Stainless steel explosion-proof flexible connecting tube the BNG stainless steel explosion-proof flexible connecting pipe BNG adaptation range: 1. Suitable for explosive gas atmospheres - Zone 1, Zone 2; (2) applies to combustible dust Zone 20, Zone 21, Zone 22; 3. Applicable in II A, II B, Ⅱ C-grade explosive gas atmospheres; 4 for mining for oil refining, storage, chemical, pharmaceutical, textile, printing and dyeing, military and military facilities, explosive hazardous environments. Main technical parameters: Ex-mark: thread ExdII Specifications: G1/2-G4 can be customized: Metric thread, NPT thread and thread size; Ordering Information: Explosion-proof mark and product structure are selected and marked in accordance with the product model one by one, if necessary, 700mm long - within - outside the G4 / 3 the threaded rubber sheath proof flexible connecting pipe products labeled BNG-700 3/4 (internal) / G3 / 4 (outer), Exd Ⅱ stainless steel explosion-proof flexible connecting pipe BNG