30 صفحه پی دی اف
RECOMMENDED PRACTICE DET NORSKE VERITAS DNV-RP-F102:2011-PIPELINE FIELD JOINT COATING AND FIELD REPAIR OF LINEPIPE COATING
RECOMMENDED PRACTICE DET NORSKE VERITAS DNV-RP-F102:2011-PIPELINE FIELD JOINT COATING AND FIELD REPAIR OF LINEPIPE COATING