... -98ASTN A519-98JIS G3441-1994JIS G3444-1994Seamless steel tubes and pipes forliquid service GB/T8163-199910, 20, Q295 ... andtubing in oil wellsAPE SPEC 5LA, B, X42APISeamles Steel Tubesand Pipes forHigh Pressure Boiler GB5310-199520G, 20MnG, 25MnG, ... -2-1997ASTM A161-94Seamless steel tubesfor petroleum crackingGB9948-8610, 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, JIS G3441-1988 Seamless Alloy Steel Pipe