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1. The influence of the rolling temperature of the seamless steel pipe: the rolling temperature is high, pressure is small, and the head wear is small, so that the inner straight defects are also redu...

Surface striated defects are important indicators affecting the surface quality of cold-rolled products. It is very difficult to solve the problem of surface ridges in many cold rolling mills in China...

The purpose of tempering stainless steel tube is to transform quenched martensite into tempered martensite, eliminate retained austenite, reduce and eliminate internal stress, obtain high hardness, we...

The storage of seamless steel tubes requires the selection of suitable sites and warehouses, and usually requires the following conditions: (1) The site or warehouse where the steel is to be st...

Steel pipes are the most widely used pipes in urban gas projects. Its main advantages are: high strength, good toughness, large load bearing stress, good impact resistance and tightness, good plastici...

There is a certain relationship between the service life of the spiral steel pipe (SSAW) and the surface decarburization of the spiral pipe. If the surface is decarburized, the strength and wear resis...