Yeyiphi indawo yobungqina bokudubula eyi DIIBT4

Ukutyunjwa kwe-dIIBT4 kubhekiselele kuDidi II, Umgangatho B wokulinganisa-ubungqina bokudubula.

II	B	T4	Gb	IP64
Eyam I	IMethane	T1 450℃	Ma Izinga eliphezulu kakhulu lokhuseleko	IP64
		T2 300℃
			Mb Ukukhuselwa kwinqanaba eliphezulu
		T3 200℃
I Surface Materials	Ipropane		Ga Izinga eliphezulu kakhulu lokhuseleko
		T4 135℃
	Ethylene		Gb Ukukhuselwa kwinqanaba eliphezulu
		T5 100℃
	Ihydrogen, Iacetylene		Gc Ukhuseleko lwenqanaba ngokubanzi
		T6 85℃

Isimaphambili 'd’ Ichaza uhlobo olubiyelweyo olungatshiyo, yenzelwe ukuba nakuphi na ukudubula kwangaphakathi kuqulethwe ngaphandle kokonakalisa indawo ebiyelweyo kunye nokuthintela ukusasazeka kogqabhuko-dubulo ngaphandle.;

I-IIB ikhankanya udidi lwerhasi esetyenzisiweyo;

I-T4 ibonisa ukuba umgangatho ophezulu wemveliso ubushushu ihlala ingaphantsi kwe-130°C.