Can set various sizes junction box, are available from stock, the price please contact the seller. Are genuine welcome. Features: ◆ The products are in strict accordance with the "use of electrical equipment for explosive gas atmospheres" standard and other related standards, safe and reliable operation in explosive hazardous areas. ◆ shell material and cast aluminum die-casting aluminum products ◆ two kinds of shell surface electrostatic spray, zinc coated steel products ◆ structure forms to meet a variety of on-site wiring needs ◆ BHC explosion threading stainless steel exposed fasteners Box adapt to the environment: ◆ Suitable for explosive gas atmospheres 1 and Zone 2; explosive environment ◆ mining for oil refining, storage, chemical, pharmaceutical, military and military facilities; ◆ apply ⅡA, ⅡB, IIC grade explosive gas atmospheres . BHC explosion threading box Technical parameters: Standard GB3836.1, GB3836.3, IEC60079 proof mark Exe II corrosion protection IP55 rating WF