Oil Pipe, Prepainted Galvanized Steel Coil, Hot Rolled Steel Sheet Pile manufacturer / supplier in China, offering Stone Granules Coated Color Steel Plate Solar Roof Tiles Flat Roof Materials for House Roofing, Cold Drawn GB Carbon Steel Sch80 ASTM A106 Seamless ASTM A53-2007 GB 5310-1995 Round Steel Pipe, Precision Bright Surface Thick Wall Seamless Tube ID 4.4mm 5.4mm 5.5mm 6.3mm 6.35mm 6.8mm 8.03mmm Tube and Pipe and so on.