GB/T 9213-1988 Carbide 60° and 90° conical rotary files

GB/T 9213-1988 Carbide 60° and 90° conical rotary files GB/T9213-1988 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
60° and 90° cone hardmetal burrs---88
GB 9213-
This standard adopts the international standard 1SO7755/9-1984 "Hardmetal burrs-Part 9: 60° and 90° round chain burrs (J and K types)".
1 Type and size
1.1 Type and size are as shown in the figure and table below.
Rotary file code
J0302C03
J0605C0640
J1008C0640
J1210C0640
J1613C0640
K0301C03
K0603C0640
K1005C0640
K1206C0640|| tt||K1608C0640
China Gear
J0302M03
J0605M0640
J1008M0640
J1210M0640
J1613M0640
K0301M03
K0603M0640
K1005M0640
K1206M0640
K1608M0640
J0302F03
J0605F0640
J1008F0640||tt ||J1210F0640
J1613F0640
K0301F03
K0603F0640
K1005F0640||t t||K1206F0640
K1608F0640Www.bzxZ.net
Approved by the State Machinery Industry Commission on 1988-05-12 Basic
Basic pole
Scale deviation
(±0.7)13.8
（±0.5）
（±0.7)
Implemented on 1989-01-01
1.2 Marking example
GB 9213-88
Carbide 90° conical rotary file (K type) d=16mm, l=8mm, d=6mm, shank length 40mml. Fine (F) marked as: rotary file K1608F0640GB9213-882
Technical conditions
According to the provisions of GB9217--88 "Technical conditions for carbide rotary files".
Additional instructions:
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. [2
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