Heating also note there is enough heat preservation

45Mn2 steel is a kind of high strength steel, general yield strength in the more than 700 mpa, main use for high strength structural steel pipe. Delamination defects from the mechanism, it is generally believed the non-metallic inclusion in billet can destroy the continuity of steel pipe and compactness, even serious inclusions in steel pipe internal stratification. Another think is… Read more →