With inner diameter of Ф100 steel pipe, 5 thick steel plate made of water stop steel sleeve, both ends of the water stop bushing made of trumpet, trumpet protruding wall (floor) surface of about 20mm. Casing and cable filled with oil immersed hemp Silk, and add an epoxy plugging material outside the oil immersed hemp (electric practices, note the point of acceptance of power), or in the outer ring of 100 ~ 150mm (from the nozzle inward size) using waterproof cement to plug, Pressure injection plastic waterproof expansion agent, has reached the anti-seepage effect. Cable protection tube fixed point spacing of 1.5m, fixed point and wall surface distance of 250mm. Aluminum Alloy High Speed Door Aluminum High Speed Door, Hard High Speed Door, High Speed Spiral Door, turbine hard fast shutter door, automatic sliding door SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , http://www.hongfahsrud.com