N the act or process of bending, cutting to length, and joining pipes 管道修理
N the branch of plumbing involving this 管道配件
This unit group includes plumbing and other pipefitting trade contractors who own and operate their own businesses.
此单元组包括管道和其他管道安装行业承包商，其拥有并经营自己的企业。
Industrial mechanics and mill wrights may be cross-trained in a second trade such as pipefitting, welding, machining or electrical maintenance.
工业机械师和维修工在第二行业中可以交叉培训，如管件，焊接，机械加工或电器维修。
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