The difference between GB / T8162 seamless pipe and GB / t8163 seamless pipe for structure: GB / T8162 seamless pipe for structure is applicable to seamless pipe for general structure and mechanical structure, and GB / t8163 seamless pipe for fluid conveying is applicable to general seamless pipe for fluid conveying. The main difference between GB / T8162 and GB / t8163 is that GB / t8163 seamless pipes are subject to hydraulic test or ultrasonic, eddy current and magnetic flux leakage testing one by one. Therefore, GB / T8162 standard should not be adopted for the selection of steel pipe standards for pressure pipelines.
In fact, the manufacturing of the two seamless steel pipes is the same. 8162 and 8163 are mainly different in inspection and supervision.
GB / T8162 seamless pipes for structures only guarantee the strength and rigidity of steel pipes, while GB / t8163 seamless pipes for conveying fluids requires that the sealing property be ensured in addition to the strength and rigidity that meet the requirements. Therefore, seamless pipes for conveying fluids requires that the water pressure test be carried out one by one. Seamless pipes for conveying fluids should be selected for carbon steel pipes for pressure pipes, and seamless pipes for conveying fluids should not be selected. However, in GB / T8162, seamless steel pipes for structures are generally subject to impact test. GB / T8162 standard is not suitable for the selection of steel pipes for pressure pipes, but seamless steel pipes for fluid transmission can be used in the structure instead of structural seamless steel pipes.
Post time: Sep-13-2022