ASTM A106 seamless square and rectangular pipes are specified for demanding applications where elevated temperatures and pressure integrity are critical:
Power Generation: Boiler tubes, superheater connections, economizer tubes
Petrochemical & Refinery: High-temperature process piping, heat exchanger headers, furnace components
Industrial Machinery: Hydraulic systems, heavy equipment frames subject to thermal stress
Heat Transfer Equipment: Radiator tubes, heat recovery systems
General High-Temperature Service: Steam lines, hot oil circulation systems