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The standards for large glass doors and windows mainly include requirements for size, physical properties, production and processing, as well as installation and acceptance. The following is a detailed explanation of these standards:

Dimensional standards

Area definition:

 According to the reference article, glass with a single surface area exceeding 3 square meters is generally considered large glass.

Length, width, and thickness: 

When any one of the dimensions of glass exceeds 2000 millimeters in length, width, or thickness, or when the area exceeds 3 square meters, it can be considered as large glass. In addition, flat glass with a length and width less than 2000 millimeters but a thickness exceeding 12 millimeters is also defined as large glass.

Physical performance standards

Strength and safety:

Large glass must have sufficient strength and stability to withstand external forces such as wind pressure and earthquakes. For this reason, standards usually specify parameters such as glass thickness, impact resistance, and weather resistance.

Thickness selection:

 In general industry standards, glass within 2.5 square meters should use a thickness of 5mm; A glass of 2.5-8 square meters requires a thickness of 8-10mm; Glass that exceeds 8 square meters and has a height greater than 2.4 meters is considered oversized glass, and a thickness of 10-12mm should be used.

Application of safety glass:

In order to prevent accidental breakage and injury to people, the application of safety glass (such as tempered glass and laminated glass) in large glass has also received widespread attention.

Optical performance: 

The optical performance of large glass includes transparency, reflectivity, refractive index, etc., which directly affects the indoor lighting effect and visual comfort. The standard has clear requirements for parameters such as visible light transmittance, reflectance, and color difference of glass.

Thermal performance:

mainly including insulation performance and thermal insulation performance. The standard specifies parameters such as thermal conductivity coefficient and shading coefficient of glass to guide designers in selecting appropriate glass types.

Production and processing standards

Raw material selection: 

High quality raw materials are the foundation for producing high-quality large glass. The standard has clear provisions on the raw material composition and impurity content of glass.

Production process:

The production process of large glass includes multiple stages such as melting, forming, and annealing. Each step requires strict control of temperature, time, and other parameters to ensure that the internal structure and performance of the glass reach its optimal state.

Processing accuracy: 

The standard has clear requirements for the size deviation, flatness, verticality and other parameters of the glass to ensure that the large glass can be accurately and stably installed in the predetermined position.

Installation and Acceptance Standards

Installation preparation:

Before installing the large glass, it is necessary to clean, measure, and mark the installation position to ensure the smooth progress of the installation process.

Installation process:

 It should be ensured that the glass is not damaged during the installation process and relevant safety operating regulations should be followed.

Acceptance criteria:

 After installation is completed, strict acceptance is required, including checking the size, flatness, verticality and other parameters of the glass, as well as checking whether the installation quality meets the requirements.

The standards for large glass doors and windows cover multiple aspects such as size, physical properties, production and processing, installation and acceptance. These standards ensure the safety, stability, and effectiveness of large glass, meeting the usage requirements in different environments and needs. In practical applications, the selection, production, and installation of large glass should be strictly in accordance with relevant standards to ensure that its quality and performance reach the best state.