6.4.1 Welding material(1) The manual welding electrode shall be of the grades in GB/T 5117Carbon Steel Covered Electrodes, GB/T 5118 Low Alloy SteelElectrode and GB/T 983 Stainless Steel Electrode which shall matchthe mechanical performance of base metal. (共 2149 字) [閱讀本文] >>


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