Steel Pipes, Flange, Pipe Spool manufacturer / supplier in China, offering Spiral Welded Steel Pipe Large Diameter API 5L Spiral Welded Pipe, SSAW ASTM A252 Standard Piling Pipes Spiral Steel 20 22 24 28 72 Inch 350mm, Pipe Fittings Be PE Elbow Long/Short Radius Sch80 Elbows Stainless Steel 90 Degree and so on.