管道技工

例句：

1. 1. He is a professional pipe fitter with over 20 years of experience.
   他是一名拥有20多年经验的专业管道技工。
2. 2. The new pipeline project requires the expertise of a skilled pipe fitter.
   新管道项目需要一位熟练的管道技工的专业知识。
3. 3. The pipe fitter was responsible for installing the new valves in the pipeline.
   这位管道技工负责安装新阀门，以改进管道系统。