The extracted fumes (raw gas) for which the system is designed at a minimum:
-contain fine dust (< 1g/m3; particle size 0.1 -500 pm) with metal oxides, are oil-laden, dry I pourable to a certain extent, inflammable and capable of causing smoldering fires
-contain red-hot welding beads
細かい粉を含む(<1g/m3、粒径 0.1-500pm)金属酸化物で、石油であり、ある程度まで注ぐことができ、可燃とくすぶって火災を引き起こすことができる乾燥
赤熱溶接ビードを含む