... , API, BS, JIS, GB, DIN SSAW STEEL PIPE SpecificationsChina StandardSteel GradeStandardseamless steel tubesand pipesfor structural purpose GB/T8162-199910, ... -98ASTN A519-98JIS G3441-1994JIS G3444-1994Seamless steel tubes and pipes forliquid service GB/T8163-199910, 20, ... andtubing in oil wellsAPE SPEC 5LA, B, X42APISeamles Steel Tubesand Pipes forHigh Pressure Boiler GB5310-199520G, 20MnG, 25MnG, ...