... Pipe/Square Steel Tube/Galvanized Hollow SectionProduct NameGalvanized Square Pipe/Square Steel Tube/Galvanized Hollow SectionSizeOD:20*20-600* ... Be Provided)StandardASTM, ASME, DIN,GB,JIS,ASNI,BSUsageUsed For Structure, Accessorize And ConstructionEndsUsually Plain ,But Can Be ... international company in piping businessand create an exceptional value for our Company and the Clients.To best serve ...