Residential Sectional Garage Door
A typical version of an overhead garage door used in the past would have been built as a one-piece panel.The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers. The door is balanced by either a torsion spring system or a pair of extension springs.A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security
• Aluminum garage doors are low-cost, light, rust-proof, and feature low-maintenance. They are prone to denting because aluminum is not strong and they are energy-inefficient since aluminum is a highly conductivematerial.
• Fiberglass and vinyl garage doors are composite units, combining a steel core behind a fiberglass or vinyl skin. They have also polyurethane insulated base sections, or other type of foam insulation. These premium doors can match steel garage doors, and be a realistic imitation of wood (namely fiberglass units), but they may be more expensive than steel units.
• Steel doors have become common and are available in a variety of sizes and styles, provide strength and security, are cost-competitive, and may have optional insulating value. Extra strength is available with two or three layers of galvanized steel with a low gauge number (23-24 gauge steel panels).
• Wood garage doors offer aesthetic appeal, but they are high-maintenance and may be expensive. Low-priced wood garage doors may warp and break easily.
Technical parameters of the nut filter part
In the hot summer, Xiao Bian reminds everyone to pay more attention to heatstroke!
   The technical parameters of the nut filter part are as follows: oil removal rate reaches 90-95%, specific gravity: 0.75g/cm3, filtration rate: 20-25m/h, water washing pressure: 0.32MPa, suspended matter removal rate: 95-98% .
The nut filter material has high hardness, wear resistance and pressure resistance, and the pressure resistance is 23.4KgF. The chemical property is stable, it is not dissolved in acid and alkali, and the adsorption and interception ability is strong. The adsorption rate is 27-50%, and the hydrophilicity is good. Anti-oil immersion, specific gravity g/cm31.25, slightly larger than water, filling specific gravity is 0.85g/cm3, easy to backwash regeneration, compared with other filter materials, it has the advantage of directly using pre-filtration water backwash, low operating cost , the backwashing intensity is low, (6.71/S. m2), and the filtering speed is fast (24-26/n). The oilfield has no significant effect on water treatment, the oil removal is up to 95%, and the oil content is reduced to less than 5mg/l.
Thank you for your attention to the shell filter, your suggestion is our motivation! 
Residential Sectional Garage Door,Automatic Metal Sectional Garage Door,Standard Lift Garage Door Drum,Polyurethane Foam Garage Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfautodoors.com