arc
argon arc welding
assembly
connection
construction
danger
defective weld
electrode
equipment
fire
flash
gas
helmet
hot
industry
labor
man
manual arc welding
manual welding
manufacturing
melting
metal
oil
order
pipe
pipeline
safety
semiautomatic welding
sheath
smoke
spark
specialist
steel
technological process
technology
weld inspection
weldability
welder
welding apparatus
welding wire
worker
xray
定額
A professional welder welds a pipe with a diameter of DN250 for the process pipeline and fixes the defective sections of the seam for carrying out the repair.の素材 [FY310173390775]
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