JB/T 7422.1-1999 This standard is a revision of JB 3719-84 "Vertical Internal Honing Machine Parameters". This standard is part of the JB/T 7422 "Vertical Honing Machine" series of standards: JB/T 7422.1-1999 Vertical internal honing machine parameters JB/T 7422.2-1999 Vertical internal honing machine precision inspection JB/T 7422- 1994 Technical conditions for vertical internal honing machines. The supporting standards for this standard are: JB/T 5603-1991 Vertical internal honing machine series model JB/T 9896-1999 Honing head parameters. This standard specifies vertical internal honing. machine parameters. This standard applies to newly designed general-purpose vertical internal honing machines. This standard was first published in 1984.