Selection of welding joint coefficients
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Which standard clearly stipulates the selection of the welding joint coefficient of the head? For a pressure vessel with a 20mm steel pipe, is the welded joint coefficient 1 or 0.85?
The cylinder is a steel pipe, and the weld is only the circumferential weld between the cylinder and the head. If the welding joint coefficient is 1, does the radiographic flaw detection ratio also need to be changed to 100% flaw detection accordingly?
For a pressure vessel with a 20mm steel pipe, is the welded joint coefficient 1 or 0.85? Should be written as 1.0 (0.85)
The welded joint coefficient usually refers to the longitudinal joint. Steel pipes have no longitudinal joints, so the coefficient is 1.0.
I originally thought so, but from the 2007 provincial pressure vessel design review qualification examination question, one said that the steel pipe cylinder weld coefficient refers to the girth weld.
Most of the training in the province is misleading. A few days ago, I took a break from work and took a look at the tower training in the province that claims to be the largest in pressure vessels. There is not much that is my own, and most of them are copied from the handout of Wang Zhexiang. There are only a few errors added by the author himself but there are a lot of mistakes: L The experts in your province are really bad. They should go home and farm. At this rate, they are probably not qualified to farm at home. Why do you want to change it to 100%? You think you are making ASME equipment. Even if you are making ASME equipment, you can use uw11 (a) (5) (b) to set the header to 1.0.