Russian standards PDF
Agricultural machinery. Forage harvesting machines. Test methods
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Pipeline valves. Butterfly valves of thermoplastics materials. General specifications
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Pipeline valves. Gate valves of thermoplastics materials. General specifications
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Pipeline valves. Diaphragm valves of thermoplastics materials. General specifications
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Pipeline valves. Check valves of thermoplastics materials. General specifications
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Pipeline valves. Ball valves of thermoplastics materials. General specifications
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