Steel Pipe DIN1629 Steel Grade : St37.0,St44.0,St52.0 ... : 2mm-30mm Length :5.8M ,6M etc Product : Steel Pipe for Pipeline, Vessel and Equipment StructureStandard:DIN 1629Application:It is ... used for manufacturing pipeline,vessel,equipment,pipe fittings and steel structureMain Steel Tube Grade:St37.0,St44 ... know . Your enquiry are highly appreciated .Best regards Steel Pipe