Hardware for doors and windowsIt has grown for nearly a decade. Over the years, door and window hardware has gradually been accepted and recognized. Door and window hardware has gradually taken a leading position in the door and window market. In the country, energy-saving windows account for over 65% of the market share. Door and window hardware can be divided into building door locks, handles, supports, hinges, hinges, door closers, handles, locks, window hooks, anti-theft chains, sensing door opening and closing devices, etc. Door and window hardware is a general term for various metal and non-metal accessories installed on building doors and windows. Assists in opening and closing doors and windows. This surface is usually electroplated or coated, sturdy, durable, flexible, economical, and aesthetically pleasing. In recent years, the utilization rate of door and window hardware has reached 90% in emerging buildings such as Shanghai, Guangzhou, and Shenzhen; Hebei region has 100% basic aluminum doors and windows and door and window hardware; Jiangsu and Zhejiang aluminum windows, 60% to 70% of doors and windows are hardware doors and windows; The proportion of subtropical regions is very small.
In the current door and window market, we can see that many enterprises have achieved the logo of door and window hardware. In many buildings, we can see hardware for doors and windows. But there are also some companies engaged in price wars. During the price war, some manufacturers use inferior PVC insulation tape as nylon tape. We know that the quality of insulation strips directly affects the quality, quantity, and service life of door and window hardware: according to standards, polyamide insulation strips (PA66 nylon strips) are used for insulation profiles, but the vast majority of insulation strips used in industrial aluminum profile factories do not meet standard requirements. Many low-quality and unknown door and window hardware profiles are priced at 2300 yuan per square meter, while real door and window hardware materials are priced at 400 yuan per square meter.
Some well-known aluminum profile factories use two types of high-quality insulation tapes. High priced aluminum is made from qualified insulation tapes, while low-cost aluminum is made from PVC plastic tapes. The tensile strength, thermal aging performance, and density of the PVC plastic tape of the present invention are significantly different from those of the polyether amine insulation tape. The strength is significantly reduced, and the weather resistance of windows is greatly reduced in extreme weather conditions such as high and low temperatures, and they are not easily detached.
