GB/T 21282-2007 PDF English
US$125.00 · In stock · Download in 9 secondsGB/T 21282-2007: Rubber/plastics weatherstrip for automobile Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 21282-2007 | English | 125 |
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GB/T 21282-2007: Rubber/plastics weatherstrip for automobile---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21282-2007
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.140.99
G 47
Rubber/plastics weatherstrip for automobile
Issued on. DECEMBER 13, 2007
Implemented on. JULY 1, 2008
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Requirements... 6
4 Test methods... 11
5 Inspection rules... 15
6 Marking, packaging, transportation and storage... 18
Annex A (Normative) Method of test for the heat loss of PVC materials... 19
Annex B (Normative) Method of test for the wear resistance of weatherstrips
... 20
Annex C (Normative) Method of test for the friction coefficient of
weatherstrips... 23
Annex D (Normative) Method of test for the breaking tenacity of solid rubber
and cellular rubber of weatherstrips... 26
Foreword
Annex A, Annex B, Annex C and Annex D of this Standard are normative.
This Standard was proposed by the China Petroleum and Chemical Industry
Association.
This Standard shall be under the jurisdiction of Subcommittee on Rubber
Miscellaneous Goods of National Technical Committee on Rubber and Rubber
Products.
The drafting organizations of this Standard. SAIC-METZELER Sealing Systems Co.,
Ltd., Beijing Wanyuan-GDX Automobile Sealing Products Co., Ltd., Hongyang Sealing
Systems Company of Guizhou Guihang Automobile Components Co., Ltd., Tianjin
Xingguang Rubber/Plastics Co., Ltd., Chongqing Jiaxuan Automobile Sealing Systems
Co., Ltd., Xiamen Baiji Sealing Materials Co., Ltd., Hubei Nuoke Rubber/Plastics
Sealing Technology Co., Ltd.
The main drafters of this Standard. Chen Haiyan, Wang Xinhui, Chen Jie, Chen Daye,
Deng Mingxiang, He Wenbing, You Jianfeng.
This Standard was made for the first time.
Rubber/plastics weatherstrip for automobile
1 Scope
This Standard specifies the requirements, test methods, inspection rules and marking,
packaging, transportation and storage of rubber/plastics weatherstrips for automobile
(hereinafter referred to as weatherstrips).
This Standard applies to weatherstrips for passenger vehicles, which are made using
rubber, plastics or rubber-plastics compounds as main materials. It can be used for
reference for rubber/plastics weatherstrips for commercial vehicles.
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrigenda) or revisions do not apply to this Standard, however, parties who
reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 528-1998, Rubber, vulcanized or thermoplastic – Determination of tensile
stress-strain properties (eqv ISO 37.1994)
GB/T 529-1999, Rubber, vulcanized or thermoplastic – Determination of tear
strength (Trouser, angle and crescent test pieces) (eqv ISO 34-1.1994)
GB/T 531-1999, Rubber - Determination of indentation hardness by means of
pocket hardness meters (idt ISO 7619.1986)
3 Requirements
3.1 Dimensions and tolerances
The cross-section shapes, dimensions and tolerances of products, and the lengths and
tolerances of products shall be as required by design drawings; if it is not explicitly
specified in drawings, the supplier and the purchaser shall choose and use in
accordance with the classes specified in GB/T 3672.1.
3.2 Appearance quality
The appearance quality of weatherstrips shall be as specified.
3.3 Performance requirements for materials
The matrix materials of weatherstrips can be based on EPDM, PVC and TPE, whose
performance requirements shall be as specified in Tables 1 ~ 4.The performance
requirements for other matrix materials shall be as agreed by the supplier and the
purchaser.
4 Test methods
4.1 Measurement of dimensions
4.2 Appearance measurement
Use the visual inspection method for examination.
4.3 Material performance test methods
4.3.1 The determination of the hardness of rubber materials shall be carried out using
the method specified in GB/T 531-1999; the determination of the hardness of plastic
and TPE materials shall be carried out using the method specified in GB/T 2411-
1980(1989).
4.4 Performance test methods of finished products
4.4.1 Quantity of test specimens
Unless specified otherwise, three test specimens shall be cut out from different finished
products which shall be of the length required by the test.
4.4.2 Corner binding force (joint breaking tenacity) test
4.4.3 The test of the wear resistance shall be carried out using the method specified
in Annex B.
5 Inspection rules
5.1 Inspection classification
5.1.1 The inspection of weatherstrips include exit-factory inspection and type
inspection. For the detailed inspection items see Table 10.
5.2 Batching, sampling plans and criteria
5.2.1 Batching
The basal materials and finished products of weatherstrips shall be subjected to
inspection by batch. Materials of the same type and the same production lot constitute
a batch of basal materials.
5.2.2 Sampling plans and criteria
5.2.2.1 Exit-factory inspection
5.2.2.2.2 In normal production, the appearance quality, sectional shapes and
dimensions and product length shall be subjected to inspection by batch; if it is a fail,
then the batch of products is rejected.
5.2.2.2.3 The corner binding force (joint breaking tenacity), compression load, insertion
force and pullout force of finished products shall be subjected to inspection by batch;
the wear resistance shall be subjected to inspection once a month;
6 Marking, packaging, transportation and storage
6.1 Marking
6.1.1 The marking content on finished products shall be as required by the user.
6.1.2 Product certificate
Each independent package shall be provided with a certificate of conformity, indicating
product name, product logo, trademark, manufacturer name and address, manufacture
date, standard number and inspector signature.
6.2 The packaging, transportation and storage of products shall be as specified in GB/T
5721; the special requirements can be as agreed by the supplier and the purchaser.
6.3 When the requirements of 6.2 of this Standard are met, the storage period of
products is two years.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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