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AWS A5.23/A5.23M:2007-Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
AWS A5.23/A5.23M:2007-Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
60 صفحه pdf
AWS A5.23/A5.23M:2007-Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding