Welding manufacturing is a commonly used process in a variety of industries and countries. Nowadays, in industrially advanced countries, like the US and European countries, increasing the robotic and mechanized level of the welding production line and decreasing human labor is the trend in order to lower production costs. In the newly industrialized countries, manual welding is still widely employed. The increasing quality requirements and costs call for less repair work and manufacturing waste from manual welding workshops and factories in the future. To understanding how different human, social, and performance factors during manual welding production influence the welding quality and cost is especially significant to the companies in the newly industrialized countries. The Gephi software provides a possible visualization environment to observe the relationships among the different factors in welding manufacturing processes. By using the information by interviews, field visits, and discussions in the case companies, the Gephi software can reveal the relationships among the factors. The aim of this study is to find the direct visual image of the relationships among the different factors and five welding works. The result provides the foundation for future detailed analyses and it contributes to improve the working environment and management strategy in welding industries.