Allotype Seamless steel pipe- Heat Exchange with Bellows,Spiral groove pipes

GB 150----------ChinaNational Standard
GB 151----------China National Standard
GB 699----------China National Standard
GB/T14976------China National Standard
GB/T8163------- China National Standard
GB 13296--------China National Standard
TD/GG2026------ Companies Standard


Used in petrochemical industry, heatconverter

The main production steel grades:
102020G1Cr18Ni9Ti0Cr18Ni909CrMoAl07Cr2AlMo etc.

Chemical composition, mechanical properties:

Refer to the appropriate national standards or foreignstandards.