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GB/T 23337-2023 English PDF

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Q: Should I purchase the latest version GB/T 23337-2023?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 23337-2023 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$349.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 23337-2023: Internal combustion engines - Intake and exhaust valves - Specification
Status: Valid

GB/T 23337: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23337-2023	349	Add to Cart	4 days	Internal combustion engines - Intake and exhaust valves - Specification	Valid
GB/T 23337-2009	559	Add to Cart	3 days	Internal combustion engines -- Intake and exhaust valves -- Specification	Obsolete

Similar standards

GB/T 1859.1 GB/T 1859.2 JB/T 11880.7 GB/T 41161 GB/T 33928

Basic data

Standard ID: GB/T 23337-2023 (GB/T23337-2023)
Description (Translated English): Internal combustion engines - Intake and exhaust valves - Specification
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J93
Classification of International Standard: 27.020
Word Count Estimation: 18,199
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 23337-2009
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 23337-2023: Internal combustion engines - Intake and exhaust valves - Specification

---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 27.020 CCSJ93 National Standards of People's Republic of China Replace GB/T 23337-2009 Internal combustion engine intake and exhaust valve technical conditions Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Preface III 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Technical requirements 1 5 Inspection methods 9 6 Inspection Rules 11 7 Marking, packaging, transportation and storage12

Foreword

This document complies with the regulations of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Custom drafting. This document replaces GB/T 23337-2009 "Technical Conditions for Intake and Exhaust Valves of Internal Combustion Engines". Compared with GB/T 23337-2009, except In addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Changed the hardness of the valve base after quenching and tempering treatment (see 4.4.1,.2009 version of 4.4.1); b) Changed the surface hardness of the chrome-plated valve stem (see 4.6.1,.2009 version of 4.6.1); c) Changed the requirements for nitriding and nitriding layers of high-temperature alloy valves (see 4.6.2,.2009 version of 4.6.2); d) Changed the austenite grain size requirements for the metallographic structure of austenitic steel valves (see 4.7.3,.2009 version of 4.7.3); e) The requirements for the microstructure of high-temperature alloys have been changed (see 4.7.4,.2009 version of 4.7.4); f) The surface roughness requirements of the conical locking clip groove have been changed (see 4.8.4, 4.8.4 of the.2009 edition); g) Increased the oblique circular runout tolerance of the stem axis of the nitrided unground valve disc cone surface (see 4.9.2); h) The disc cone surface roundness tolerance has been changed (see 4.9.3, 4.9.3 of the.2009 version); i) Added sodium filling requirements and inspection methods for hollow sodium-filled valves (see 4.13 and 5.11); j) Added requirements and inspection methods for plate forged metal flow lines (see 4.14 and 5.12); k) Added the coaxiality inspection method between the inner cavity of the hollow sodium-filled valve and the cylindrical surface of the stem (see 5.7.9); l) Added the coaxiality inspection method of the valve bottom cavity to the cylindrical surface of the stem (see 5.7.10); m) Increased the chemical composition and mechanical properties of high-temperature alloy Ni30 and cladding alloy P25 (see Table 1 and Table 2). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Internal Combustion Engine Standardization Technical Committee (SAC/TC177). This document was drafted by. Shanghai Motor Vehicle Inspection and Certification Technology Research Center Co., Ltd., Jinan Ward Auto Parts Co., Ltd., Shanghai Overseas Combustion Engine Research Institute Co., Ltd., Huaiji Moon Valve Co., Ltd., Guangxi Yuchai Machinery Co., Ltd., Chongqing Sanai Hailingshi Industry Co., Ltd., Jinhua Star Valve Co., Ltd., Hunan Tianyan Machinery Co., Ltd., Anhui Jinqinglong Machinery Manufacturing Co., Ltd. Division, Jiangsu Shenyuan Group Co., Ltd., Hengyang Jinzeli Special Alloy Co., Ltd., Pinghu Auto Parts Inspection and Testing Co., Ltd., Beijing Foton Cummins Engine Co., Ltd., Tianjin Internal Combustion Engine Research Institute (Tianjin Motorcycle Technology Center). The main drafters of this document. Zhao Minghao, Dong Bing, Guo Hua, Luo Huahuan, Su Huailin, Peng Yong, Jiang Ruxing, Xia Caixia, Zuo Yanshang, Tu Yuguo, Zhong Junjie, Zhong Changlin, Xu Jianlu, Gong Yingli, Yan Xicheng. This document was first published in.2009 and this is the first revision. Internal combustion engine intake and exhaust valve technical conditions

1 Scope

This document specifies the technical requirements, inspection methods, inspection rules and marking, packaging, transportation and storage of internal combustion engine intake and exhaust valves. This document applies to the intake and exhaust valves of reciprocating piston internal combustion engines with a cylinder diameter of less than.200 mm.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 228.1 Tensile testing of metallic materials Part 1.Room temperature test methods GB/T 230.1 Rockwell hardness test of metallic materials Part 1.Test methods GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without tolerances noted GB/T 1958 Product Geometric Specification (GPS) Geometric Tolerance Detection and Verification GB/T 2828.1 Enumeration sampling inspection procedures Part 1.Batch-by-batch inspection sampling plan retrieved by acceptance quality limit (AQL) GB/T 3077 alloy structural steel GB/T 4340.1 Vickers hardness test of metallic materials Part 1.Test methods GB/T 4955 Metal coating coating thickness measurement anodic dissolution coulomb method GB/T 4956 Magnetic method for measuring the thickness of non-magnetic coatings on magnetic substrates GB/T 6394 Method for determination of average grain size of metals GB/T 6462 Microscopic method for measuring thickness of metal and oxide coatings GB/T 6809.2 Reciprocating internal combustion engine components and system terminology Part 2.Valve, camshaft transmission and drive mechanism GB/T 9790 Metallic materials Vickers and Knoop microhardness tests of metals and other inorganic coatings GB/T 11354-2005 Determination of nitrided layer depth and metallographic structure inspection of steel parts GB/T 12773 Steel and alloy bars for internal combustion engine valves JB/T 6012.2 Internal combustion engine intake and exhaust valves Part 2.Metallographic examination JB/T 6012.3 Internal combustion engine intake and exhaust valves Part 3.Magnetic particle inspection JB/T 6012.4 Internal combustion engine intake and exhaust valves Part 4.Ultrasonic flaw detection of friction welded valves QC/T 469-2016 Technical conditions for automobile engine valves

3 Terms and definitions

The terms and definitions defined in GB/T 6809.2 and QC/T 469-2016 apply to this document.

4 Technical requirements

4.1 General Valve products should be manufactured according to drawings and technical documents approved through prescribed procedures, and should comply with the requirements of this document; the names of each part of the valve should be ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 23337-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 23337-2023_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 23337-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 23337-2023_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 23337-2023?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 23337-2023 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.