prEN ISO 544 焊接耗材 填充材料和焊剂的技术交付条件 产品类型、尺寸、公差和标记 (ISO/DIS 544:2024)
Welding consumables - Technical delivery conditions for filler materials and fluxes - Type of product, dimensions, tolerances and markings (ISO/DIS 544:2024)
ISO 544:2017 specifies technical delivery conditions for filler materials and fluxes for fusion welding. ISO 544:2017 does not apply to other auxiliary materials such as shielding gases.