2.爆炸性气体混合物IIA IIB IIC环境
Can be used in Zone 1 and Zond 2 dangerous places.
Can be used in IIA,IIB IICgroup explosive atmosphere.
During wiring it is considered as one of explosion-proof part in steel pipe connection
2.高强度 重量轻 表面喷塑耐腐蚀 防腐等级;WF2
Explosion-proof Moon-shaped Bend is cast and molded with high-strength aluminum alloy
High intensity light weight surface sprayed and corrosion resistant WF2 Anticorrosive Class;WF2
Both ends are 55 degree (in British measurement)parallel pipe thread (precision of the flameproof thread;6H/6g)
Explosion-proof mark;Exs ll
When the number of joggle is at least 5 the protection class is lp65