... ingredients, perfect furface quality, high precision dimension. Application: Seamless steel tubes for equipment, pipelines, vessels, pipe fittingsand mechanical StructuresGrade ... 20Cr, 40Cr, 20CrMo, 35CrMo, 35CrMoAl,50Crv, 30CrMnSi Other steel grade can be provided after negotiating with customersDimensions, Mechanical properties ... will be highly appreciated andtreated. OEM is welcomed. structure pipe