hot rolled seamless steel pipe 1.thickness 1mm-100mm 2.OD 10mm-1000mm our company supply a various of seamless steel pipe,alloy seamless tube, galvanized tube,spiral steel pipe,high pressure ... and medium pressure boiler tube,structure steel pipe,chemical fertilizer pipe,line pipe,welded steel pipe,oxygen tube,precision tube,thick-walled tube and so on. hot rolled seamless steel pipe