ASTM A572 Gr. 50 Spiral Steel Pipes 　　Model NO.: SG49 　　Technique: SAW 　　Surface Treatment: Bared, Galvanized, Oiled, Color Paint, or Other an 　　Section Shape: Round 　　Origin of Place: China 　　Length: 6-12m 　　Pipe End: Plain End or Bevelled End 　　Specification: 219-3500 　　Type: Welded 　　Material: Carbon Steel 　　Usage: Pipeline Transport, Special Purpose, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining 　　Thickness: 4mm-25mm 

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