A5.23/A5.23M
A5.23/A5.23M (Specification for Low-Alloy and High Manganese Steel Electrodes and Fluxes for Submerged Arc Welding)· AWS (米国) · 186 材料
A5.23/A5.23M (Specification for Low-Alloy and High Manganese Steel Electrodes and Fluxes for Submerged Arc Welding)· AWS (米国) · 186 材料