... Inlet or outlet has many kinds of modes and specifications.Thread specification can be specially designed.Suitable for GB3836-2000,IEC60079 ... 1.CBJH-3/4B means:AH explosion-proof junctino box,pipe thread G3",G3",G1",also special requirement can be made..CBJH ... -1/2Jmeans:AH explosion-proof juncton box,pipe thread G1/2",2perpendicular entries with hung cover. Main technical parametersVRated ...