... steel pipe 2) Standard:GB,ASTM, DIN,JIS, 3) Material:10# ,20# ,35#, 15CrMo,13CrMo44,and so on. Our company ... more details of our products as follows:Alloy Seamless Steel Pipe(1) Standard: GB DIN ASTM JIS and so ... on(2) Application: The seamless steel pipe features resistance to high pressure ,hige/low tempertare and ... ,sunny zone,central north road,Tanggu Tianjin China seamless steel pipe