機器
ansi
asme
background
blast
blind
boiler
carbon
coupling
design
end
equipment
exchanger
fabrication
factory
fit
flange
gas
glass
heat
heavy
hole
industrial
industry
inspection
man hole
manufacturing
material
metal
nozzle
petrochemical
pile
pipe
plant
power
preparation
pressure
process
production
refinery
repair
rust
slag
stainless
steel
stub
support
tack
tank
technology
texture
tubes
up
valve
vessel
weld
welded
welding
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