welding coefficient
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How should the welding coefficient for the end cap be determined? Should it be 1 or 0.85?
1.0 still requires 100% PT-I
Generally, it is the same as the welds of types A and B for the main structure; however, when the value for the main structure is 0.85, the welds on the end caps, which are formed after the panels are assembled together, also need to undergo 100% radiographic or ultrasonic inspection, with the acceptance standard being the same as that for the main structure.
This generally depends on the design requirements. In my opinion, if 1,100% RT is to be achieved, it must be Grade II
GB150.4-2011 specifies specific requirements; a coefficient of 1 means 100% RT is required. If it’s not necessary to carry out 100% RT, then that step can be omitted, as the cost of performing such inspections is very high. The standard requires 100% RT, so inspections must be conducted at 100%. If the standard does not require it, then we choose a coefficient of 0.85. . .