... boilers, heat exchangers, super heaters, condensers, and catalytic tubes, refining furnaces etc. 1 General usage pipeProduct Description: ... : Hydraulic system, Mechanism in automation, fuel tubes for aircrafts, instrumentation Standards: ASTM/ASME A213/SA213, A269/SA269 ... Steel Grade: TP 304/304L, 316/316L, 321.Surface Type: These tubes ...