... Certificate:API CE ISO product nameHebei haiqianwei steel pipe co.,ltdConnectionJOCE formingOD406mm-1422mmWall thickness8mm-50mm(SCH10-XXS)Length3m-12 ... about Hebei haiqianwei steel pipe co.,ltd The equipment of Hebei haiqianwei steel pipe co.,ltd Production Process:Plate Ultrosonic ... Inspection → CoatingThe Process of Hebei haiqianwei steel pipe co.,ltd The Certificate of Hebei haiqianwei steel pipe ...