The types, specifications, performance and requirements of hardware, fasteners, reinforced steel and metal plate used in plastic steel doors and windows shall comply with the relevant provisions of the current national standards. The variety, specifications and quality of the glass shall comply with the provisions of the current national product standards and have a product certificate. Tempered glass must be used for a single piece of glass larger than 1.5 m2. The specifications and models of plastic-steel windows should meet the design requirements. The quality and mechanical properties of the windows meet the requirements of the current national standards and have a factory certificate. The three basic physical properties of the window, such as wind pressure resistance, air penetration and rainwater infiltration, shall comply with the requirements and design requirements of the three performance classifications in the current national standards, and shall be accompanied by the quality inspection report of this grade. The plastic steel profiles we see are made of polychlorohexene resin as the main raw material, plus a certain proportion of stabilizers, colorants, fillers, UV absorbers, etc., after extrusion molding, and then through cutting, welding or screwing. The connection method is made into a door and window frame fan, which is equipped with a sealing strip, a top strip, a hardware, etc., and at the same time, to strengthen the rigidity of the profile, a steel lining needs to be added in the cavity of the profile exceeding a certain length.
Construction Hoist (also called Building Hoist, Passenger Hoist, Construction Material Hoist, Construction Passenger Hoist) are an efficient and safe means of transporting people and materials on construction site. They help increase productivity and safety, thereby saving time and money.
Construction hoist is vertical transport machinery driving by pinion and rack, mainly used on construction site for transportation of personal and materials. As a permanent or sub-permanent external elevator, it also applies to store house, dock, high tower, high chimney, etc. There are single cage and double cages hoist. According to the need gets rid of one cage of double cages the hoist will be changed to single cage hoist. SC construction hoist is equipped with reliable electrical and mechanical safety device. It is efficient and safety vertical transporting equipment.
BQ supplying general building hoist, VVVF speed building hoist, modern energy-saving building hoist and other types of building hoist.
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