Refractory products and Silika, Electric-silika:
- Silika refractory products: GOST 4157-79
- Silika refractory products for open-hearth furnace liniking: GOST 4157-79
- Light-weight termally insulating products: GOST 3910-75
- Silika refractory products for air-preheater and blast furnace hot air ducts lining: GOST 20901-75
- Refractory products for electric furnace lining: DSTU 2343-94 (GOST 1566-96)
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