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Pipeline fittings. Deposit welding and quality control of deposited surfaces. Technical requirements

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Pipeline fittings. Patch work. Technical requirements

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Pipeline fittings. Gate valves. Procedure for strength calculation

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Pipeline fittings. Screw-type cylindrical springs. General technical specifications

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Pipeline fittings. Packing washers made of paronite and rubber. Dimensions and specifications

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Pipeline fittings. Fixed joints with cone spacers. Design and dimensions

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