JB/T 8994-1999
Inspection methods and limits of large plain workpiece sizes for large electric machinery and hydraulic turbine (English Version)
- Standard No.
- JB/T 8994-1999
- Language
- Chinese, Available in English version
- Release Date
- 1999
- Published By
- Professional Standard - Machinery
- Latest
- JB/T 8994-1999
- Scope
- This standard stipulates the acceptance limit deviation of workpiece dimensions, the selection principles of measuring instruments, the allowable measurement uncertainty of measuring instruments and the method of use. This standard is applicable to inspection of basic dimensions greater than 500 to 10000 mm. GB/T 1800.3 "Limits and Fitting Basics Part 3: Standard Tolerance and Basic Deviation Numerical Table" and JB/T 8995.1~8995.3 "Large Size Tolerances and The standard tolerances IT6~IT10 stipulated in "Coordination" have the smooth workpiece dimensions required to meet the requirements.
JB/T 8994-1999 history
- 1999 JB/T 8994-1999 Inspection methods and limits of large plain workpiece sizes for large electric machinery and hydraulic turbine
