Place of Origin : Ningbo,China
Payment Terms : Lc
Produce Capacity: Standard and Inspectiom
Large diameter,longitudinal seam,double side, SY/T5037-2000;GB/T3091- 2008;GB/T9711.1-1997;API 5L PSL 1
submerged arc
Spiral seam,double side,submerged arc Q235B/Q345B/Q295/SS400/ST37/S235JR/GrB/X42-X70/
JCOE production line ST44/ST52-3
Diameters 219mm-3420mm