GB - Chinese national standards

Metallic material—Determination of residual stress—Hole drilling strain-gauge method

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Metallic materials—Determination of residual stress—Hole drilling strain-gage method

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Metallurgical-grade fluorsparDetermination of lead contentSolvent extraction atomic absorption spectrometric method

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Metallurgical grade fluorsparDetermination of antimony contentSolvent extraction atomic absorption spectrometric method

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Fluorspas—Determination of particle size distribution by sieving

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Multi wires of large diameter strand with high-strength and low-relaxation strand for prestressing

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Cold drawn or cold rolled precision weld steel tubes for mechanical structures

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General principles of cathodic protection in sea water

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Corrosion of metals and alloys—Black box exposure test method

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Preserved fruitsHawthorn products

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