機器
alloy
aluminum
background
business
circle
coil
cold
construction
crane
factory
galvanized
gray
grey
grid
hard
hardware
heavy
industrial
industry
iron
ironworks
manufacturing
metal
metallic
metalroll
nickel
packed
pattern
person
plant
plate
processed
roll
rough
round
shaped
sheet
silver
stack
stacked
stainless
steel
stock
surface
technology
texture
tough
warehouse
zinc