It is particularly important to ensure that ASTM A572 Grade 65 steel pipe has proper weldability. Most ASTM A572 Grade 65 steel pipe can be welded well if the welding operation is proper. For large section steel and high carbon and manganese grade, need to preheat and / or use low hydrogen electrode.
For ASTM A572 Grade 65 steel pipe with a minimum yield point above 450MPa and when special properties are required for weld metals, such as higher corrosion resistance, low alloy steel electrodes are usually required. For ASTM A572 Grade 65 steel pipe low alloy high strength steel sheet used in automobile industry, the carbon content is generally limited to less than 0.13% in order to obtain good spot welding performance.
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