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GB/T 5843-2025 English PDF

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Upon your order, we will start to translate GB/T 5843-2025_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.

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Q: Should I purchase the latest version GB/T 5843-2025?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5843-2025 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$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 5843-2025: Flange coupling
Status: Valid

GB/T 5843: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 5843-2025	359	Add to Cart	4 days	Flange coupling	Valid
GB/T 5843-2003	189	Add to Cart	3 days	Flange coupling	Valid
GB/T 5843-1986	279	Add to Cart	3 days	Flanged coupling	Obsolete

Similar standards

GB/T 5014 GB/T 4323 GB/T 5015 GB/T 5844 GB/T 5837

Basic data

Standard ID: GB/T 5843-2025 (GB/T5843-2025)
Description (Translated English): Flange coupling
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J19
Classification of International Standard: 21.120.20
Word Count Estimation: 18,193
Date of Issue: 2025-03-28
Date of Implementation: 2025-10-01
Older Standard (superseded by this standard): GB/T 5843-2003
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 5843-2025: Flange coupling

---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.
GB/T 5843-2025 English version. Flange coupling ICS 21.120.20 CCSJ19 National Standard of the People's Republic of China Replace GB/T 5843-2003 Flange coupling Released on 2025-03-28 2025-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Type and marking 1 5 Basic parameters and main dimensions 5 6 Technical Requirements11 7 Test methods 11 8 Inspection Rules 12 9 Marking, packaging, transportation and storage 12 Reference 13

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 5843-2003 "Flange Couplings". Compared with GB/T 5843-2003, except for structural adjustments and editorial changes, In addition to the above, the main technical changes are as follows. a) The J1-type shaft hole of the GY-type flange coupling has been deleted (see Figure 1 and Table 1 of the.2003 edition); b) The J1-type shaft hole of the GYS flange coupling has been deleted (see Figure 2 and Table 1 of the.2003 edition); c) The J1-type shaft hole of the GYH flange coupling has been deleted (see Figure 3 and Table 1 of the.2003 edition); d) The nominal torque values of flange couplings have been changed (see Chapter 1 and Table 1, Table 1 of the.2003 edition); e) The marking method of flange couplings has been changed (see 4.2, 3.2 of the.2003 edition); f) Changed the rotation diameter D of flange couplings of GY110 (formerly GY4), GYS110 (formerly GYS4), GYH110 (formerly GYH4) The value of (see Table 1, Table 1 of the.2003 edition); g) Added some shaft hole diameter specifications (see Table 1); h) Added the tolerance zone code for the flange coupling shaft hole diameter (see Table 1); i) Added relevant parameters of connecting bolt holes (see Table 1); j) The materials of the half-shaft and the centering ring (GYH type) have been changed (see Table 2, Table 2 of the.2003 edition); k) Added the bolt tightening torque requirements for flange couplings (see 6.4); l) Added test methods (see Chapter 7). 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 for Standardization of Machine Shafts and Accessories (SAC/TC109). This document was drafted by. Erzhong (Deyang) Heavy Equipment Co., Ltd., Taiyuan Heavy Industry Co., Ltd., Yanqi Lake Basic Manufacturing Technology Research Institute Institute (Beijing) Co., Ltd., Hebei Hengtong Transmission Machinery Co., Ltd., Dongfang Electric Group Dongfang Steam Turbine Co., Ltd., China Heavy Machinery Research Institute Co., Ltd., China Machinery Engineering Institute Group Ningbo Intelligent Machine Tool Research Institute Co., Ltd., Hubei Power Transmission Intelligent Manufacturing Innovation Center Limited Liability Company, Nanjing Gongnuo Technology Co., Ltd., Hubei Yinguan Axle Co., Ltd., and China Machinery Productivity Promotion Center Co., Ltd. The main drafters of this document are. Shao Jumin, Gao Lin, Xu Hongyan, Chen Jingyu, Liu Luming, Yin Gang, Liu Yong, Tian Xichen, Huang Lizhao, Liu Yi, Wang Li, Zhou Peng and Li Quanjun. This document was first issued in 1986, revised for the first time in.2003, and this is the second revision. Flange coupling

1 Scope

This document specifies the basic parameters, main dimensions and technical requirements of flange couplings, as well as test methods, inspection rules, marking, packaging, It also defines the types and markings of products. This document is applicable to the manufacture of flange couplings that transmit nominal torques of 80 N·m to 180000 N·m.

2 Normative references

The contents of the following documents constitute 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 27 Hexagonal head reinforcement bolts GB/T 191 Pictorial markings for packaging, storage and transportation GB/T 699-2015 High-quality carbon structural steel GB/T 1800.1-2020 Product Geometrical Technical Specification (GPS) Linear Dimension Tolerance ISO Code System Part 1.Tolerances, The basis of deviation and fit GB/T 1800.2-2020 Geometrical Product Specifications (GPS) Linear Dimension Tolerances ISO Code System Part 2.Standards Tolerance zone codes and limit deviation tables for holes and shafts GB/T 3098.1-2010 Mechanical properties of fasteners Bolts, screws and studs GB/T 3098.2-2015 Mechanical properties of fasteners - Nuts GB/T 3852-2017 Coupling shaft hole and connection type and size GB/T 3931 Coupling Terminology GB/T 4879 Rust-proof Packaging GB/T 5782 Hexagon head bolts GB/T 6388 Shipping and receiving marks for transport packaging GB/T 12458-2017 Coupling Classification GB/T 13384 General technical requirements for packaging of electromechanical products

3 Terms and definitions

The terms and definitions defined in GB/T 3931 apply to this document.

4 Type and marking

4.1 Type According to the classification rules defined in GB/T 12458-2017, the types of flange couplings are divided into. --- Basic type (see Figure 1), type code "GY"; --- Centering tenon type (see Figure 2), type code "GYS"; ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 5843-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 5843-2025_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 5843-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 5843-2025_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 5843-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5843-2025 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.