... :API CE ISO9001 OHSAS product nameSteel pipe welding companyConnectionJOCE formingOD406mm-1422mmWall thickness8mm-50mm( ... ,boiler,precision machines ,petroleum,Chemical,structure pipe,fluid pipe,linepipe etcPackagingExpor packaging :in bundles,Painting ... ray Test → Expansion → Finishing → Straightening → Hydraulic Test → Pipe Ends Beveling → Ultrosonic Test → X-ray Test → Appearance Inspection ...