Jinan Jinan steel doors and steel window decoration noise insulation sliding sash windows

1 steel doors and windows of the characteristics and classification of steel doors and windows mainly in PVC resin as the main raw material Gaisu PVC doors and windows has become hard to change the PVC as the main raw material of modified PVC windows and doors, also known as modified PVC plastic doors and windows due doors and windows are made of plastic material composition profiles, easily deformable plastic, steel is poor, so in the production of steel doors and windows are in plastic profiles cavity plus a steel liner. This will increase the strength of steel doors and windows, steel doors and windows to improve robustness and wind resistance. Steel doors and windows have been well received by the public of all ages. Plastic doors and windows clear lines, lively, beautiful shape, the outer surface smooth and delicate, color variety. Steel doors and windows not only looks beautiful but very good sound insulation, sealing, corrosion resistance, wind pressure and so on. 2 Since the construction window profiles variety, due to the different sections in the selection of materials, structural shapes also different, great insulation performance gap. 1) steel window frame heat transfer coefficient and structural design of window frame profiles, window frames with different structures with different insulation properties. Sash design currently choose three cavity structure, PVC plastic door frames three cavity heat transfer coefficient is 1.9W / (m? K), PVC plastic door frame heat transfer coefficient four cavity structure is 1.7 W / ( m? K). 2) thermal conductivity aluminum heat ordinary aluminum window frames with PVC plastic is 1270 times, but the proportion of occupation of a substantial portion of the metal locking aluminum frame profile cross-section through the inner and outer surfaces of small, so the insulation performance of the entire window frame reduce the impact. There thermodynamic formula to calculate the heat transfer coefficient ordinary three-chamber structure aluminum window frames in 6.2 W / (m? K). 3) thermal break aluminum heat transfer between two metal coupling corresponds to the thermal conductivity of a smaller bridge aluminum and the air gap. This profile structure design, greatly reduces the heat transfer coefficient of the window frame, the thermodynamic formula to calculate the heat transfer coefficient of aluminum windows broken bridge at 3.75 W / (m? K). Have the above data, the same as the plastic window profiles three cavity structure, the bridge aluminum, aluminum profiles ordinary thermal coefficients were: 1.9 W / (m K?), 3.75 W / (m K?), 6.2 W / (m? K). http://www.jnmczs.cn/