... with mainly steel pipe include carbon steel seamless pipe, seamless roll steel pipe, Double-side buried arc spiral welded pipes, ERW pipe, SSAW pipe. etc.We ... , ASTM A53, ASTM A106, DIN1629material:10#, 20#, 16MN, Q2952.Double-side Buried Arc Spiral Welded PipesOD:219mm-1820mmTHK:5.0mm ... R2002), API SPEC 5Lmaterial:10#, 20#, 16MN, Q295API Welded Steel Pipe For LSAW SSAW ERW 1. Steel Pipes (LSAW) OD: ...