Steel and welding
Test items：Welding bending test、Welding impact test、Welding tensile test、Yield Strength、Tensile strength、Elongation after breaking、180 ° bending test、V-type or U-type impact test、Brinell hardness、Flattening test、Macroscopic test on welded joints、Zinc coat thickness
鄂公网安备 42018502001596号