Requirements regarding weld width

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Requirements regarding weld width: 1. NB/T 47015-2011 \"Welding Code for Pressure Vessels\", 4.7.2 d) Technical requirements for welding repairs: 4) The maximum width of the weld bead shall be 4 times the diameter of the welding electrode core. 2. RCC-M 2007 Volume IV Part S 2.1. S7400 Execution of welds on products; S7314 General requirements: For load-bearing welds, narrow bead welding is recommended (the swing range of the electrode should not exceed three times the diameter of the electrode core). 3. Other relevant points: European standards for high-end products in the field of offshore engineering impose restrictions, such as EEMUA 158, which specifies a requirement of 4 times the diameter of the electrode core ； AWS D1.1 Chapter 3, the chapter exempt from evaluation – limit on weld width for FCAW: 16 mm ； European standard BS EN 1101-2: When performing manual metal arc welding with swaying, the amplitude of swaying shall not exceed 3 times the diameter of the electrode core. 4. ASME BPVC SEC.Ⅰ-2017, PW-40.3.4: The width of the weld bead produced by any electrode shall not exceed 4 times the diameter of that electrode.