日本住友金属工业公司与有关联的住金不锈钢管公司一起，开发了新的不锈钢焊接管的制造法．通过高频预热后，用二氧化碳气体激光器焊接的管化技术．据说，即使提高加工度也能控制次品的发生率，耐腐蚀性能甚佳．已从去年年底开始，在住金不锈钢管的古河工厂进行试生产．新焊接 Sumitomo Metal Industries of Japan, together with its affiliated Sumitomo Stainless Steel Pipe Company, has developed a new stainless steel welded pipe manufacturing method. Tube technology by welding with carbon dioxide gas laser after preheating at high frequency. It is said that even if the increase in processing can control the incidence of defective products, corrosion resistance is very good. From the end of last year, trial production has been carried out in the Furukawa factory where stainless steel pipes are housed. New welding