What are the differences between GB8163, GB9948, and GB6479?
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From GB150, it seems that there is no significant difference between GB8163 and GB9948; however, the wall thickness requirements for pipes specified in GB6479 differ from those in the first two standards. Question 1: What is the difference in performance? 2 What are the differences in application scope? 3 What are the price differences? Thank you.
Find the relevant standards, first check the range of applications for each type of standard pipe, then examine the chemical composition and mechanical properties of the same pipe models under different standards, and by comparing them, you will have the answer. Generally speaking, GB9948 can be used as a substitute for pipes of the same grade specified in GB/T8163; similarly, GB6479 can be used as a substitute for pipes of the same grade specified in both GB6479 and GB/T8163.