1977

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OST 3-3991-77
OST 3-3991-77
Optical Materials. Symbol system.
OST 3-3992-77
OST 3-3992-77
Barium fluoride optical crystals. Specifications.
OST 3-3995-77
OST 3-3995-77
Polarized moisture-resistant film. Specification.
OST 3-3996-77
OST 3-3996-77
Amateur cameras. Test method for light impermeability
OST 3-3998-77
OST 3-3998-77
Sighting eyepieces for utility measuring microscopes. Main parameters and connection dimensions.
OST 3-3999-77
OST 3-3999-77
Lenses for universal measuring microscopes. Main parameters and connection dimensions.
OST 34.42.319-77
OST 34.42.319-77
Parts and components for dust-gas-air ducts of thermal power plants. Trapdoor 500x600 for flat surfaces. Construction and dimensions.
OST 34.42.320-77
OST 34.42.320-77
Parts and components for dust-gas-air ducts of thermal power plants. Trapdoor 500x600 for cylindrical surfaces. Construction and dimensions.
OST 34.42.321-77
OST 34.42.321-77
Parts and components for dust-gas-air ducts of thermal power plants. Poking door with diameter of 150 mm. Construction and dimensions.
OST 34.42.322-77
OST 34.42.322-77
Parts and components for dust-gas-air ducts of thermal power plants. Poking door with diameter of 150 mm and a nipple. Construction and dimensions.
OST 34.42.323-77
OST 34.42.323-77
Parts and components for dust-gas-air ducts of thermal power plants. Hatch for blowing of dust ducts. Construction and dimensions.
OST 34.42.353-77
OST 34.42.353-77
Rolled ferrous metal and pipe products for production of auxiliary boiler equipment and pipelines. Restrictive dimensions.
OST 3-4000-77
OST 3-4000-77
Optical glass. Double refraction under physical treatment.
OST 3-4001-77
OST 3-4001-77
Welded joints. General technical requirements and testing methods.
OST 3-4010-77
OST 3-4010-77
Glass-graphite receptacles with a pyrocarbon coating. Types, sizes and technical requirements
OST 3-4012-77
OST 3-4012-77
Low-voltage rectifiers for training simulators. Types, basic parameters, construction and dimensions.
OST 3-4019-77
OST 3-4019-77
Titanium details. General technical requirements for the choice of rational pairs of sliding friction.
OST 34-42-319-77
OST 34-42-319-77
Parts and components of dust and air ducts of thermal power plants. Laz 500x600 to flat surfaces. Design and dimensions
OST 34-42-320-77
OST 34-42-320-77
Parts and components of dust and air ducts of thermal power plants. Laz 500x600 to cylindrical surfaces. Design and dimensions
OST 34-42-321-77
OST 34-42-321-77
Parts and components of dust and air ducts of thermal power plants. The hatch is shurovochny with a diameter of 150 mm. Design and dimensions

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