管道龍頭需求(直徑 48” — 144”)
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管道龍頭需求(直徑 48” — 144”)
規格
The taps should be located in the longest unobstructed section of straight pipe available and easily accessible, and at positions a minimum of 8-10 pipe diameters from any upstream interference and 4-5 pipe diameters from any downstream interference.可用的文檔語言