QC/T 624-2022 English PDF (QCT624-2022)

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QC/T 624-2022: Rubber plugs
QC/T 624-2022
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
CCS T 33
Replacing QC/T 624-2013
Rubber plugs
橡胶堵塞
ISSUED ON: APRIL 08, 2022
IMPLEMENTED ON: OCTOBER 01, 2022
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 6
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 Types and sizes ... 8
5 Technical requirements ... 10
6 Test method ... 10
7 Marking and packaging ... 11
8 Product numbering ... 11
Appendix A (Normative) Diameter and thickness of thin-walled holes in vehicle body
which match rubber plugs ... 12
Foreword
This document was drafted, in accordance with GB/T 1.1-2020 "Directives for
standardization - Part 1: Rules for the structure and drafting of standardizing
documents".
This document replaces QC/T 624-2013. Compared with QC/T 624-2013, the main
technical changes are as follows, except editorial changes:
- ADD type-A rubber plug specifications d = 14, d = 18, d = 22, d = 60 (see Table 1);
- ADD the d, d1 nominal value and limit deviation of type-A rubber plug (see Table
1);
- ADD the nominal values and limit deviations of a4, a5, b4, b5 of type-B rubber plug
(see Table 1);
- ADD the requirements for size inspection (see Table 3);
- ADD the EPDM materials and basic requirements (see Table 3);
- ADD the provisions on aging performance (see Table 3);
- ADD the provisions on structural requirements (see Table 3);
- ADD the combustion characteristics requirements (see Table 3);
- ADD the requirements for prohibited substances (see Table 3);
- ADD the provisions on acceptance quality limit (AQL) (see 5.4).
This document was proposed by AND shall be under the jurisdiction of the National
Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organization of this document: Automotive Engineering Research Institute of
Guangzhou Automobile Group Co., Ltd.
The main drafters of this document: Zhao Zhe, Yang Guang, Wang Wei, Kang Xun.
This standard replaces the standard previously issued as follows:
- It was first published as QC/T 624-1999 in 1999;
- It was first revised as QC/T 624-2013 in 2013;
- This is the second revision.
Rubber plugs
1 Scope
This document specifies the type and size, technical requirements, test methods of type-
A rubber plug and type-B rubber plug.
This document is applicable to the type-A rubber plugs for automobiles, which have a
diameter D0 of thin-walled circular holes ranging from 12 mm to 60 mm.
This document is applicable to the type-B rubber plugs for automobiles, which have
thin-walled rectangular holes size of 8 mm x l4 mm ~ 25 mm x 31 mm.
2 Normative references
The contents of the following documents constitute the essential provisions of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to the date is applicable to this document; for undated
references, the latest version (including all amendments) is applicable to this document.
GB/T 90.1-2002 Fasteners - Acceptance inspection
GB/T 90.2-2002 Fasteners - Marking and packaging
GB/T 531.1-2008 Rubber vulcanized or thermoplastic - Determination of
indentation hardness - Part 1: Durometer method (Shore hardness)
GB/T 3672.1-2002 Rubber - Tolerances of products - Part 1: Dimensional tolerances
GB 8410 Flammability of automotive interior materials
GB/T 30512 Requirements for prohibited substances on automobiles
HG/T 2196 Standard classification system for rubber products in automotive
application
HG/T 3090 General rules of visual quality for molded and extruded rubber products
QC/T 268 Extreme deviation for undeclared tolerance size of processing parts for
automobile cold stamping
QC/T 326 Coding rules for automotive standardized parts