地雷/隧道通风管道(积极的压力)

Ventilation Duct (positive pressure) supply fresh air to the underground work place Material: PVC coated fabricApplication The seamless ventilation duct is widely used in the coal mine, tunnel, subway, ship-building and so on. It is ideal for BLOWER application, dedust and explosion-proof.Features→.Seamless. This ventilation duct adopts our patented one-off shaped craft, no weld seams both longitudinal and transverse, enjoy a fashionable structure and excellent quality.→New design.We design a firm twill reinforcement side strap, effectively solve the insufficient strength problem of traditional seamless products.→FR&AS,good ventilation and physical performance. Contact us for the test results.→Light weight and collapsible.