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--CONSTRUCTION:The hose consists of an inner tube, reinforcement layer,middle layer ang rubber cover.
--FEATURE:The hose body lengh decreased,the diameter increase and on the expansion state after hose enduring internal upright pressure.Under this condition,the hose accomplishes the hole sealing function.
--USEAGE:
a) suitable in coal mines for clearing dust and discharging gases
b) suitable for leakage prevention in underground engineering projects
c) suitable for tunnel and underwater injectioncast tunnel exploration
d) suitable for any other underground study
--STANDARD :HSD/QJ00.02-2003
| Type & specification | ID(mm) | OD(mm) | Hole radius (mm) | Expansion range | Working pressure on free state(Mpa)≥ | Pressure-resistance strenght of working state(Mpa) | |
| Test pressure | Bursting pressure | ||||||
| PG-19 | 19±0.5 | 35±2 | 50 | 65(+5-4) | 15 | 30 | 37.5 |
| PG-25 | 25±0.5 | 39±2 | 50 | 60(+8-2) | 6 | 12 | 16 |
| PG-32 | 32±0.5 | 48±2 | 56 | 70(+8-3) | 6 | 12 | 16 |
| PG-38 | 38±0.8 | 54±2 | 65 | 75(+8-3) | 6 | 12 | 16 |
| PG-45 | 45±0.8 | 60±2 | 75 | 80(+8-3) | 4 | 12 | 16 |
| PG-51 | 51±1 | 69±2 | 91 | 90(+8-3) | 4 | 12 | 61 |
| PG-64 | 64±1 | 80±2 | 110 | 100(+8-3) | 4 | 12 | 16 |
| PG-76 | 76±1 | 94±2 | 130 | 120(+8-2) | 2 | 6 | 12 |
Expansible rubber hose
