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GB/T 24721.3-2023 English PDF (GB/T 24721.3-2009)

GB/T 24721.3-2023_English: PDF (GB/T24721.3-2023)
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GB/T 24721.3-2023English200 Add to Cart 0--9 seconds. Auto-delivery Glass fiber reinforced plastic product for highway -- Part 3: Duct Valid GB/T 24721.3-2023
GB/T 24721.3-2009English359 Add to Cart 3 days [Need to translate] Glass fiber reinforced plastic product for highway -- Part 3: Duct Obsolete GB/T 24721.3-2009


BASIC DATA
Standard ID GB/T 24721.3-2023 (GB/T24721.3-2023)
Description (Translated English) Glass fiber reinforced plastic product for highway -- Part 3: Duct
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard P66
Classification of International Standard 03.220.20; 93.080.30
Word Count Estimation 11,141
Date of Issue 2023-03-17
Date of Implementation 2023-07-01
Older Standard (superseded by this standard) GB/T 24721.3-2009
Drafting Organization Highway Research Institute of the Ministry of Transport, Zhonglu Gaoke Traffic Inspection and Certification Co., Ltd.
Administrative Organization National Transportation Engineering Facilities (Highway) Standardization Technical Committee (SAC/TC 223)
Proposing organization National Transportation Engineering Facilities (Highway) Standardization Technical Committee (SAC/TC 223)
Issuing agency(ies) State Administration for Market Regulation, National Standardization Management Committee

BASIC DATA
Standard ID GB/T 24721.3-2009 (GB/T24721.3-2009)
Description (Translated English) Glass fiber reinforced plastic product for highway. Part 3: Duct
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard P66
Classification of International Standard 03.220.20; 93.080.30
Word Count Estimation 9,992
Date of Issue 2009-11-30
Date of Implementation 2010-04-01
Quoted Standard GB/T 1458; GB/T 5352; GB/T 14152; GB/T 24721.1-2009; GB/T 24721.2-2009; QB/T 2803-2006
Drafting Organization Ministry of Transportation Highway Research Institute
Administrative Organization National Traffic Engineering Facility (highway) Standardization Technical Committee
Regulation (derived from) National Standard Approval Announcement 2009 No.14 (Total No.154); Ministry of Transport Announcement 2010 No.34
Proposing organization National Traffic engineering facilities (highway) Standardization Technical Committee (SAC/TC 223)
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the road with glass fiber reinforced plastic pipes (hereinafter referred to as the glass pipe) product classification, test methods, , structure, dimensions and deviations, technical requirements for inspection rules, signs, packaging, transport and storage and so on. This section applies to highway use glass pipes, glass pipes do not apply to parts and accessories. Other roads with glass fiber reinforced plastic pipes can refer to use.


GB/T 24721.3-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 03.220.20; 93.080.30 CCS P 66 Replacing GB/T 24721.3-2009 Glass Fiber Reinforced Plastic Product for Highway - Part 3: Duct ISSUED ON: MARCH 17, 2023 IMPLEMENTED ON: JULY 1, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative References ... 6 3 Terms and Definitions ... 6 4 Product Classification, Structures, Dimensions, Deviations and Model ... 7 5 Technical Requirements ... 9 6 Test Methods ... 10 7 Inspection Rules ... 13 8 Marking, Packaging, Transportation and Storage ... 13 Foreword This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents. This document is Part 3 of GB/T 24721 Glass Fiber Reinforced Plastic Product for Highway. GB/T 24721 has issued the following parts: ---Part 1: General Rule; ---Part 2: Trunk; ---Part 3: Duct; ---Part 4: Non-pressure Communications Well Lid; ---Part 5: Sign Base Panel. This document serves as a replacement of GB/T 24721.3-2009 Glass Fiber Reinforced Plastic Product for Highway - Part 3: Duct. In comparison with GB/T 24721.3-2009, apart from structural adjustments and editorial modifications, the main technical changes are as follows: a) The classification of glass fiber reinforced ducts is modified (see 4.1; 3.1 of Version 2009); b) The technical requirements for flame-retardant properties are modified (see Table 2; Table 2 of Version 2009); c) Gasoline No., water temperature requirements for general tests and test temperature requirements for chemical media resistance are modified (see 6.2, 6.9 and 6.10; 5.2, 5.5.4 and 5.5.5 of Version 2009); d) The test methods for flame-retardant properties are added (see 6.8). Please be noted that certain content of this document may involve patents. The institution issuing this document does not undertake the responsibility of identifying these patents. This document was proposed by and shall be under the jurisdiction of National Technical Committee 223 on Traffic Engineering Facilities Highway of Standardization Administration of China (SAC/TC 223). The drafting organizations of this document: Research Institute of Highway Ministry of Transport; China-Road Transportation Verification & Inspection Hi-Tech Co., Ltd. The main drafters of this document: Zhang Zhiyong, Ma Xuefeng, Wang Zhihua, Lu Yuhong, Liu Yanfei, Guo Donghua, Bai Yuanyuan, Xu Dong, Zhou Dai, Han Yue, Zhou Haifeng, Wu Xun, Gao Feng, Cai Mengde, Wei Zhengzhi, Wang Jiangbei. Glass Fiber Reinforced Plastic Product for Highway - Part 3: Duct 1 Scope This document specifies the product classification, structures, dimensions and deviations, model, technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage requirements for glass fiber reinforced plastic duct for highway. This document is applicable to the production, inspection and usage of glass fiber reinforced plastic duct for highway (hereinafter referred to as “glass fiber reinforced duct”). 2 Normative References The contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 1458 Method for Mechanical Properties of Ring of Filament - Winding Reinforced Plastics GB/T 5352 Fiber-reinforced Thermosetting Plastic Composites Pipe - Determination for External Loading Properties by Parallel-plate Loading GB/T 14152 Thermoplastics Pipes - Determination of Resistance to External Blows - Round- the-clock Method GB/T 24721.1-2023 Glass Fiber Reinforced Plastic Product for Highway - Part 1: General Rule GB/T 24721.2-2023 Glass Fiber Reinforced Plastic Product for Highway - Part 2: Trunk QB/T 2803 Determination of Deflection for Rigid Plastic Pipes 3 Terms and Definitions This document does not have terms or definitions that need to be defined. measurement result. 6.5.2 Wall thickness Use a micrometer with a division value not greater than 0.01 mm to respectively measure-take three measurement values at the socket end and the insertion end; take the arithmetic mean as the measurement result. 6.5.3 Inner diameter of socket end Use a caliper with a division value not greater than 0.02 mm to measure-take three values at an interval of 120 on the section of the duct socket end; take the arithmetic mean as the measurement result. 6.5.4 Length Use a steel tape with a division value of 1 mm to respectively measure-take three values along the axial direction of the duct; take the arithmetic mean as the measurement result. 6.5.5 Deflection In accordance with the stipulations of QB/T 2803, conduct the test. 6.6 Appearance Quality In accordance with the stipulations of 6.5 in GB/T 24721.1-2023, conduct the test. 6.7 General Physical and Mechanical Properties 6.7.1 Tensile strength 6.7.1.1 Rolled and pultruded glass fiber reinforced ducts shall be tested in accordance with the stipulations of 6.6.1 in GB/T 24721.1-2023. 6.7.1.2 Winded glass fiber reinforced ducts shall be tested in accordance with the stipulations of GB/T 1458. 6.7.2 Flexural strength 6.7.2.1 Rolled glass fiber reinforced ducts shall be tested in accordance with the stipulations of 6.6.3 in GB/T 24721.1-2023. 6.7.2.2 Winded glass fiber reinforced ducts shall be tested in accordance with the stipulations of GB/T 5352; the circumferential flexural strength shall be calculated in accordance with Formula (1): Where, D---the circumferential flexural strength, expressed in (MPa); P---the maximum compressive load, expressed in (N); D0---the outer diameter of the duct, expressed in (mm); L---the length of the specimen, expressed in (mm); D---the inner diameter of the duct, expressed in (mm). 6.7.3 Density In accordance with the stipulations of 6.6.5 in GB/T 24721.1-2023, conduct the test. 6.7.4 Barcol hardness In accordance with the stipulations of 6.6.6 in GB/T 24721.1-2023, conduct the test. 6.7.5 Load deformation temperature In accordance with the stipulations of 6.6.7 in GB/T 24721.1-2023, conduct the test. 6.7.6 Static friction coefficient of inner wall of duct In accordance with the stipulations of Appendix B in GB/T 24721.2-2023, conduct the test. The length of the duct specimen is not less than 500 mm. 6.7.7 Duct rigidity In accordance with the stipulations of GB/T 5352, conduct the test. The specimen length is 300 mm. When the radial change rate of the duct is 10% of the inner diameter, determine the duct rigidity. 6.7.8 Resistance to drop hammer impact In accordance with the stipulations of GB/T 14152, conduct the test. The specimen length is 200 mm, and the test temperature is (20  2) C. Select Type D90 hammer, the hammer weight is 6.3 kg  32 g, and the drop height is 1 m  10 mm. For each specimen, impact once. 6.8 Flame-retardant Properties In accordance with the stipulations of 6.7 in GB/T 24721.1-2023, conduct the test. 6.9 Water Resistance In accordance with the stipulations of 6.10 in GB/T 24721.1-2023, conduct the test. 6.10 Resistance to Chemical Media ......


GB/T 24721.3-2009 Glass fiber reinforced plastic product for highway.Part 3. Duct ICS 03.220.20; 93.080.30 P66 National Standards of People's Republic of China Highway glass fiber reinforced plastic products Part 3. Pipes 2009-11-30 release 2010-04-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released Directory Preface III 1 range 1 2 normative reference document 1 3 Product classification, structure, size and deviation 1 Technical requirements 3 5 Test methods 3 6 inspection rules 5 Marking, Packaging, Transportation and Storage 5 Preface GB/T 24721 "Road glass fiber reinforced plastic products" is divided into five parts. - Part 1. General; - Part 2. - Part 3. Pipes; - Part 4. Non - pressurized communication covers; Part 5. Marking the floor. This part is part 3 of GB/T 24721. This part of the National Traffic Engineering Facilities (Highway) Standardization Technical Committee (SAC/TC223) proposed and centralized. The Ministry of Transportation, Full laboratory. This part participates in the drafting unit. Hangzhou Yuhang Tianyun Industry & Trade Co., Ltd., Beijing Zhonghua Huaan Technology Co., Ltd., Hangzhou Tianyun New Material Material Co., Ltd. The main drafters of this part. Zhang Zhiyong, Ma Xuefeng, Lu Yuhong, Guo Donghua, Sun Yue, Li Xiaoguo. Highway glass fiber reinforced plastic products Part 3. Pipes 1 range This part of GB/T 24721 specifies the product classification of glass fiber reinforced plastic pipes for highway (hereinafter referred to as FRP pipes) Structure, size and deviation, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage. This part applies to highway glass fiber reinforced plastic pipe, does not apply to fiberglass pipe fittings and accessories. Other road with glass fiber reinforced plastic pipe Road can refer to use. 2 normative reference documents The terms of this document are the terms of this part by reference to this part of GB/T 24721. Any reference to the date of the text , All subsequent amendments (excluding corrigenda) or revisions do not apply to this part, however, encouragement under this section The parties to the agreement study whether the latest version of these documents can be used. For undated references, the latest edition of this document applies section. Test method for mechanical properties of fiber - wound reinforced plastic ring specimens GB/T 1458 GB/T 5352 fiber reinforced thermosetting plastic pipe parallel to the performance test method (GB/T 5352-2005, ASTM D2412-1996, NEQ) GB/T 14152 Thermoplastics pipes - Test method for the impact resistance to external shocks - Clockwise rotation method (GB/T 14152-2001, eqv ISO 3127..1994) Road glass fibers - Reinforced plastic products - Part 1. General principles GB/T 24721.1 Road glass fibers - Reinforced plastic products - Part 2. Boxes GB/T 24721.2 Standard Test Method for Curvature of Rigid Plastic Tubes 3 Product classification, structure, size and deviation 3.1 Classification FRP pipe according to the molding process is divided into the following three kinds. a) J --- rolled glass fiber reinforced plastic pipe; b) C - winding glass fiber reinforced plastic pipe; c) other molded fiberglass pipes. 3.2 structure, size and deviation 3.2.1 Structure and size FRP pipe product structure shown in Figure 1, the structure size should be consistent with the provisions of Table 1. 3.2.2 deviation Shall comply with the following provisions. a) Diameter D allows a deviation of +0.75 mm. --- wall thickness of 5mm, the allowable deviation of +0.5 0 mm; --- wall thickness of 8mm, the allowable deviation of +0.80 mm. ......

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