GOST 21669-76

Ductile iron fittings with parallel thread for pipelines. Locknuts. Basic dimensions

Industrial purity. Lubricating and cooling fluids. Requirements for purity of cutting fluids at external cylindrical grinding and surface grinding with the periphery of the wheel

Reprography. Micrography. Microfilm of document with the status of original. Order of manufacture, registration, storage and application

Infant milk products. Method of active acidity determination

Industrial automation systems and integration. Requirement specification for organization of interoperability

Corrosion-resistant steels and alloys. Test methods of intercrystalline corrosion resistance