Lub Explosion-Proof Sign Exd IIB T4 Gb txhais li cas

Ex: Kos npe rau cov cuab yeej tsim los rau kev siv tawg-pov thawj;

d: Qhia meej tias cov cuab yeej yog ntawm hom flameproof explosion-proof;

II: Muab faib cov cuab yeej raws li Class II rau cov khoom siv hluav taws xob tawg;

B: Classifies the gas level as IIB;

T4: Qhia a kub pab t4, qhia tias qhov kub ntawm qhov siab tshaj plaws ntawm cov khoom siv tsis pub tshaj 135 ° C;

Gb: Sawv cev rau qib kev tiv thaiv ntawm cov khoom siv.