... 1045 or 080M46 in JIS,C45 in DIN. 4.40 Cr 5Stainless Steel304 6 Titanium alloy The non-sparking safety ... scope is:Petroleum refining and petrochemical industry, coal, oil, natural gas chemical industry, powder industry, chemical fiber industry, paint industry, ... beryllium copper alloy explosion-proof tool for refineries to switch gas stations, gas production plants, drilling crew and so on. TRADE FAIR ...