The international certification of welding enterprises is the road to international development of Chinese welding production and manufacturing enterprises. For the international certification of welding enterprises, the authorization of the international institute of welding (IIW) process obtained by the international authorization (China) welding enterprise qualification and certification committee (CANBCC) and its promotion in China are introduced. In this paper, the rail transportation, steel structure and other fields are taken as examples to discuss, through the establishment of international standard welding quality system, from the welding personnel, technology, equipment, measurement and certification, production and inspection, marking and traceability, quality record, environmental health and safety and other aspects of the whole process control from the source of the welding project to the completion report, the level of welding management, welding product quality and service are comprehensively improved to provide the premise and foundation for the welding automation, digitalization and intelligence of enterprises, so as to effectively promote the green high-quality development of welding production and manufacturing of China's equipment manufacturing industry.