... 270 * L.640 Weight:5.76KG Explosion-proof sign:Ex deII B T4/T6 Explosion-proof metal halide 70WSize:dia.270 * ... , railway, steel, electric power, public security lighting and other needs, Our explosion-proof lamps are anti-explosion ,energy saving and long ... class T4-T6 group, and similar plantsExplosion-proof function: Pass the related explosion-proof of authority approval, completely according to ...