boiler water blow-down pipe

attempering water pipe

bamboo water pipe

blow-down water

blow-down water tunnel

boiler feed water pipe

bottom cooling water-pipe

cast iron water pipe

Chilled water pipe

Chinese water pipe

Circulating Cooling Water Pipe

circulating pump water pipe

Circulating Water Pipe

Cooling Water Pipe

cracking of water pipe

deep water pipe well

Distributed water pipe

diversion of water pipe

down water operation

drill water pipe