We are experiencing lots of distorted or bended pipespools here in the project which were cause by excessive heating and improper sequence during welding. Example of the distorted spools we are encoutering is for 12" LTCS spools with 10.31mm thickness and length of 6meters, during measurements from end to end distortion is approximately 2 inches and above as per attached photo.

Is there any acceptance criteria for the above mention so we can decide whether to accept or reject the distorted spools since we don't have any specific requirements here in the project.