... out standards of GB E4303, J422. Welding Electrode E4303 (J422 welding electrodes) Specifications1. Welding Electrode E4303 has excellent welding. 2. AC ... (J)Typical380460280°C97Specification≥330≥420≥22≥27Feature:(1) E4303 Welding Electrode is carrying out standards of GB E4303, J422. (2) ... , such as ships, buildings and machinery etc.(3) This electrode is excellent in welding by AC or DC support, and ...