機器
background
bolt
closeup
connect
connection
copyspace
dirty
engineering
equipment
fittings
flange
flanged
flanges
focus
gas
horizontal
industrial
industry
iron
joint
machinery
manhole
metal
metallic
nobody
nut
object
old
out
pipe
piping
plant
plate
pressure
pump
rod
rusty
screw
seal
stainless
steel
stud
studs
system
tank
technology
thread
tube
vessel
定額
Industry flanges joint connection with screws and bolts closeup over out of focus abstract industrial background with copyspace. Bolted screw connection, sealing connection on manhole chemical plant.の素材 [FY310181302736]
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