1, carbon steel covered electrode. This is a common welding material, which is suitable for welding carbon steel and low alloy steel materials of tailgate hinges of large trucks. Covered electrode welded carbon steel has good firmness, but poor corrosion resistance.
2, stainless steel covered electrode. This is a welding material suitable for welding stainless steel material of tailgate hinge of large trucks. It has good corrosion resistance and heat resistance, but the price is relatively high.