焊工考试 meaning in Chinese

welder qualification test

Rule of examination for submarine hull structrue welder
潜艇船体结构焊工考试规则
Regulations for the qualification test of diver - welders
潜水焊工考试规则
Rules for the qualification of welders for marin aluminium alloy
船用铝合金焊工考试规则
Specification for approval testing of welders when welding procedure approval is not required - fusion welding of steel
不要求批准焊接程序的焊工考试规范.第1部分:钢熔焊
4 weld tank 5 flange design and optimization 6 welded tank chinese standard , api 620 , api 650
Jb4708 - 2000 jb4709 - 2000锅炉压力容器压力管道焊工考试与管理规则等相关的标准，针对于该标

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