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Database: 189759 (26 Oct 2025)
QB/T 1721-1993 English PDF
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QB/T 1721-1993
: Full gearcases and chain covers for bicycles
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QB/T 1721-1993
English
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Full gearcases and chain covers for bicycles
QB/T 1721-1993
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Basic data
Standard ID
QB/T 1721-1993 (QB/T1721-1993)
Description (Translated English)
Full gearcases and chain covers for bicycles
Sector / Industry
Light Industry Standard (Recommended)
Classification of Chinese Standard
Y14
Word Count Estimation
10,170
Date of Issue
4/15/1993
Date of Implementation
12/1/1993
Regulation (derived from)
Industry-Science (2010) No.77
Summary
This standard specifies the bicycle chain guard (hereinafter referred to as "chain guard") product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage. This standard applies to QB 1714 "naming and bike model preparation methods" under the general bicycle chain cover.
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