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QB/T 1221-1991 PDF English

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QB/T 1221-1991: (Bicycle Inch thread and gauges)
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QB/T 1221-1991English349 Add to Cart 3 days [Need to translate] (Bicycle Inch thread and gauges)

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Basic data

Standard ID QB/T 1221-1991 (QB/T1221-1991)
Description (Translated English) (Bicycle Inch thread and gauges)
Sector / Industry Light Industry Standard (Recommended)
Classification of Chinese Standard Y14
Word Count Estimation 10,125
Date of Issue 9/10/1991
Date of Implementation 4/1/1992
Adopted Standard ISO 1502, NEQ; ISO 6698, NEQ
Summary This standard specifies the basic tooth-inch thread bicycle on a variety of finished parts, basic dimensions, tolerances and fundamental deviations, and provides bicycle Inch thread gauge its manufacturing dimensions. This standard applies to inch thread bicycle use. Also applies to the inspection inch thread dimensions and tolerances specified in this standard with the thread gauge.

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