Steel Pipe, Carbon Steel Pipe, Seamless Steel Pipe manufacturer / supplier in China, offering Supply 3PE Coating Large Diameter API 5L Psl1 X42 Welded Carbon SSAW Steel Pipe, API 5dp Oil Drill Pipe with API Thread for Drilling Well Used, Bare Line Pipe API5l Grade X42/X60/X70 ERW Welded Carbon Steel Pipe and so on.