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.
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.spiralfastdoor.com
Pidio BDO and downstream product projects started
On March 27th, Shaanxi Pidio Chemical Co., Ltd. started to build 100,000 tons of 1,4-butanediol and its downstream products. The total investment of the project is 2.630 billion yuan, including an annual output of 100,000 tons. ,4-Butanediol, 240,000 tons of formaldehyde, 40,000 tons of acetylene, 46,000 tons of polytetrahydrofuran and 10,000 tons of γ-butyrolactone production equipment and its supporting projects, among which polytetrahydrofuran and γ-butyrol Ester new product fills the Northwest gap. After the project is completed and put into production, it is expected to realize an annual sales income of 1.94 billion yuan and a profit of 260 million yuan.