The supply explosion-proof electrical explosion-proof lamps, Shanghai amount giant explosion wood joints, supply explosion-proof electrical explosion-proof lamps, Shanghai amount of a giant explosion proof union, the supply of explosion-proof electrical explosion-proof lamps, Shanghai amount giant explosion-proof wood joints, BHJ series of explosion-proof wood joints (dII) Scope 1,1 and Zone 2 hazardous locations. 2, IIA, IIB, IIC class for explosive gas atmospheres. Features 1, high-quality carbon steel, zinc plated or stainless steel. 2, the thread can be specially made, such as the NPT, metric thread. Note: thread specifications should be marked to indicate the internal and external threads. Such as: the meaning of BHJ-G3 / 4 "(within) / G1 (outside) at one end female thread G3 / 4", one end of the external thread G1 ". 3, in line with GB3836-2000, IEC60079 standard requirements.