GB/T 6078.1-1998Centre drills. Part 1: Centre drills for centre holes without protecting chamfers. Type A. Dimensions (English PDF)

GB/T 6078.1-1998 is the English-translated version of 中心钻 第1部分:不带护锥的中心钻-A型 型式和尺寸.

GB/T 6078.1-1998 is the Chinese national standard "Centre drills. Part 1: Centre drills for centre holes without protecting chamfers. Type A. Dimensions". It was issued on January 1, 1998 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, and took effect on September 1, 1999. It is obsolete: it has been replaced by GB/T 6078-2016.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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