... , heat exchangers, super heaters, condensers, and catalytic tubes, refining furnaces etc. 1 General usage pipeProduct Description: ... 2 Boiler & Heat-exchanger tubesProduct Description: Tube for boilers, heat exchangers, super heaters, condensers, and catalytic tubes, ... Description: Hydraulic system, Mechanism in automation, fuel tubes for aircrafts, instrumentation Standards: ASTM/ASME A213/SA213 ...