Do weld evaluations that meet NB/T47014 necessarily apply to pipelines? Are the thicknesses different?

2015-12-09View Original

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Hello everyone. Recently, when our company applied for a GC2 pipeline, some experts said that the weld assessment requirements for pressure pipelines are different from those for containers; the thickness coverage range for weld assessment in pressure pipelines is only 0.75 times? Where does this sentence come from? I searched for a long time but couldn’t find 50236; the pipe is S30408 with dimensions of 57x3.5, but our company only has data on butt welding of 6mm thick stainless steel plates. Is this sufficient?

Reply #22016-03-03

It is possible according to Table 6 in NB/T47014.

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Do weld evaluations that meet NB/T47014 necessarily apply to pipelines? Are the thicknesses different?

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