Explosion-Proof Level DII BT4 thiab DII CT4

Cov IIC classification tshaj qhov IIB classification thiab pab raws li ib tug siv rau designing hluav taws xob khoom hauv explosive tej chaw.

Qeb	Roj Classification	Cov neeg sawv cev gases	Yam tsawg kawg yog Ignition spark zog
Nyob rau hauv lub mine	Kuv	methane	0.280mJ
Factories sab nraum lub Mine	IIA	Propane	0.180mJ
	IIB	Ethylene	0.060mJ
	IIC	hydrogen	0.019mJ

Tag nrho li lub caij nplooj zeeg hauv lub T4 kub classification, Qhov twg qhov ntau pub qhov chaw kub yog capped ntawm 135°C.