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Chinese National Standard Category: Cutters

English Title: Long Straight Shank Twist Drill (D=2~13)
Chinese Title: 直柄长麻花钻(d=2~13)
Standard No.: QJ 438-1978
Category No.: V91
Issued by:
Issued on: 1980-01-01
Implemented on: 1980-1-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:
Word Count:3000 words
Similar Standards:
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