機器
arrangement
background
bar
bolt
building
chrome
closeup
construction
detail
engineering
equipment
factory
fasten
for sale
group
hardware
heavy
industrial
industry
iron
length
line
long
manufacturing
material
metal
metallic
metalwork
nobody
object
pattern
pile
rod
round
screw
silver
stack
stainless
steel
structure
stud
texture
thread
threaded
tighten
tool
turn
white
work