日本NKK公司在24英寸大直径电焊钢管机上采用大功率激光焊接法，开发成功可取代无缝钢管和UOE大直径钢管的超高级电焊钢管。为开拓13Cr系等油井管和管线管领域的需求，现已提供样品。该公司4年前在世界率先在24英寸大直径电焊管机上采用大功率（25KW）激光焊接机，开发成功超高 Japan NKK company in the 24-inch large-diameter welded pipe machine using high-power laser welding method, the successful development of ultra-high-precision welded steel pipe can be replaced by seamless steel tubes and UOE large diameter steel pipe. In order to explore the needs of oil well pipelines and pipelines such as 13Cr series, samples are now available. The company took the lead in the world four years ago to adopt the high-power (25KW) laser welding machine on the 24-inch large-diameter welding pipe machine to successfully develop the ultra-high