... :X42-X80 PSL1&2 manufacturers'diretly sale Certificate:API CE ISO9001 OHSAS product nameSteel pipe welding companyConnectionJOCE formingOD406mm-1422mmWall thickness8mm-50mm ... caps ends, or as buyer’s request.CertificationCE,API,ISO14001,ISO9001,StandardJIS, GB, DIN, ASTM, API Enclosed some pictures about Steel ...