GB/T 9207-1988 Cemented carbide cylindrical ball head rotary files

GB/T 9207-1988 Carbide cylindrical ball head rotary file GB/T9207-1988 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Cylindrical round-(ball-)nose hardmetal burrs
Cylindrical round-(ball-)nose hardmetal burrs9207.88
This standard adopts the international standard IS07755/3-1984 "Cemented Carbide Burrs - Part 3: Cylindrical Ball-nose Burrs (Type C)".
1 Type and size
1.1 Type and size are as follows:
Rotary file code
C0210C03
C0313C03
C0413C0640
C0616C0640
C0820C0640
C1020C0640
C1225C0640
C1625C0640
1.2 Marking example
C0210M03
C0313M03
C0413M0640
C0616M0640
C0820M0 640
C1020M0640www.bzxz.net
C1225M0640
C1625M0640
C0210F03
C0313F03
C0413F0640
C0616F0640
C0820F0640
C1020F0640
C1225F0640
C1625F0640
（±0.5)
Carbide cylindrical ball head rotary file (type C) d=10mm, l=20mm, d,=6mm, shank length is 40mm, medium teeth (M). Approved by the State Machinery Industry Commission on May 12, 1988, and implemented on January 1, 1989.
Marked as: Rotary File C1020M0640
Technical Conditions
According to GB9217 "Carbide Rotary Files
Additional Notes:
GB9207—88
GB9207-88
Technical Conditions".
This standard was proposed by the National Technical Committee for Tool Standardization. This standard was drafted by the National Technical Committee for Tool Standardization. This standard was drafted by Chengdu Tool Research Institute and Shanghai Tool Factory.
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