Acrylo is abbreviated as propane, which is based on acrylamide and is used as an auxiliary agent such as formaldehyde, ammonium persulfate, triethanolamine, ferrous sulfate or potassium ferricyanide. In use, the oxidant and other materials are separately formulated into two solutions, and simultaneously perfused at a certain ratio. The viscosity of the condensate slurry is very low, and it can be poured into the gap that the cement slurry cannot reach, and then polymerized in the gap to become a gel and block the leakage passage. However, the strength of the propylene polymer is very low, and a certain amount of urea-formaldehyde resin can be added to form a high-strength condensate grouting material. Mainly used for anti-seepage and plugging projects.
Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.
The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).
Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.
Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).
Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.
Industrial Sectional Door,Industrial Overhead Sectional Door,Industrial Warehouse Sectional Door,Industrial Garage Interior Sectional Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffreezerdoor.com