Glasses, including for special purposes (for gas-mask, respirators etc.)
Protective glass for industry devices
ГОСТ 10958-78
Technical characteristics:
Protective glass is used for details, protecting device from dirty, mechanical damages, dust and liquid at temperature from -60oC to +60oC.
- Glass is produced with flat or spherical surface, round, figured, rectangular.
- Glass can be made on customer’s working drawing.
- Glass is manufactured with polished and unpolished surface.
- Glasses are of equal thickness.
- Coefficient of general transmission for thickness
- from 2,0 to 2,5 мм — 87%
- from 3,0 to 4,0 мм — 85%
- from 5,0 to 6,0 мм — 84%
- Protective glass is chemically stable.
Colorless glass is used for gas-masks and protective eye glasses.
ГОСТ-10377-78
Technical characteristics:
Colorless glass is used for gas-masks and protective eye glasses, preventing eyes from wind, dust, fragments, chips and splashes of non-aggressive liquids.
- Glass is round or fashioned. It is made of sheet glass.
- Light transmission coefficient is not less than:
- 0.90-for one layer gas-mask
- 0.87-for one layer glass for protective eye glasses with round and fashioned shape.
- Glass is colorless.
- Glass is mechanically strong.
- Glass is moister resistant and heat proof.
Hardened glass for protective eye glass.
ТУ 21-РСФСР-14-84
Technical characteristics
Hardened glass is applied for gas-masks and protective eye glasses, preventing eyes from wind, dust, fragments, chips and splashes of non-aggressive liquids.
- Hardened glass is produced with bent surface. Glass is hardened with ion change methods.
- Light transmission coefficient has to be not less than 0.87
- Glass is colorless.
- Glass is mechanically strong.
- Sizes (in mm) are coordinated with the customer.
Protective glass for aircraft device.
ТУ 21 РСФСР-234-84
Technical characteristics
Glass is made for protection of aircraft devices.
- Glass is produced flat and with spherical surfaces.
- Shape, size, sphere height, edge treatment type can be made on customer’s request.
Size, mm Tolerance, mm diameter thickness 3mm thickness from 3 to 5 mm up to 100 -0,5 -0,6 from 100 to 250 -0,8 -0,9 - Glasses are of equal thickness.
- General light coefficient has to be for glass not less than:
- thickness to 2 mm — 89%
- thickness 2.0-2.5 mm — 87%
- thickness 5.0-6.0 mm — 84%
- Glass is mechanically strong and thermal stable.
- Glass does not change translucent in temperature range from -60оС to +80оС.