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GB/T 33617-2025 English PDF

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Q: Should I purchase the latest version GB/T 33617-2025?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 33617-2025 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$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 33617-2025: Polyimide staple fibre
Status: Valid

GB/T 33617: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33617-2025	199	Add to Cart	3 days	Polyimide staple fibre	Valid
GB/T 33617-2017	359	Add to Cart	4 days	Polyimide staple fiber	Valid

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GB/T 43014 GB/T 42823 GB/T 16604 GB/T 16603

Basic data

Standard ID: GB/T 33617-2025 (GB/T33617-2025)
Description (Translated English): Polyimide staple fibre
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W52
Classification of International Standard: 59.060.20
Word Count Estimation: 9,925
Date of Issue: 2025-05-30
Date of Implementation: 2025-12-01
Older Standard (superseded by this standard): GB/T 33617-2017
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 33617-2025: Polyimide staple fibre

---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.
ICS 59.060.20 CCS W52 National Standard of the People's Republic of China Replaces GB/T 33617-2017 Polyimide staple fiber Released on 2025-05-30 2025-12-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

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 33617-2017 "Polyimide staple fibers". Compared with GB/T 33617-2017, except for the structural adjustment and In addition to logical changes, the main technical changes are as follows. --- Changed the scope (see Chapter 1, Chapter 1 of the.2017 edition); --- Deleted some terms and definitions (see 3.1, 3.2, 3.3 of the.2017 edition); ---Changed the technical requirements for linear density deviation rate, breaking strength, length deviation rate, overlong fiber rate, defect content, and dry heat shrinkage rate (See Table 1, Table 1 of the.2017 edition); ---Changed oxygen index, temperature of 5% thermal weight loss, heat-resistant breaking strength retention rate, acid-resistant breaking strength retention rate, and ultraviolet radiation resistance Technical requirements for breaking strength retention (see Table 2, 5.5~5.7, Table 2 of the.2017 edition); --- Deleted the technical requirements for moisture regain (see 5.4 of the.2017 edition); --- Added technical requirements for quality differences (see 5.8); ---Changed the length deviation rate, super long fiber rate, double long fiber content, dry heat shrinkage rate, oxygen index, temperature of 5% thermal weight loss, heat resistance Test methods for breaking strength retention, acid resistance breaking strength retention, and ultraviolet radiation resistance breaking strength retention (see 6.4, 6.7~6.9, 6.11, 6.4, 6.7~6.12 of the.2017 edition); --- Deleted the test method for moisture regain (see 6.14 of the.2017 edition); --- The inspection items have been changed (see 7.2.1, 7.2 of the.2017 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 and coordinated by the National Technical Committee on Standardization of Chemical Fibers (SAC/TC586). This document was drafted by. Jiangsu Aoshen New Materials Co., Ltd., Changchun Gaoqi Polyimide Materials Co., Ltd., Lianyungang Fiber Testing Center, Jiangsu Xiannuo New Material Technology Co., Ltd., Xinxing Jihua (Beijing) Material Technology Research Institute Co., Ltd., Donghua University, Jilin University Qi Polyimide Materials Co., Ltd., China Chemical Fiber Industry Association, Shanghai Textile Group Testing Standards Co., Ltd., Shanghai Textile Industry Technical Supervision Institute. The main drafters of this document are. Wang Shihua, Guo Tao, Yang Cheng, Qiu Xingxiang, Wu Dezhen, Ge Dengteng, Zhang Qinghua, Zhang Na, Zhang Zixin, Zhang Xiaoyan, Hu Shanshan, Teng Renqi, Liang Yan, Xu Denghui, Zhao Xin, Chen Yan, and Wang Yihan. The previous versions of this document and the documents it replaces are as follows. ---First published in.2017 as GB/T 33617-2017; ---This is the first revision. Polyimide staple fiber

1 Scope

This document defines the terms and definitions of polyimide staple fibers, and specifies product identification, technical requirements, inspection rules, marking, packaging, transportation, etc. The contents of transportation and storage are described, and the corresponding test methods are described. This document is applicable to polyimide staple fibers with a nominal linear density of 0.50dtex to 7.00dtex. Other specifications of polyimide staple fibers For reference only.

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/T 4146 (all parts) Textiles - Chemical Fibers GB/T 6503 Test method for moisture regain of chemical fibers GB/T 6504-2017 Test method for oil content of chemical fibers GB/T 6529 Standard atmospheres for conditioning and testing textiles GB/T 14334-2006 Sampling method for chemical staple fibers GB/T 14335 Test method for linear density of chemical staple fibers GB/T 14336-2008 Test method for length of chemical staple fibers GB/T 14337 Test method for tensile properties of chemical staple fibers GB/T 14338 Test method for curling properties of chemical staple fibers GB/T 14339-2008 Test method for defects of chemical staple fibers GB/T 37631 Test method for thermal decomposition temperature of chemical fibers GB/T 43015 Test method for dry heat shrinkage of synthetic staple fibers FZ/T 50016 Test method for combustion performance of chemical fibers - Oxygen index method FZ/T 50047 Test method for heat resistance, ultraviolet radiation resistance and acid resistance of polyimide fibers

3 Terms and definitions

GB/T 4146 (all parts) and the following terms and definitions apply to this document. 3.1 Temperature at which the weight is lost by 5% The temperature at which the sample loses 5% of its weight when thermogravimetric analysis is performed under the same conditions under programmed temperature and a certain atmosphere.

4 Product identification

4.1 Product specifications are expressed in nominal linear density (dtex) and nominal cut length (mm). Example. The polyimide staple fiber with a nominal linear density of 1.67 dtex and a nominal cut length of 51 mm has a product specification of 1.67 dtex × 51 mm. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 33617-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 33617-2025_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 33617-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 33617-2025_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 33617-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 33617-2025 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.