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GB/T 31293-2025 English PDF

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Q: Should I purchase the latest version GB/T 31293-2025?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 31293-2025 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.

US$289.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 31293-2025: Vacuum resin infusion molding epoxy for wind blade
Status: Valid

GB/T 31293: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31293-2025	289	Add to Cart	3 days	Vacuum resin infusion molding epoxy for wind blade	Valid
GB/T 31293-2014	229	Add to Cart	3 days	Vacuum resin infusion molding epoxy for wind blade	Valid

Similar standards

GB/T 40388 GB/T 39491 GB/T 36262 GB/T 31295 GB/T 31294

Basic data

Standard ID: GB/T 31293-2025 (GB/T31293-2025)
Description (Translated English): Vacuum resin infusion molding epoxy for wind blade
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q23
Classification of International Standard: 83.120
Word Count Estimation: 14,195
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Older Standard (superseded by this standard): GB/T 31293-2014
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 31293-2025: Vacuum resin infusion molding epoxy for wind blade

---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/GBT31293-2025
ICS 83.120 CCSQ23 National Standard of the People's Republic of China Replaces GB/T 31293-2014 Vacuum infusion of epoxy resin for wind turbine blades Released on June 30, 2025 Implementation on January 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 31293-2014 "Vacuum-infused epoxy resin for wind turbine blades". Compared with GB/T 31293-2014, In addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The classification method has been changed (see Chapter 4, Chapter 4 of the.2014 edition); b) The exothermic peak temperature requirement was changed, the gel time requirement was deleted, and the pot life requirement was added (see 5.2, 5.2 of the.2014 edition); c) Added requirements for casting density and impact toughness (see 5.3); d) Added the test method for appearance (see 6.1); e) The test method for exothermic peak temperature has been changed (see 6.2.6, 6.7 of the.2014 edition); f) Added the test method for pot life (see 6.2.7); g) The test method for gel time has been deleted (see 6.6 of the.2014 edition); h) Added the method for preparing casting specimens (see 6.3.1); i) Added the test method for casting density (see 6.3.2); j) The requirements for type inspection cycle have been changed (see 7.2, 7.2 of the.2014 edition); k) The batching rules have been changed (see 7.4, 7.4 of the.2014 edition); l) The sampling plan and sampling method have been changed (see 7.5, 7.5 of the.2014 edition); m) The storage period requirements have been changed (see 8.4.2, 8.4.2 of the.2014 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Fiber Reinforced Plastics (SAC/TC39). This document was drafted by. Sichuan Dongshu New Materials Co., Ltd., Beijing Glass and Steel Institute Testing Center Co., Ltd., Beijing Glass Institute (Tengzhou) Composite Materials Co., Ltd. Materials Co., Ltd., Zhejiang Wansheng Co., Ltd., Guangdong Mingyang New Energy Materials Technology Co., Ltd., Daosheng Tianhe Materials Technology (Shanghai) Co., Ltd. Co., Ltd., Huibai New Materials Technology (Shanghai) Co., Ltd., Shanghai Dewei New Energy Materials Co., Ltd., Jiangsu Yangnong Jinhu Chemical Co., Ltd., Shandong Shangzheng New Materials Technology Co., Ltd., Guangzhou Polymer New Materials Technology Co., Ltd., Beijing Guohua New Materials Technology Co., Ltd. Technology Research Institute Co., Ltd., Tangshan Yulong New Materials Technology Co., Ltd., Dongfang Electric Wind Power Co., Ltd., Goldwind Science & Technology Co., Ltd. Co., Ltd., Envision Energy Co., Ltd., Sany Heavy Energy Co., Ltd., Yunda Energy Technology Group Co., Ltd., Sinoma Science & Technology Wind Power Blade Co., Ltd. Co., Ltd., Sinoma Science & Technology (Jiuquan) Wind Power Blade Co., Ltd., and Zhuzhou Times New Materials Technology Co., Ltd. The main drafters of this document are. Xiao Yi, Zhou Baineng, Yang Dexu, Yao Yalin, Wang Ping, Zeng Wei, Wang Yanli, Chen Cuiping, Tan Shuiping, Zhang Xiaocun, Yu Xiaowei, Jian Fangtian, Tan Jun, Xie Yong, Wang Jikang, Wang Yibo, Wu Shuangquan, Li Xiuhai, Yang Senlin, Hao Zhuang, Ma Hao, Guo Jinlei, Zhou Xiaoliang, Li Chengliang, Lu Jiaqi, Chen Huang, and Mou Shuxiang. This document was first published in.2014 and this is the first revision. Vacuum infusion of epoxy resin for wind turbine blades

1 Scope

This document specifies the classification and technical requirements of vacuum-infused epoxy resin for wind turbine blades, describes the test methods and inspection rules, and specifies Marking, packaging, transportation and storage. This document applies to the production and inspection of vacuum-infused epoxy resins for wind turbine blades.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB 190 Dangerous Goods Packaging Marking GB/T 191 Pictorial markings for packaging, storage and transportation GB/T 601-2016 Preparation of standard titration solutions for chemical reagents GB/T 1033.1-2008 Plastics - Determination of density of non-cellular plastics - Part 1.Immersion method, pycnometer method and titration method GB/T 2035 Plastics Terminology GB/T 2567-2021 Test method for properties of resin castings GB/T 3961 Terminology of fiber reinforced plastics GB/T 4612 Determination of epoxy equivalent of plastic epoxy compounds GB/T 6488 Determination of refractive index of liquid chemical products GB/T 6678 General Principles for Sampling of Chemical Products GB/T 6680-2003 General rules for sampling of liquid chemical products GB/T 11547 Plastics - Determination of resistance to liquid chemical reagents GB 18191 Packaging containers - Plastic drums for dangerous goods GB/T 19466.2 Plastics Differential Scanning Calorimetry (DSC) Part 2.Determination of glass transition temperature GB/T 22314 Determination of viscosity of epoxy resin plastics GB/T 24148.9 Plastics Unsaturated polyester resins (UP-R) Part 9.Determination of total volume shrinkage

3 Terms and Definitions

The terms and definitions defined in GB/T 2035 and GB/T 3961 and the following apply to this document. 3.1 In a mold consisting of a rigid half mold and a flexible membrane, the resin is injected into the preform through a preset pipeline using the pressure generated by the vacuum. A method for preparing a composite product by curing. 3.2 epoxy resin system A liquid mixture of epoxy resin and curing agent in a formulated ratio. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 31293-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 31293-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 31293-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 31293-2025_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+ countries

Question 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 31293-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 31293-2025 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.