国产av无码专区亚洲av毛片

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plate glass

2016-04-15 09:33:18   Source:   Click times:
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plate glass:
Flat glass, window glass, generally refers to the groove vertical lead, flatwise tensile, no groove vertical drawing and Xu method and process for the production of flat glass. According to the national standard "flat glass" (GB11614-2009) regulations, clear glass according to the nominal thickness, can be divided into 2, 3, 5, not 6, 8, 10, 12, 15, 19, 22, 25 mm twelve specifications.
Flat glass has a good perspective, the light transmission performance is good (3mm and 5mm thick colorless transparent flat glass visible light transmittance ratio were 88% and 86%). The sun nearly fever ray transmittance is higher, but the visible light set indoor wall top floor and furniture, fabrics and reflection of far infrared heat rays but effective barrier, so it can produce obvious "greenhouse effect". Colorless transparent plate glass for ultraviolet transmittance is low.
Plate glass with sound insulation and a certain insulation performance, its tensile strength is far less than the compressive strength, is a typical brittle material.
Flat glass with high chemical stability, under normal circumstances, the acid, alkali, salt and chemical reagent and gas have stronger ability to resist, but long suffering erosion media can also lead to qualitative change and destruction, such as glass weathering and moldy will lead to a reduction in the appearance of the damage and the light penetrating ability.
国产av无码专区亚洲av毛片