JB/T 2858.1-1999 This standard is a revision of JB 2825-80 "Thread Grinding Machine Parameters". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard is part of the JB/T 2858 "Thread Grinding Machine" series of standards, which includes the following four parts: JB/T 2858.1-1999 Thread Grinding Machine Parameters JB/T 2858.2-1999 Thread Grinding Machine Series JB/T 2858.3-1999 Thread Grinding Machine Accuracy Inspection JB/T 2858.4-1999 Thread Grinding Machine Technical Conditions This standard specifies the parameters of thread grinding machines. This standard is applicable to newly designed thread grinders with movable table and movable grinding wheel frame, universal thread grinders, screw grinders and worm grinders. This standard was first issued in July 1980. JB/T 2858.1-1999 Thread Grinding Machine Parameters JB/T2858.1-1999 Standard Download Decompression Password: www.bzxz.net