Pure 59 copper floor drains 纯59铜地面排水渠 ; 纯
Floor Drains and Trench Drains 地面排水管和排水沟
Floor and trench drains 地面排水管和排水沟
This factory manufactures bottle traps and floor drains.
这个工厂生产瓶型气隔和地漏。
Floor drains of the same size must be provided in case of excessive discharge.
必须提供相同通径的地漏以防过量的排放。
Floor drains in lower grade clean rooms should be fitted with traps or water seals to prevent back-flow.
低洁净级别区域的房间的地漏要有水弯或水封防止倒流。
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