... A501-98ASTN A519-98JIS G3441-1994JIS G3444-1994Seamless steel tubes and pipes forliquid service GB/T8163-199910, 20, ... steel tubesand pipesfor casingAPI SPEC 5CTJ55, N80APISeamless steel tubes foroil casing andtubing in oil wellsAPE SPEC 5LA, B ... -199910, 20ASTM A179, ASTM A192ASTM SA179,SA192,BS3059Seamless Steel Tubes for high pressure --Chemical fertilizer equipmentGB6479-8610, 20G, Q345, ...