【化】 管道系统; 管网

板的钢筋网绑扎与基础相同,但应注意板上部的负筋,要防止被踩下.

pipe elbow, duct bend

British Standard Pipe Thread

letter lock for pipe switch

pedal for pipe switch

swing pipe

pipe fracturing before pipe replacing

syphon(pipe,tube)

stainless steel pipe【材】;stainless steel tube【材】