The following is a standard steel pipe commonly used terminology introduced 1, Nominal size and actual size Nominal size is the nominal size specified in the standard, it is the ideal size of the production process to give hope, but the actual produc...

Seamless steel tube is a hollow cross-section, no seams around a circular, square, rectangular steel. Seamless steel ingot is made of perforated or solid through the capillary tube, and then hot-rolled, cold-rolled or cold call is made. Seamless s...

Seamless steel pipe is a hollow cross-section, no seams around a circular, square, rectangular steel. Seamless steel ingot is made of perforated or solid through the capillary tube, and then hot-rolled, cold-rolled or cold call is made. Seamless ste...

Bearing steel refers to hot or cold (cold drawn) seamless steel tubes for the manufacture of ordinary bearing rings with. outer diameter of Pipe of 25-180 mm, wall thickness of 3.5-20 mm, divided into sub-normal precision and high precision. Beari...