... 45#, ST44/52, 40Mn2,35Cr,35CrMoA Seamless pipe for structure DefinitionSeamless steel pipe (or we can name it as ... liquid transportation, large steel structures, oil drilling fields, power plant, automotive drive shafts, bicycle frames, scaffoldings in construction, ... , Thickness: 4-35mm4.USES: used in a general structure engineering machinery manufacturing5.Packaging: in bundles with steel strips, ...