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GB/T 24812-2009: Forged steel lifting hooks with point and eye for use with steel chains of grade 4
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24812-2009 | English | 174 |
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Forged steel lifting hooks with point and eye for use with steel chains of grade 4
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GB/T 24812-2009
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Basic data | Standard ID | GB/T 24812-2009 (GB/T24812-2009) | | Description (Translated English) | Forged steel lifting hooks with point and eye for use with steel chains of grade 4 | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J80 | | Classification of International Standard | 53.020.30 | | Word Count Estimation | 9,985 | | Date of Issue | 2009-12-15 | | Date of Implementation | 2010-07-01 | | Quoted Standard | GB/T 6394-2002; GB/T 20652; GB/T 24814 | | Adopted Standard | ISO 4779-1986, IDT | | Regulation (derived from) | National Standard Approval Announcement 2009 No.15 (Total No.155) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the four chains forged steel hook and eye with the technical requirements. This standard applies to include a series of line with GB/T 24814 required four major chains in strength and size photogenic match specifications. | GB/T 24812-2009: Forged steel lifting hooks with point and eye for use with steel chains of grade 4
---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.
Forged steel lifting hooks with point and eye for use with steel chains of grade 4
ICS 53.020.30
J80
National Standards of People's Republic of China
GB/T 24812-2009/ISO 4779. 1986
4 chain forged hook and eye
[ISO 4779. 1986, Forgedsteelliftinghookswithpointand
eyeforusewithsteelchainsofgradeM (4), IDT]
Posted 2009-12-15
2010-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 type and size 1
Mechanical properties 3 5
Materials and Heat Treatment 3 6
7 manufacturing methods and process requirements 4
4 8 Type tests
9 5 verification test
10 manufacturer certificate 5
11 logo 5
GB/T 24812-2009/ISO 4779. 1986
Foreword
This standard is equivalent to using ISO 4779. 1986 "M (4) level chain with forged hook and eye" (in English).
This standard is equivalent translation ISO 4779. 1986.
For ease of use, this standard does the following editorial changes.
--- "This International Standard" be replaced by "this standard";
--- Instead of using the decimal point as a decimal point ",". ",";
--- Delete foreword international standards;
--- Other international standards referenced with the international standard has been adopted as the standard instead of the corresponding country.
The standard proposed by China Machinery Industry Federation.
This standard by the National Standardization Technical Committee crane (SAC/TC227) centralized.
This standard was drafted. Modern crane factory in Hangzhou, Hangzhou Wulin Machine Co., Ltd., Beijing Institute of lifting the transport machinery design
Study hospital.
The main drafters of this standard. Yangxian Hui, Zhang Yun, Cui Yuan, Lin Fukui.
GB/T 24812-2009/ISO 4779. 1986
4 chain forged hook and eye
1 Scope
This standard specifies four chains with forged steel hook and eye technical requirements.
Scope of this standard includes a series of line with GB/T 24814 stipulated four chains in strength and size relative to the main match
specification.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 6394-2002 Metal average grain size measurement method (ASTME112-96, MOD)
GB/T 20652 M (4), S (6) and T (8) chain hoists Welding Technology (GB/T 20652-2006, ISO 4778. 1981, IDT)
GB/T 24814 Short link chain hoists lifting chain with four ordinary precision chain [GB/T 24814-2009, ISO 1835. 1980,
Shortlinkchainforliftingpurposes-GradeM (4), non-calibrated, forchainslingsetc. , IDT]
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
WLL
In the general conditions, the hook is designed to withstand the maximum quality.
3.2
WL
In a particular use conditions, the hook should bear the greatest quality.
3.3
Fe
According to the provisions of Chapter 9 of the test force is applied to the hook.
3.4
Tensile testing process, the carrying capacity of the hook lost most vigorously.
4 type and size
4.1 Dimensions
The main dimensions of the hook should meet the requirements in Table 1, with the chain hook size nominal size.
In addition, it should also meet the following requirements.
a) hook hook tip should be less than the actual height of the BS hook opening size O (see Figure 1);
b) size of the opening O hook should not exceed 95% of the actual crane hook cavity diameter D;
c) as hook with locking device, it should be able to naturally reset after loading the maximum diameter of the rod through the actual size of the opening O1,
A broken line shown in FIG.
GB/T 24812-2009/ISO 4779. 1986
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