Type)". National Standard of the People's Republic of China Oval hardmetal burrs Oval hardmetal burrs This standard refers to the international standard ISO7755/5-1984 "Hard alloy rotary files 1 Types and dimensions 1.1 Types and dimensions are as shown in the following figure and table. Rotary file codebzxz.net E0307C03 F0610C0640 F0813C0640 E1016C0640 E1220C0640 E1625C0640 1.2 Marking example E0307M03 E0610M0640 E0813M0640 E1016M0640 E1220M0640 E1625M0640 E0307F03 E0610F0640 E0813F0640 F1016F0640 E1220F0640 E1625F0640 (±0.5) 9209--88 Part 5: Oval Rotary Files (E --- 0. 03 Carbide oval rotary file (type E) d = 12mm, l = 20mm, d, = 6mm, shank length 40mm, coarse teeth (C). Marked as: rotary file E1220C0640GB9209--88Approved by the State Machinery Industry Commission on 1988-05-1256 Implemented on 1989-01-01 Technical conditions GB9209 According to the provisions of GB9217-88 "Technical conditions for carbide rotary files". Additional remarks: 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. 1441 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.