Our boiler tubes and pipes are consistently controlled, from steel-making to tube and pipe-making, in order to ensure the manufacturing of all steel grades, as well as to assure uniform and stable quality, through strict quality control during each process.

Particularly, steel-making processes, from component mixture to final heat treatment, undergo optimum quality design regarding boiler steel tubes and pipes, by putting years of experience and high engineering process to full use so that products can endure long usage periods of one or two decades. In order to bring the quality design into shape, a new refining method in steel-making is introduced and various manufacturing processes are selected according to dimensions, material properties, and internal and external surface condition.

Boiler tubes and pipes are strongly demanded in order to satisfy especially strict usage conditions, along with operational reliability. We conduct strict quality control in all processes, from steel-making to tube and pipe-making, and we have established the following quality assurance system.

1 - Independence of the quality assurance department
2 - Standardization of tasks
3 - Adoption of a inspector qualification system
4 - Full adoption of nondestructive tests
5 - Establishment of periodic gauges and tester calibration systems