GregoryHowell讲了管道安装工的故事，他按时按预算按要求完成了任务，只是妨碍了所有后续承包商的工作。
Gregory Howell tells the story of the pipefitter, who completes his assignment on time, within budget, and well within specification, only to encumber every downstream contractor on the job.
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。
This unit group includes plumbing and other pipefitting trade contractors who own and operate their own businesses.
为确保设备安装正确性，本安全阀安装须由有资格证书的管道承包商或维修技术人员按照说明书及其他相应规定进行。
To ensure proper operation, this valve must be installed by a qualified service technician or licensed plumbing contractor in accordance with these instructions and local plumbing codes and standards.
承包商供应的设备、管道、烟风道等必须做成容许的最大尺寸以减少现场加工和安装的工作量。
The equipment pipe and air and flue gas ducts etc. supplied by the contractor shall be made in maximum allowable dimensions to reduce the fabrication on site.
承包商供应的设备、管道、烟风道等必须做成容许的最大尺寸以减少现场加工和安装的工作量。
The equipment pipe and air and flue gas ducts etc. supplied by the contractor shall be made in maximum allowable dimensions to reduce the fabrication on site.
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