(BNG) explosion-proof flexible pipe connecting pipe,explosion proof,flexible pipe. E (BNG) explosion-proof flexible pipeApplication1.Can be used in Zone 1 and ... IIA,IIB,IIC groups explosive atmosphere.FeaturesFlame-withstand,corrosion-proof,waterproof ,anti-aging,good flexibility,rigid structure,satety and ... G3803 1000400BNG-700×G41004 700500BNG-1000×G41004 1000500 (BNG) explosion-proof flexible pipe