GB/T 9210-1988 Carbide curved round head rotary files

GB/T 9210-1988 Carbide curved round head rotary file GB/T9210-1988 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Archround-(ball-)nosehardmetalburrs921088
This standard adopts the international standard ISO7755/6--1984 "Hardened Carbide Rotary Files--Part 6: Archround-(ball-)nose Rotary Files (Type F)".
1 Type and size
Type and size are as follows:
Rotary file codewww.bzxz.net
F0313C03
F0618C0640
F1020C0640
F1225C0640
F0313M03
F0618M0640
F1020M0640
F1225M0640
F0313F03
F0618F0640
F1020F0640
F1225F0640
Note: 1) The cutting length may include a cylindrical portion. 1.2 Marking example
Carbide round head rotary file (F type) d=3mm, l-=13mm, d,=3mm, medium tooth (M). Marked as: F0313M03 GB 9210---88
Approved by the National Machinery Industry Commission on 1988-05-12
Implementation on 1989-01-01
2 Technical conditions
According to the provisions of GB9217---88 "Additional instructions for carbide rotary files:
GB9210
Technical conditions".
This standard is proposed by the National Technical Committee for Tool Standardization. This standard is under the jurisdiction of the National Technical Committee for Tool Standardization. This standard was drafted by Chengdu Tool Research Institute and Shanghai Tool Factory. 146
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