... carbon steel pipe fitting Application: Fluid pipeAll the production process are made under the ISO9001:2000 strictly.tube 1)Standard:ASTM B36 ... /3457, DIN2448,24582)Typebutt welding ,socket welding, forged3) Size:Seamless,1/2"--24"(DN15--DN600);welded ,6"-48"(DN150-DN1200),4 ... )Wall thickness2mm-60mm10)useWidely used in oil, chemical industry, electric power, shipping industry and other pipes projects