铸铁管用于给水、排水和煤气输送管线，它包括铸铁直管和管件。
The cast iron pipe is used for water supply, drainage and gas transmission pipeline.
本文介绍了石油化工企业给水排水管道工程的设计经验。
Design experience of water supply and drainage pipeline project is introduced in the paper.
给水装置的管线、头、箱及排水管道的定期检查和维修。
Check and controlling using and maintenance of equipment according to plan of equipment maintenance.
给水装置的管线、头、箱及排水管道的定期检查和维修。
Periodical inspection and maintenance of water supply system, supplying pipe, tape and tank, drain pipe.
给水装置的管线、头、箱及排水管道的定期检查和维修。
Periodical inspection and maintenance of water supply system, supplying pipe, tape and tank, drain pipe.
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