GB - Chinese national standards

Enterprise standardization—Evaluation and improvement

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Geosynthetics—Plastic geocell

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Evaluation of the potential biodegradation and disintegration capability of plastic materials by the action of the specific microorganisms

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Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium—Part 1:Method by measuring the oxygen demand in a closed respirometer

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Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium—Part 2:Method by analysis of evolved carbon dioxide

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Determination of the ultimate aerobic biodegradability of plastic materials under conctrolled composting conditions—Method by analysis of evolved cabon dioxide—Part 1:General method

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Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions - Method by analysis of evolved carbon dioxide - Part 2: Gravimetric measurement of carbon dioxide evolved in a laboratory-scale test

Available languages: English, Chinese

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General terms and their definitions of thermoplastic pipes, fittings and valves

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Polyethylene pipes--Resistance to slow crack growth--Cone test method

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Thermoplastics pipes for the conveyance of fluids--Determination of resistance to rapid crack propagation (RCP)--Small-scale steady-state test(S4 test)

Available languages: English, Chinese

Available design: electronic design (pdf), Print design