(BNG) explosion-proof flexible pipe connecting pipe,explosion proof,flexible pipe. E (BNG) explosion-proof flexible pipeApplication1.Can be used in Zone 1 and Zone 2 ... /4",another terminal is outer thread G1",rubber sleeve flexible connecting pipe.Suitable for GB3836-2000,IEC60079 standard request.Main technical ... 1000400BNG-700×G41004 700500BNG-1000×G41004 1000500 (BNG) explosion-proof flexible pipe