J506 electrode covering is low hydrogen potassium type, The medicated skin formula is a in the J507 recipe based on the add the appropriate amount of arc stabilizer, advanced technology from manufacturers. The electrode has a weld appearance, good arc stability, spatter, easy slag removal, moderate penetration. Especially suitable for all-position welding. Welding current is AC or DC reverse polarity, short arc welding. The weld metal has excellent crack resistance. Considerable level of the main welding electrodes strength carbon steel, low alloy steel, shipbuilding steel and pressure vessel such as 16Mn, 09Mn2Si. (High chromium cast iron electrode wear) high chromium cast iron electrode wear high hardness of surfacing layer, the Organization for granular carbide, martensite and retained austenite, can withstand the harsh conditions of high hardness abrasive wear and high stress contact fatigue wear, suitable for power plant absorption hardening of the wind turbine rotor blades, dust pump valve, mud pump impeller, dredgers and other wear parts, strengthen and repair. (High manganese steel welding electrodes) high manganese steel welding rod performed the standard of the country "GB984-85 surfacing electrode, this electrode particularly high work hardening, high hardness surfacing after HB ≥ 170, but after work hardening up to HB ≥ 450-500. For severe shock loads and metal wear work pieces such as jaw crusher, hammer, rail turnouts and high manganese steel surfacing. Molybdenum improves crack resistance and wear resistance. To post weld immediately take advantage of red hot hammer or water quenched to reduce crack. The surfacing of high manganese steel pieces first fatigue layer eradicate fray. For the manufacture and repair of die (mold welding rod) and a variety of large and medium-sized punching shear edge trimming die mold surfacing and repair. (Surfacing on steel substrate to form the die edge can replace the whole mold steel). (Molybdenum and chromium molybdenum heat-resistant steel electrode) heat-resistant steel at high temperatures, chemical stability and sufficient strength, and has eroded the ability of anti-gas. Pearlite steels, martensitic steels, ferritic steel and austenitic steels can be divided according to chemical composition and microstructure, heat-resistant steel. Pearlitic heat resistant steel and martensitic steel in electric arc welding, requires the selection of different types of welding electrodes. General were selected according to the different kinds of steel and different working temperature. Stainless steel electrode (stainless steel electrode) has good corrosion resistance and oxidation resistance, widely used in the manufacture of the chemical, petroleum, fertilizer, food, machinery, medical devices and other equipment. General welding rod selection should be the same as the base metal composition or similar, to select media and working conditions, temperature electrode. (Ductile iron electrode) used for surfacing work pressure ductile iron valve sealing surface temperature in the medium temperature of 350 ° C or below. (Cast tungsten carbide gas welding rod) cast tungsten carbide gas welding pipe components using oxygen - acetylene flame surfacing W2C and WC alloy particles 93HRA melting point of 1600-1800 degrees of hardness, high wear resistance. Suitable for oil drilling concrete mixing blades, dredging blades, high-speed sand box, charcoal, drilling wells drill, straw Tian shredder and feed grinder blade wear parts surfacing.