China API 5L Grade B ERW Welded Pipe Manufacturer Supplies API 5L Grade B ERW Welded Pipe, Size 12 Inch, Pressure SCH 40, Black Painting, For Oil, Gas.
China API 5L X52NS PSL2 LSAW Pipe Manufacturer Offers API 5L X52NS PSL2 LSAW Steel Pipe, Size 812.8mm x 17.48mm, Oil Coating Treatment, For Oil or Gas.