GB/T 39970-2021 PDF EnglishUS$75.00 · In stock · Download in 9 seconds
GB/T 39970-2021: Thresholds and grading of coast-by noise for motor vehicle 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
Similar standardsGB/T 39970-2021: Thresholds and grading of coast-by noise for motor vehicle 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/GBT39970-2021GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.160.10 G 41 Thresholds and grading of coast-by noise for motor vehicle tyres ISSUED ON: MAY 21, 2021 IMPLEMENTED ON: DECEMBER 01, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 Thresholds and grading requirements for coast-by noise ... 5 5 Test methods ... 7ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard was proposed by China Petroleum and Chemical Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee on Tyres and Rims of Standardization Administration of China (SAC/TC 19). The drafting organizations of this Standard: Beijing Rubber Industry Research and Design Institute Co., Ltd., Anhui Detech Automobile Testing Center Co., Ltd., Triangle Tire Co., Ltd., Shandong Linglong Tire Co., Ltd., Double Star Group Co., Ltd., Double Coin Group Shanghai Tire Research Institute Co., Ltd., Zhongce Rubber Group Co., Ltd., Sailun Group Co., Ltd., Anhui Jiatong Passenger Radial Tire Co., Ltd., Wanli Tire Co., Ltd., Fengshen Tire Co., Ltd., Chaoyang Langma Tire Co., Ltd., Qingdao Senkirin Tire Co., Ltd., Sichuan Tire & Rubber (Group) Co., Ltd., Shandong Jinyu Tire Co., Ltd., Tongji University, China Quality Certification Center, Xiamen Zhengxin Rubber Industry Co., Ltd., Pulin Chengshan (Shandong) Tire Co., Ltd., Jiangsu General Technology Co., Ltd., Shandong Huasheng Rubber Co., Ltd., Guizhou Tire Co., Ltd., Shandong Xinghongyuan Tire Co., Ltd., Shandong Zhongren Bureau Veritas Testing Technology Co., Ltd., Beijing Zhongqihua Standard Measurement and Control Technology Co., Ltd., Shandong Fengyuan Tire Manufacturing Co., Ltd., Michelin (China) Investment Co., Ltd., Continental Tire (China) Co., Ltd., Bridgestone (China) Investment Co., Ltd., Dalian Goodyear Tire Co., Ltd., Sumitomo Rubber (China) Co., Ltd., Hankook Tire Co., Ltd., Yokohama Rubber Co., Ltd., SAIC-GM-Wuling Automobile Co., Ltd., Nanjing Iveco Automobile Co., Ltd. Main drafters of this Standard: Wang Kexian, Li Shuhuan, Wu Xiaodong, Zhou Pengcheng, Chen Shaomei, Gao Tongshun, Zhang Lingyan, Zhu Zhenhua, Wang Jianqiang, Ma Xiuxiang, Huang Junqi, Li Zhao, Yu Haili, Liu Jingjing, Luo Jiangang, Yang Wanlong, Ge Jianmin, Zhao Xiang, Chen Jianming, Che Mingming, Ding Zhenhong, Xiao Shenglong, Huang Ge Ge, Li Renguo, Sun Xiaofei, Wang Dong, Ning Weiming, Lu Yi, Ma Zhong, Gu Yunpeng, Yin Qingye, Zhang Bin, Liu Qingjie, Wang Zhenxiao, Wei Baolyu, Zhu Xiao, Mou Shouyong, Xu Lihong, Zheng Rui, Li Julong, Jiang Zhongkai, He Pengchun Thresholds and grading of coast-by noise for motor vehicle tyres1 ScopeThis Standard specifies the thresholds and grading requirements and test methods for coast-by noise for motor vehicle tyres. This Standard is applicable to new vehicle radial tyres and new mini, light truck radial tyres and new truck radial tyres, excluding tyres with nominal rim diameter ≤10 inches and nominal rim diameter ≥25 inches, T-type spare tyres for temporary use only, special ST metric tyres for road trailers, high-passability radial tyres for light truck vehicle, heavy truck tyres with a speed capability of 80km/h (not included), racing tyres, studded tyres and professional off-road tyres.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6326, Tyre terms and definitions GB/T 22036, Coast-by methods for measurement of tyre-to-road sound emission3 Terms and definitionsFor the purposes of this document, the terms and definitions defined in GB/T 6326 as well as the followings apply. 3.1 traction tyre Tyres that are mainly designed for driving wheels of vehicles. Compared with ordinary tyres, this type of tyre has better gripping performance and can transmit the power of the vehicle to the maximum extent. The tyre tread has at least 2 circumferential strip patterns. Each pattern contains no less than 30 pattern blocks. These blocks are separated by grooves and small sipes that are ......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 39970-2021 be delivered?Answer: The full copy PDF of English version of GB/T 39970-2021 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 39970-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 39970-2021_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 39970-2021 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 39970-2021?A step-by-step guide to download PDF of GB/T 39970-2021_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 39970-2021". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
