welded steel pipe keyword:carbon steel pipe,carbon steel tube,seamless steel tube welded steel pipeSpecification range: OD: 1/4 "---24 " WT ... DIN, JIS and so on,Application: Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ... petroleum cracking, chemical fertilizer equipment,drawing-oil-equipment and structure purposes.Packing: Bundles, seaworthy packing Main Export Market ...