... mainly steel pipe include carbon steel seamless pipe, seamless roll steel pipe, Double-side buried arc spiral welded pipes, ERW pipe, SSAW pipe. etc. ... R2002), API SPEC 5Lmaterial:10#, 20#, 16MN, Q295API Welded Steel Pipe For LSAW SSAW ERW 1. Steel Pipes (LSAW) OD: ... mainly offers a variety of steel, forged, wear-resistant, plastic-lined pipeline fittings which are applicable under low, middle and ...