Development of Seamless Steel Pipe for XJY950 High-grade Steel Precision Wire-line Coring Drilling Pipe

The paper discusses the technical ideas of cold drawn seamless steel tube for high-grade steel precision wire-line coring drilling pipe for the application in deep and ultra-deep holes;introduces and analyzes material selection and manufacturing process optimization of XJY950 cold drawn seamless steel tube and puts forward technical advice in the drilling application.