Q341F-25C DN150 ball valve outside the surface welding marks, I do not know whether it conforms to the manufacturing standards, please Tongren answer, thank you!
First of all, to determine whether the welding site after welding heat treatment. Generally, after heat treatment, there is no problem.In addition, we need to check the length of the weld and the area of the weld, and compare it with the standard of casting inspection (JB/T 7927, valve, cast steel, appearance, quality requirement).
In addition, we need to check the length of the weld and the area of the weld, and compare it with the standard of casting inspection (JB/T 7927, valve, cast steel, appearance, quality requirement).
First of all, to determine whether the welding site after welding heat treatment. Generally, after heat treatment, there is no problem.
