STEEL Grade:
BS 1387: Class A, Class B, Class C
EN10210/EN10219: S235, S235JR, S235J2H, S275, S275JR, S355JRH, S355J2H
API 5L: GR.A, GR.B, X42, X46, X52, X56, X60, X65 X70
ASTM A53: GR.A, GR.B
ASTM A252: GR.1, GR.2, GR.3
ASTM A500: GR.A, GR.B, GR.C, GR.D
GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555
GB/T3091, SY/T5037: Q195, Q215, Q235, Q275, Q295, Q345
line of production: raw material test--end tab welding--plate feeding--edge crimping--edge-plate UT--edge milling and beveling--edge crimping--forming--tack weld and repair-internal wall dedusting--inside welding--outside welding-remove end tab and slag--U.T test--welding and pipe X-ray test--mechanical expansion--hydrostatic testing--pipe end grinding--straightness and roundness--end facing and beveling--U.T test--welding and pipe X-ray test--final inspection-- paintingandmarking--storage--delivery.
الوسم : welding black iron pipe
