In charge of Chemical, Mechanical and welding Lab, take the responsibilities of the accuracy of testing data, root cause analysis, administration management.
掌管化学、力学、焊接实验室，负责日常试验结果的正确性、准确性，对异常结果的分析及日常行政管理。
2
Welding electrodes and wires shall have chemical compositions and mechanical properties equal to or of higher grade than the base material.
焊条及焊丝的化学成分及机械性能应同母材的等级相同或更高。
3
Al - alloys have special requirements on MIG welding due to their unique physical and chemical properties.