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Ductile iron and steel fittings with parallel thread for pipelines. Union passage elbows. Basic dimensions
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Ductile iron and steel fittings with parallel thread for pipelines. Transition tees. Basic dimensions
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Ductile iron fittings with parallel thread for pipelines. Connection nuts. Basic dimensions
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Unified system of corrosion and ageing protection. Organic-silicate coatings. Technical requirements and methods of tests
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Unified system of corrosion and ageing protection. Metals and alloys. Tests for corrosion cracking of specimens under uniaxial tension
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