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GB/T 1702-2017: Cycle tyres Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 1702: Historical versions
Similar standardsGB/T 1702-2017: Cycle tyres---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/GBT1702-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.160.10 G 41 Replacing GB/T 1702-2008 Cycle tyres Issued on. JULY 12, 2017 Implemented on. JUNE 01, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Illustration of types... 6 5 Requirements... 7 6 Test methods... 9 7 Marking, packaging, transport and storage... 13 8 Others... 13 Appendix A (Normative) Appearance quality requirements... 14 Appendix B (Normative) Fracturing evaluation method... 16 Appendix C (Normative) Transport and storage... 17ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 1702-2008 “Cycle tires”. As compared with GB/T 1702-2008, the main technical changes are as follows. - MODIFY the various types of illustrations for a more complete cross- sectional view of the tire components (SEE Clause 4; Clause 4 of the 2008 version); - MODIFY the item 3 in “Table 1 Tire performance”, changing “non-black tire sidewall resistance to ozone aging” into “sidewall rubber resistance to ozone aging”; MODIFY this performance index “Within fracturing C-2 as specified in Appendix D” into “the fracturing degree does not exceed the C- 2 as specified in Appendix D” (SEE 5.3; clause 5.3 of 2008 version); - MODIFY the item 5 in “Table 1 Tire performance”, changing the “tension strength of bead ring / KN” into “tensile strength of bead ring / KN”, and changing the “straight edge, hooked edge and hooked straight edge tire” in this performance indicator column into “the tire using steel wire or fiber material as the bead ring” (SEE 5.3; clause 5.3 of 2008 version); - MODIFY the item 6 and item 7 in the “Table 1 Tire performance”, CHANGE the test result unit of the cord fabric tensile strength and adhesive strength from kN/m into N/mm (SEE 5.3; clause 5.3 of 2008 version); - MODIFY the footnote “a” of Table 1, changing the tread wear test stroke from 1.6 km to 1.61 km (SEE 5.3; clause 5.3 of the 2008 version); - In the preparation of tread wear test specimens, MODIFY the “the cut specimen is ground on a grinding wheel to a thickness of 2.0 mm ± 0.2 mm” into “the thickness of the cut specimen is 2.0 mm ± 0.2 mm” [see b) of 6.3.2; clause6.3.2.2 of 2008 version]; - In the cord tensile strength test, MODIFY the “use of cord tension tester, canvas tension tester or rubber tension tester” into the “use of tension tester” (SEE 6.7; clause 6.7 of 2008 version); - In the adhesion strength test between tread rubber and fabric layer, MODIFY the “use rubber tension tester’s fixture to clamp the specimen” into the “use the tension tester’s fixture to clamp the specimen” (SEE 6.8.1; clause 6.8.1 of 2008 version); - ADD the tubeless tire markings and tire direction markings (SEE 7.1; clause 7.1 of 2008 version); - ADD the appearance defects of non-clear inner tube marking and the allowable range of various defects in “Table A.1 Tire appearance quality”, and the footnote “b” to the “non-conformity classification” (SEE Appendix A; Appendix C of 2008 version); - DELETE the provisions that “in the storage conditions, the storage period from the date of exit-factory does not exceed 1 year” (SEE E.2.5 of 2008 version). This standard was proposed by the China Petrochemical and Chemical Industry Federation. This standard shall be under the jurisdiction of the National Tire Rim Standardization Technical Committee (SAC/TC 19). Drafting organizations of this standard. Zhongce Rubber Group Co., Ltd., Xiamen Zhengxin Rubber Industry Co., Ltd., Jiantai Rubber (Shenzhen) Co., Ltd., Jiangsu Feichi Co., Ltd., Sichuan Yuanxing Rubber Co., Ltd., Xindongyue Group Co., Ltd., Tianjin Wanda Tire Group Co., Ltd., Guangzhou Feixuan Rubber Co., Ltd., Bengbu INNOVA Tire Co., Ltd., Hebei Xiemei Rubber Products Co., Ltd. The main drafters of this standard. Wang Jirong, Luo Nailiang, Xu Min, Cai Yingyu, Yan Yongzhi, Yang Xueyun, Chen Qingsong, Ding Xinghai, Zhang Guangfu, Xuan Zhaomin, Yu Zhenjiang, Huang Yaopeng, Ni Qianxiang, Gao Xi’en. This Standard replaces the standard previously issued as follows. - GB 1702-1979, GB 1702-1986, GB/T 1702-1992, GB/T 1702-1997, GB/T 1702-2008. Cycle tyres1 ScopeThis standard specifies the terms and definitions, types, requirements, test methods, markings, packaging, transportation, and storage of the cycle tires This standard applies to pneumatic tires specified in GB/T 7377. This standard does not apply to tubular racing tires and non-pneumatic tires.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties GB/T 1689 Rubber vulcanized - Determination of abrasion resistance (Akron machine) GB/T 2941 Rubber - General procedures for preparing and conditioning test pieces for physical test methods GB/T 6326 Tyre - Terms and definitions3 Terms and definitionsThe terms and definitions defined in GB/T 6326 and the following apply to this document. 3.1 Non-weighted type The tire which has a tire load less than 120 kg is non-weighted tire.4 Illustration of types4.1 The straight-side (SS) tire is shown in Figure 1a). 4.2 The hooked-side (HB) tire is shown in Figure 1b). 4.3 The soft-side (BE) tire is shown in Figure 1c).5 Requirements5.1 Tire specifications, basic parameters and major dimensions The specifications, basic parameters, and major dimensions of the tire shall meet the requirements of GB/T 7377. 5.2 Appearance Tires are installed on rims that meet the requirements of GB/T 7377 or agreed between the supplier and the purchaser. There must be no visible oscillation during visual inspection. 5.3 Performance Tire performance shall meet the requirements of Table 1.6 Test methods6.1 Determination of basic parameters and major dimensions of tire Tests for the basic parameters and major dimensions of the tires are carried out in accordance with the provisions of HG/T 2906. 6.2 Tread rubber tensile test 6.2.1 Test is performed in accordance with the provisions of GB/T 528, and the type 2 cutter is used. 6.3 Tread rubber wear test 6.3.1 Determination of cycle tire tread rubber wear is performed in accordance with the provisions of GB/T 1689. 6.3.2 The sample preparation is as follows. 6.3.3 The tread rubber specimen crown rubber is ground surface. 6.3.4 If it is difficult to take sample, it can be tested by preparing the tread rubber into standard specimen in accordance with GB/T 2941. 6.4 Sidewall ozone aging resistance test 6.5 Tire lug bending test From the tested tire, CUT a 100 mm long tire lug rubber as the specimen, STRIP off the adhesive tape from the tire lug rubber, LET the middle part of the bottom of the specimen be in perpendicular contact with a round rod which has a diameter of 10 mm, BEND it around the rod slowly to make it into a straight angle, LET it be standing for 1 min, CHECK whether there is fracturing. The test is performed at laboratory conditions. 6.6 Tire bead tensile strength test CUT a tire bead with a length of approximately 200 mm at the tire bead area, USE a tensile tester with an accuracy of ± 2% to perform test at room temperature, the decreasing speed of the tensile tester is 25 mm/min. 6.7 Cord fabric tensile strength test From the corresponding part of the tire crown, along the longitudinal direction of first layer of the cord fabric, MAKE a test piece with a width of 10 mm, USE the tensile tester to perform test. The test shall be carried out under laboratory conditions. The tensile speed shall be 200 mm/min ~ 300 mm/min. 6.8 Adhesion strength test 6.9 Strength test The tube strength test of the tire is carried out in accordance with the provisions of GB/T 9749. 6.10 Detachment hydraulic test The detachment hydraulic pressure of tire is tested in accordance with the provisions of GB/T 9749. 6.11 Durability test The durability test of the tire is carried out in accordance with the provisions of GB/T 9749. 6.12 Static load test The static load test of the tire is carried out in accordance with the provisions of HG/T 2906.7 Marking, packaging, transport and storage7.1 Marking Tires shall have the following markings, where a) ~ d) are permanent markings, and e) and f) are markings that cannot be washed off. The marking is as follows. 7.2 Packaging Packaging shall meet the requirements of commodity packaging and be conducive to transportation and storage.8 OthersIf there are special requirements, they can be resolved through consultation between the supplier and the purchaser in accordance with the main principles of this standard. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 1702-2017 be delivered?Answer: The full copy PDF of English version of GB/T 1702-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 1702-2017_English with my colleagues?Answer: Yes. 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