Uses: Shock tube detonator(fire cracker) is suitable for the blasting works in coal mine or in the open pit digging tunnel where present no fire damp or coal dust. this kind of detonator cannot be affected by static and stray electrical current, high frequency radio transmissions when used. Main parameters and performances Name of product Tube material Length of tube(mm) Shock tube detonator(m) Water proof Stretch proof Period and delay time Water deep (m) Time (h) Static stretch(N) Time (min) Instantaneous shock tube detonator AL.alloy 40 2(or on requirement of users) 20 8 19.6 1 Ms delay shock tube detonator(25ms same interval) 58.62 66.70 500ms Same interval 20 period Shock tube detonator (half second delay) 53.58 4.55 same interval 10 period Shock tube detonator (s delay) 5s same interval 6period Note: Take care in handing, prohibit to be impacted violently, away from fire source and high temperature objects and should not be exposed to sunshine and rain. Winding and folding are forbidden during using.Detonatorshould tied tightly with shock tube and its explosive direction of shock tube when exploding by single detonator. Storage: It should be stored in a ventilating and dry storehouse under the original package condition. Shelf-life: 2 years. Packing: outside: Paper box Inside: plastic bag