aluminum
アルミニウム
alloy
architecture
assembly
background
bar
beam
bolt
build
builder
clamp
connected
construct
construction
coupling
details
development
durable
element
engineering
entertainment
equipment
fittings
frame
framing
girder
grip
heap
industrial
installation
installing
joined
metal
metallic
performance
pipe
pole
protection
safety
scaffold
scaffolding
screw
security
stage
steel
structure
support
truss
tube
work