bolt
central
clamp
communal
conduit
connector
construction
curved
day
district
energy
engineering
equipment
heat
housing
industrial
infrastructure
insulated
large
liquid
main
metal
pipe
pipeline
power
range
rusty
service
steam
steel
structure
supply
support
system
technology
transit
transmission
transportation
tube
warming
定額
Insulated heating circuit of centralized heating outdoors. Pipeline coated with galvanized sheet metal. Industrial background. Selective focus.の素材 [FY310148287043]
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