Hard-metals bits for core exploratory drilling in medium hard. Specifications
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Diesel fuel equipment. Terms and definitions
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Bits for air drills and rotary percussive rigs. Types and basic dimensions
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Core-drilling bits for sampling barrel devices
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Turbo drills. Basic parameters and dimensions
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System of product-quality indices. Downhole hammers for drilling geological prospecting boreholes. Nomenclature of indices
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System of product-quality indices. Rock destruction tool. Nomenclature of indices
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Rolling cutter bits. Technical conditions.
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Rolling cutter bits. Technical conditions.
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Calibrators, centralizers, stabilizers. Classification, species, types and basic dimensions.
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