... seamless steel pipesBrand: zhongxing Technique: seamless Finish: cold drawn and hot rolled ManufacturerHenan Xinfengyi Enterprise Co., LtdBrandHenan XinfengyiTypeManufacturer & ExporterProductC, C-Mn ... and Alloy Seamless Steel PipeProcessSeamless, Cold drawn and Hot rolledMaterial20#, 10#, 45#, 35# and Q23516Mn, 27SiMn, 40Cr, 12CrMo, 15CrMo ...