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GB/T 1149.8-2022 English PDF

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Q: Should I purchase the latest version GB/T 1149.8-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1149.8-2022 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$454.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 1149.8-2022: Internal combustion engines - Piston rings - Part 8: Rectangular rings made of steel
Status: Valid

GB/T 1149.8: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1149.8-2022	454	Add to Cart	4 days	Internal combustion engines - Piston rings - Part 8: Rectangular rings made of steel	Valid
GB/T 1149.8-2008	874	Add to Cart	4 days	Internal combustion engines -- Piston rings -- Part 8: Rectangular rings made of steel	Obsolete

Similar standards

GB/T 1859.1 GB/T 1148 JB/T 6729 GB/T 1149.12 GB/T 1149.17 GB/T 1149.11

Basic data

Standard ID: GB/T 1149.8-2022 (GB/T1149.8-2022)
Description (Translated English): Internal combustion engines - Piston rings - Part 8: Rectangular rings made of steel
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J92
Classification of International Standard: 27.020
Word Count Estimation: 26,212
Date of Issue: 2022-10-14
Date of Implementation: 2023-02-01
Older Standard (superseded by this standard): GB/T 1149.8-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 1149.8-2022: Internal combustion engines - Piston rings - Part 8: Rectangular rings made of steel

---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.
Internal combustion engines -- Piston rings -- Part 8.Rectangular rings made of steel ICS 27.020 CCSJ92 National Standards of People's Republic of China Replacing GB/T 1149.8-2008 Internal combustion engine piston rings Part 8.Rectangular steel rings Published on 2022-10-12 2023-02-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Overview 1 5 Type and marking example 1 5.1 R-type cylindrical rectangular ring 1 5.2 B-type symmetrical barrel face rectangular ring 2 5.3 BA type asymmetric barrel face rectangular ring h1≥1.2mm 4 5.4 M-type tapered rectangular ring 5 6 General Features 6 6.1 R-type cylindrical rectangular ring 6 6.2 B-type barrel face rectangular ring 7 6.3 BA type asymmetric barrel face rectangular ring h1≥1.2mm 8 6.4 M-type tapered rectangular ring 9 6.5 R, B, BA and M rings (positive twist) inner chamfer on the upper side 11 6.6 M-ring with slope of M3~M5 (anti-twist) inner chamfer on the lower side 11 6.7 R, B, BA and M-ring inner and outer edge rounding 12 6.8 R, B, BA and M-rings (fully plated and inlaid) Plating/Coating Thickness 13 6.9 R, B, BA and M-ring nitride layer depth 13 7 Elasticity coefficient 14 8 Size 14 Reference 22

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 of Standardization Documents" drafted. This document is Part 8 of GB/T 1149 "Piston Rings for Internal Combustion Engines". GB/T 1149 has published the following parts. --- Part 1.General rules; --- Part 2.Terminology; --- Part 3.Material Specifications; --- Part 4.Quality requirements; --- Part 5.Inspection methods; --- Part 6.Cast iron scrapers; --- Part 7.Rectangular cast iron rings; --- Part 8.Rectangular steel ring; --- Part 9.Trapezoidal cast iron rings; --- Part 10.Trapezoidal steel rings; --- Part 11.Wedge-shaped cast iron rings; --- Part 12.Wedge-shaped steel rings; --- Part 13.Oil rings; --- Part 14.Helical spring oil ring; --- Part 15.Thin cast iron coil spring oil ring; --- Part 16.Steel belt combination oil ring. This document replaces GB/T 1149.8-2008 "Piston Rings for Internal Combustion Engines - Part 8.Rectangular Steel Rings", and GB/T 1149.8-2008 In contrast, except for structural adjustments and editorial changes, the main technical changes are as follows. --- Increased the specifications of the rectangular steel ring with a ring height of 0.8mm and related dimensional parameters (see 5.2.1, 6.7 and Chapter 8); --- Added PVD surface treatment and related content (see 6.1.1, 6.2.1, 6.3.1, 6.4.1.1, 6.8 and Chapter 7); --- Standardized the expression in the chart (see the full text chart). This document is equivalent to ISO 6622-2.2013 "Piston Rings for Internal Combustion Engines - Part 2.Rectangular Steel Rings". A chapter "Terms and Definitions" has been added to this document. The following minimal editorial changes have been made to this document. --- In order to harmonize with the current standard, the standard name is changed to "Piston Rings for Internal Combustion Engines - Part 8.Rectangular Steel Rings". Please note that some content of this document may be patented. The issuing agency 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 Technical Committee for Standardization of Internal Combustion Engines (SAC/TC177). This document is drafted by. Anqing Dibotz Piston Ring Co., Ltd., Fujian Dongya Machinery Co., Ltd., Yizheng ASIMCO Double Ring Piston Ring Co., Ltd., Commercial Vehicle Technology Center of SAIC Motor Corporation Limited, Shanghai Internal Combustion Engine Research Institute Co., Ltd., Shanghai Motor Vehicles Testing and Certification Technology Research Center Co., Ltd. The main drafters of this document. Wang Xing, Ji Binjie, Li Kaishun, Zhong Junjie, Qiao Liangliang, Zheng Jian, Cheng Weisheng, Li Xijian, Yin Congwei, Yu Zhang. The previous versions of this document and its superseded documents are as follows. ---First published in.1993 as GB/T 14222-1993; --- During the first revision in.2008, the document number was changed to GB/T 1149.8-2008; ---This is the second revision.

Introduction

GB/T 1149 "Piston Rings for Internal Combustion Engines" is a national standard that guides the design, inspection and use of piston rings for internal combustion engines in my country. Seventeen parts consist of. --- Part 1.General rules; --- Part 2.Terminology; --- Part 3.Material Specifications; --- Part 4.Quality requirements; --- Part 5.Inspection methods; --- Part 6.Cast iron scrapers; --- Part 7.Rectangular cast iron rings; --- Part 8.Rectangular steel ring; --- Part 9.Trapezoidal cast iron rings; --- Part 10.Trapezoidal steel rings; --- Part 11.Wedge-shaped cast iron rings; --- Part 12.Wedge-shaped steel rings; --- Part 13.Oil rings; --- Part 14.Helical spring oil ring; --- Part 15.Thin cast iron coil spring oil ring; --- Part 16.Steel belt combination oil ring; --- Part 17.Steel coil spring oil ring. Part 1~Part 5 of GB/T 1149 stipulates the common content of all piston ring products, and Part 6~Part 17 stipulates The characteristics of different types of piston rings of different materials are presented. This document gives a wide range of general characteristics of piston rings and parameters in the specification table. When designing, the designer should Select specific working conditions. Before designing and selecting piston rings, designers should refer to other parts of GB/T 1149. Internal combustion engine piston rings Part 8.Rectangular steel rings

1 Scope

This document specifies the basic dimensions of rectangular steel piston rings with piston ring types R, B, BA and M (hereinafter referred to as "rectangular steel rings") feature. This document applies to rectangular steel rings for reciprocating internal combustion engines for road vehicles and other applications with cylinder diameters from 30mm to 160mm.

2 Normative references

There are no normative references in this document.

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Overview

The type of rectangular steel ring is shown in Table 1~Table 3 and Figure 1~Figure 4, and the general features and dimensions are shown in Table 4~Table 10 and Figure 5~Figure 22.different type The elastic coefficient of the steel ring is shown in Table 11 and Table 12, and the dimensions and elastic force of the rectangular steel ring are shown in Table 13.

5 Examples of styles and markings

5.1 R-type cylindrical rectangular ring 5.1.1 General characteristics The general characteristics of the R-ring are shown in Figure 1. See Table 13 for dimensions and spring force. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 1149.8-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 1149.8-2022_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 1149.8-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 1149.8-2022_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 1149.8-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1149.8-2022 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.