... /API 5L For Shipbuilding Carbon Steel Pipe 1) Size:1/8'' to 24'' 2) Standard:APL 5L,API 5CT,ASTM A106,ASTM A53 ... .NK1)Material: Carbon Steel Pipes2)Size: 1/2"-48"3)Standard: ASTM,DIN,JIS GBCARBON STEEL SEAMLESS PIPES:1) Pipe Diameter of ... or precision cold rolled steel tubes are available here 3Applicationuse for oil well, boilers, precision machines, petro-chemical, ship, structure pipe ...