適用范圍Application 1區、2區危場所. IIA、IIB、IIC類爆炸性氣體環境 Can be used Zone 1 and Zone 2 dangerous places. Can be used in IIA,IIB,IIC group explosive atmosphere. 產品特點 Features 優質碳素鋼制成,表面鍍鋅或采用不銹鋼. 螺紋規格可特制,如NPT 螺紋,公制螺紋等. 注:標注螺紋規格時應注明內外螺紋,如 CBHJ-G3/4'（內)/G1'(外)意義為一端為 外螺紋G1'. 符合GB3836-2000，IEC60079標準要求. The product is made of carbon steel adopting galvanized surface or stainless steel. Thread can be specially made,such as thread NPT,metric thread etc. Note:Please note inner and outer thread specification when noting the thread,for example:CBHJ-G3/4'(inner)G1' (outer) means:It’s one terminal is inner threa G3/4',another terminal is outer thread G1'. Suitable for GB3836-2000,IEC60079 standard request.