GB - Chinese national standards

Wrench openings - Tolerances for general use

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Non-destructive testing of steel products—Method for ultrasonic testing of torsional residual stress distribution of shaft

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Ferronickel—Determination of arsenic,tin,stibonium,plumbum and bismuth contents—Inductively coupled plasma-mass spectrometric methodICP-MS

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Green manufacturing—Green supply chain management in manufacturing enterprises—Implementation guide

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Green manufacturing—Green supply chain management in manufacturing enterprises—Requirements for information tracing and disclosure

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Wind energy generation systems—Operation evaluation index system for wind turbines

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Laboratory method for sampling fume and gases in welding and allied processes— Part 1: Determination of fume emission rate during arc welding and collection of fume for analysis

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Laboratory method for sampling fume and gases in welding and allied processes — Part 2: Determination of the emission rates of carbon monoxide, carbon dioxide, nitrogen monoxide and nitrogen dioxide during arc welding, cutting and gouging

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Laboratory method for sampling fume and gases in welding and allied processes—Part 3: Determination of ozone emission rate during arc welding

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Laboratory method for sampling fume and gases in welding and allied processes—Part 4: Welding consumables welding fume emission limit value

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