Identification of welding joint coefficient
Thread Content
1. The medium is purified natural gas, with a design pressure of 0.3 Mpa and a design temperature of 50°C. Steel pipes of grade Medium 325 are used for the cylinder. What value should be chosen as the welding joint coefficient? ( ) The reason is ( ). If gaskets are used between the cylinder and the end caps, what value should be used for the welding joint coefficient? ( ) What value should be used when the design pressure is 10 Mpa? ( ) A(1.0) B(0.9) C(0.85) D(0.8).
I chose B (the medium is explosive and internal inspection is not possible). Are A and A correct? Could you explain it? I’m still not very clear about the classification of connection coefficients. For the second question, I think the answer should be B.
For welds that are absent, use 1; for longitudinal and circumferential welds, select based on the weld type and inspection level!