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GB/T 12718-2009: High-tensile steel chains (round link) for mining
Status: Valid GB/T 12718: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12718-2009 | English | 579 |
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High-tensile steel chains (round link) for mining
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GB/T 12718-2009
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| GB/T 12718-2001 | English | 799 |
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High-tensile steel chains (round link) for mining
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GB/T 12718-2001
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| GB/T 12718-1991 | English | RFQ |
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High-tensile steel chains (round link) for mining
| Obsolete |
GB/T 12718-1991
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PDF similar to GB/T 12718-2009
Basic data | Standard ID | GB/T 12718-2009 (GB/T12718-2009) | | Description (Translated English) | High-tensile steel chains (round link) for mining | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J81 | | Classification of International Standard | 21.220.30 | | Word Count Estimation | 25,283 | | Date of Issue | 2009-10-30 | | Date of Implementation | 2010-04-01 | | Older Standard (superseded by this standard) | GB/T 12718-2001 | | Quoted Standard | GB/T 702; GB/T 905; GB/T 2828.1-2003; GB/T 2829-2002; GB/T 3077; GB/T 3078; GB/T 3159; GB/T 8170; GB/T 10111 | | Adopted Standard | ISO 610-1990, NEQ | | Regulation (derived from) | National Standard Approval Announcement 2009 No.12 (Total No.152) | | 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 terms and definitions for mining high-intensity ring chain, test methods, , Type size, technical requirements for inspection rules and signs, packaging, transport and storage. This standard applies to coal mine scraper conveyor, scraper loader, roadheader, plow, shearer and other mechanical traction chain, does not apply for the lifting chain and hanging chains. | GB/T 12718-2009: High-tensile steel chains (round link) for mining---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.
High-tensile steel chains (round link) for mining
ICS 21.220.30
J81
National Standards of People's Republic of China
Replacing GB/T 12718-2001
Mine high-intensity ring chain
(ISO 610.1990, High-tensilesteelchains (roundlink) for
chainconveyorsandcoalploughs, NEQ)
Posted 2009-10-30
2010-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard corresponds to ISO 610.1990 "scraper conveyors and coal plows with high-intensity ring chain" (in English), this Standard with ISO 610.
1990 non-equivalent.
This standard replaces GB/T 12718-2001 "Mining High Strength Ring Chain."
This standard compared with GB/T 12718-2001 main changes are as follows.
--- Adjust the tag content representation method (see 4.4);
--- Deleting the expression "when less than 30,000 times, the unit may not be the specimen fracture," the [2001 version 5.7.3c)];
--- Increased the sample position to make long chain sample requirements (see 6.2);
--- Increasing the technical requirements of the test device (see 7.1);
You do not need to pull off a predetermined ring chain (see 7.3.3) when --- adds test;
--- Added experimental data processing requirements (see 7.8);
--- Clear surface quality inspection and dimensional inspection of substandard type classification (see 8.5.1,8.5.2);
--- Increase the inspection process anomalies approach made provision (see 8.7).
Appendix C of this standard is a normative appendix, Appendix A, Appendix B is an informative annex.
This standard is proposed and managed by the China Coal Industry Association.
This standard is drafted by. Taiyuan Institute of Coal Research Institute.
Participated in the drafting of this standard. Ningxia World Benniu Industrial Group Co., Ltd., China Coal Zhangjiakou Coal Mining Machinery Co., Ltd.
The main drafters of this standard. Liu wind and thunder, Shi Lan, Zhuangzhan Bin, Han Junling, Cai Yuping, Huang Po, Wang Qing Yuan.
This standard replaces the standards previously issued as follows.
--- GB/T 12718-1991, GB/T 12718-2001.
Mine high-intensity ring chain
1 Scope
This standard specifies the mining high-intensity ring chain (hereinafter referred to as ring chain) terms and definitions, type size, technical requirements, test methods,
Inspection rules and signs, packaging, transportation and storage.
This standard applies to coal mine scraper conveyor, scraper loader, roadheader, coal plows, shearer and other mechanical traction
Chain, does not apply for the lifting chain and chain suspension.
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 702 hot-rolled steel bars - Dimensions, shape, weight and tolerances (GB/T 702-2008, ISO 1035-1 ~ 1035-4. 1980,
MOD)
GB/T 905 cold-drawn round, square, hexagonal size, shape, weight and tolerances (GB/T 905-1994, neqISO 286-
1. 1988)
GB/T 2828.1-2003 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch test sample
Program (ISO 2859-1.1999, IDT)
GB/T 2829-2002 periodic inspection Sampling procedures and tables (suitable for process stability test)
GB/T 3077 alloy steel
GB/T 3078 quality structural steel cold drawn
GB/T 3159 hydraulic universal testing machine
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
GB/T 10111 random number generation and its application in product quality sampling in
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
3.2
In the tensile test the finished chain can withstand the maximum load.
3.3
To test the finished chain, under no circumstances exceed the specified elongation should be able to withstand the specified load.
3.4
Record the measured length or strain gage installation, the load required by the chain tensioner.
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