaring, flattening without cracks, etc., it is mainly used to produce pneumatic or hydraulic components, such as The cylinder or cylinder can be a seamless tube or a welded tube. The chemical composition of the precision steel pipe includes carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, and chromium Cr. The difference between 20# precision tube and seamless steel tube 1. The main feature of seamless steel pipe is that it has no welded joint and can withstand large pressure. The product can be a very rough cast or cold-draw. 2. Precision steel pipes are products that have appeared in recent years, mainly due to strict tolerances and roughness of inner and outer wall sizes. 20# pr...