What are the technical standards for glass?
Standard Number: GB / T 21492-2008
Standard Name: Glass Fiber Reinforced Plastic Pipe Jacking
Standard Status: Current
English name: Glass fiber reinforced plastics jacking pipe
Implementation date: 2008-9-1
Promulgated by the State Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee
Introduction: This standard specifies the classification and marking of glass fiber reinforced plastic pipe jackets, raw materials and connections, requirements, test methods, inspection rules, marking, packaging, transportation and storage. This standard applies to the nominal diameter of 400mm ~ 3000mm, the pressure level of 0.1Mpa ~ 1.0Mpa, stiffness level of 15000N / m 2 ~ 100000N / m 2 underground jacking construction method with GRP pipe jacking. Other nominal diameter, pressure rating, and higher stiffness grade GRP pipe jacking, can also refer to the use.
ISO 10292 "Calculation of U value (heat transfer coefficient) in building glass-hollow glass stabilized state", ISO 10293 "Determination of U value (heat transfer coefficient) in architectural glass-insulating glass in steady state - Heat flow meter method "
This standard is redrafted according to ISO 10291, ISO 10292, ISO 10293.
The U value of the insulating glass (heat transfer coefficient) is used to characterize the heat transfer performance of the insulating glass. The U value can be determined by the test thermal resistance, or it can be calculated by testing the glass emissivity.
This standard specifies three methods for calculating and measuring the U value (heat transfer coefficient) in the stable state of the insulating glass.
This standard applies to flat glass or other materials consisting of flat glass (including embossing, cast glass), coated glass or other materials. It is not applicable to insulating glass which is made of far-infrared material. The test method specified in this standard only measures the U value (heat transfer coefficient) of the central area of ??the insulating glass, regardless of the edge effect and the influence of solar radiation. The U value of the surface insulating glass can be calculated and measured with the same structure of the flat type insulating glass.
There are many standards of glass technology, I find a few for you, the specific content in the following address, you see it! More such standards you can Baidu about the "standard network" in the standard search network keywords (such as the standard number) can be found after you find the standard, you can also download to!
Standard Number: GB / T 22476-2008
Standard name: Calculation and determination of steady - state U value (heat transfer coefficient) of insulating glass
Standard Status: Current
English name: Calculation and determination of steady-state U values ??(thermal transmittance) of multiple glazing
Implementation date: 2009-6-1
Promulgated by the State Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration Committee
Content: This standard is modified using ISO 10291 "architectural glass - hollow glass stability state U value (heat transfer coefficient)" determination - protection hot plate method
