When the accuracy of the setting-out and numbering of the processed parts is inaccurate, how do we analyze it? The setting-out and cutting-out are not carried out according to the specified process; measures to solve the problem.
It can be setting-out, and a steel ruler that has been calibrated and calibrated should be used. And the welding shrinkage allowance should be flowed out, and the numbering must be the same steel ruler or sample rod as the setting-out. Leave processing allowances for cutting, planing and washing. Cutting. And strictly calculate. The cutting accuracy value. The operation must be accurate.
Acceptance must implement responsibilities and carefully check the straightness of the parts. The grooves, angles and gaps must meet the design requirements