When left unattended, torches should be isolated by closing the gas cylinder valves, removing the valve keys and depressurising the hoses.

 
  • 當無(wú)人在場(chǎng)看管時(shí),應關(guān)閉氣體鋼瓶閥門(mén),取掉閥門(mén)扳手,由此將焊槍隔離并將軟管卸壓。
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