provide steel pipe, ASTM,JIS, DIN,API 5L STEEL PIPE 1. MATERIAL: CARBON STEEL,STAINLESS ... STEEL 2. SIZE: 1/4"--24 provide steel pipe, ASTM,JIS, DIN,API 5L STEEL PIPE1. MATERIAL: CARBON STEEL,STAINLESS STEEL ... : 1/4"--24" 3. THICKNESS: STD,SCH40,80,1604. STANDARD: JIS, GB, ASME,ANSI,DIN,API 5L5. USE petroleum,chemical,power ... made under the ISO 9001:2000 strictly. steel pipe, ASTM,JIS, DIN,API 5L