GB/T 24722-2020 English PDFUS$409.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 24722-2020: Glass beads for road markings Status: Valid GB/T 24722: Historical versions
Basic dataStandard ID: GB/T 24722-2020 (GB/T24722-2020)Description (Translated English): Glass beads for road markings Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: P66 Classification of International Standard: 03.220.20; 93.080.30 Word Count Estimation: 22,267 Date of Issue: 2020-12-14 Date of Implementation: 2021-07-01 Older Standard (superseded by this standard): GB/T 24722-2009 Quoted Standard: GB/T 6003.1; GB/T 16311; GB/T 33503; JT/T 674; JT/T 1035.1-2016 Regulation (derived from): National Standard Announcement No. 28 of 2020 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration Summary: This standard specifies the product classification and usage, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements of glass beads for road marking. This standard applies to the production, inspection and use of glass beads for road marking paint. GB/T 24722-2020: Glass beads for road markings---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.(Glass beads for road marking) ICS 03:220:20;93:080:30 P66 National Standards of People's Republic of China Replace GB/T 24722-2009 Glass beads for road marking 2020-12-14 release 2021-07-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee Table of contentsForeword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Product classification and usage 2 5 Technical requirements 2 6 Test method 3 7 Inspection rules 9 8 Marking, packaging, transportation and storage 10 Appendix A (informative appendix) The main defects of glass beads 11 Appendix B (Informative Appendix) Selection rules and test methods for glass beads with particle size distribution other than No: 1, No: 2, No: 3, and No: 4 glass beads 15 Appendix C (Informative Appendix) Standard Screen Mesh Hole Size and Mesh Number Comparison Table 17 Reference 18ForewordThis standard was drafted in accordance with the rules given in GB/T 1:1-2009: This standard replaces GB/T 24722-2009 "Glass Beads for Road Marking": Compared with GB/T 24722-2009, except for editorial changes The main technical changes are as follows: ---Modified the definitions of sprinkled glass beads, premixed glass beads, and coated glass beads (see 3:1, 3:2, 3:3, 3:1, 3:2, 3:3); ---Added the terms and definitions of defective glass beads and rainy night glass beads (see 3:4, 3:5); --- Deleted the classification of coated glass beads and ordinary glass beads (see 4:1:3 of the:2009 edition); ---According to the different particle size distribution, No: 4 glass beads are added (see 4:1:3); ---Modified the method of indicating the particle size of glass beads (see Table 1, Table 1 of the:2009 edition); ---Modified the product use of No: 2 glass beads (see 4:2:2, 4:2:2 of the:2009 edition); ---Added the use of No: 4 glass beads (see 4:2:4); ---Modified the technical requirements for appearance (see 5:1, 5:1 of the:2009 edition); ---Modified the technical requirements for the roundness rate, increased the technical requirements for the percentage of defective glass beads, and merged the two items into "roundness rate/ Percentage of defective glass beads" (see 5:2, 5:3 of the:2009 edition); --- Added reference selection rules for glass beads with suitable particle size distribution (see 5:3); ---Modified the technical requirements for density (see 5:4, 5:4 of the:2009 edition); --- Modify the requirements of waterproof coating to moisture-proof coating performance (see 5:8, 6:10, 5:8, 6:10 of the:2009 edition) ---Added the technical requirements for lead content (see 5:9); ---Added the technical requirements for arsenic content (see 5:10); ---The technical requirements for antimony content have been added (see 5:11); ---Modified the preparation of the sample (see 6:1, 6:1 of the:2009 edition); --- Deleted the schematic diagram of the two splitter structure (see Figure 1 in the:2009 edition); ---Modified the test working temperature (see 6:2, 6:2 of the:2009 edition); ---The test method for the percentage of defective glass beads has been added (see 6:4:2); --- Added particle size tester method for testing particle size distribution (see 6:5:2); ---Modified the immersion method for refractive index test (see 6:7:1, 6:7 of the:2009 edition); --- Added secondary rainbow method for refractive index test (see 6:7:2); ---Added the lead content test method (see 6:11); ---Added arsenic content test method (see 6:12); ---Added the antimony content test method (see 6:13); ---Modified the inspection rules (see Chapter 7, Chapter 7 of the:2009 edition); ---Modified the requirements of the logo (see 8:1, 8:1 of the:2009 edition); ---Modified packaging requirements (see 8:2, 8:2 in the:2009 edition); ---Modified the transportation requirements (see 8:3, 8:3 of the:2009 edition); ---Added the main defect form of glass beads (see Appendix A); ---Added No: 1, No: 2, No: 3, No: 4 glass beads and other particle size distribution glass beads selection rules and test methods (see Appendix B); ---Revised the standard screen mesh size and mesh number comparison table (see Appendix C, Appendix A of the:2009 edition): This standard was proposed and managed by the National Transportation Engineering Facilities (Highway) Standardization Technical Committee (SAC/TC223): Drafting organizations of this standard: The Institute of Highway Science, Ministry of Transport, National Transportation Safety Facilities Quality Supervision and Inspection Center, Zhonglu High-tech Through Testing, Inspection and Certification Co:, Ltd: The main drafters of this standard: Guo Donghua, Peng Lei, Su Hejun, Liu Hengquan, Ma Xuefeng, Ke Dongqing, Xu Dong, Guo Zhanyang, Wang Jing: The previous versions of the standard replaced by this standard are as follows: ---GB/T 24722-2009: Glass beads for road marking1 ScopeThis standard specifies the product classification and use, technical requirements, test methods, inspection rules, and signs and packages of glass beads for pavement marking: Requirements for loading, transportation and storage: This standard applies to the production, inspection and use of glass beads for road marking paint:2 Normative referencesThe following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article Pieces: For undated references, the latest version (including all amendments) applies to this document: GB/T 6003:1 Technical Requirements and Inspection of Test Sieve Part 1: Metal Wire Woven Mesh Test Sieve GB/T 16311 Road traffic marking quality requirements and testing methods GB/T 33503 Chemical composition analysis method of lead-containing glass JT/T 674 glass bead selector JT/T 1035:1-2016 Glass beads for road retroreflective materials Part 1: General rules3 Terms and definitionsThe following terms and definitions apply to this document: 3:1 Surface sprinkled with glass beads droponglassbeads The pavement marking paint is applied to the pavement as an undried road traffic marking coating, and then the glass beads are sprinkled on it: 3:2 Premix glassbeads The glass beads evenly mixed in the road marking paint product: 3:3 Coated glassbeads In order to improve the performance of glass beads, surface treatment is used to make glass beads with functions such as moisture proof, suspension and viscosity increase: Note: The moisture-proof function is used to prevent glass beads from absorbing moisture in the air; after the glass beads are spread on the road marking paint, the suspension function can prevent the glass beads from sinking too much: Deep; after the glass beads are spread on the road marking paint, the adhesion-increasing function can enhance the bonding performance of the glass beads and the road marking paint: 3:4 Defectiveglassbeads The main defects are elliptical, satellite, tearing, melting, slightly rounded, opaque, milky white, glass beads containing bubbles, grains or foreign particles (not Including glass bead assembly): 3:5 Glassbeadsforrainynight Glass beads or glass bead aggregates with good retroreflective properties under dry, humid or continuous rain night conditions: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 24722-2020_English be delivered?Answer: Upon your order, we will start to translate GB/T 24722-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 24722-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 24722-2020_English will be deemed to be sold to your employer/organization who actually pays 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. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 24722-2020?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 24722-2020 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
