Flux-cored wire is the fourth generation of advanced welding material which is developed rapidly in recent years. Compared with other welding materials, the flux-cored wire has the following advantages: high efficiency, excellent technology, little spatter, high welding quality, and convenient for automation. It is widely used in industrial developed countries. Manufacturing techniques of the flux-cored wire are: 1. Primary techniques mainly include roll forming of steel stripe, drawing, and sinking. 2. Rolling and sinking techniques are the primary. Drawing technique is used to adjust the diameter and ovality of the welding wire (applicable for the production of flux-cored wire, such as stainless steel with high fill rate and hard facing). The former is a mature manufacturing technique while the latter simply depends on roll forming and sinking. Some techniques are not perfect, and improving the production capacity encounters difficulties. Therefore, the production line of cold rolling and drawing of steel strip is the appropriate. According to requirements of the market, the company has developed flux-cored wire production lines for marine, steel structures, hard facing, and stainless steel to meet requirements of customers.