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GB/T 6481-2016: Hollow hexagonal drill rods with tapered connection for rock drilling
Status: Valid GB/T 6481: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6481-2016 | English | 199 |
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3 days [Need to translate]
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Hollow hexagonal drill rods with tapered connection for rock drilling
| Valid |
GB/T 6481-2016
|
| GB/T 6481-2002 | English | 279 |
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3 days [Need to translate]
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Hollow hexagonal drill rods with tapered connection for rock drilling
| Obsolete |
GB/T 6481-2002
|
| GB/T 6481-1994 | English | 279 |
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3 days [Need to translate]
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Hollow hexagonal drill rods with tapered connection for rock drilling
| Obsolete |
GB/T 6481-1994
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| GB 6481-1986 | English | 199 |
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2 days [Need to translate]
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Hollow hexagonal drill rods for percussive drilling
| Obsolete |
GB 6481-1986
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PDF similar to GB/T 6481-2016
Standard similar to GB/T 6481-2016 GB/T 6723 GB/T 6725 GB/T 6728 GB/T 6480 Basic data | Standard ID | GB/T 6481-2016 (GB/T6481-2016) | | Description (Translated English) | Hollow hexagonal drill rods with tapered connection for rock drilling | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H44 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 10,185 | | Date of Issue | 2016-12-13 | | Date of Implementation | 2017-09-01 | | Older Standard (superseded by this standard) | GB/T 6481-2002 | | Regulation (derived from) | National Standard Notice No.66 of 2016 | | Issuing agency(ies) | General Administration of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 | GB/T 6481-2016: Hollow hexagonal drill rods with tapered connection for rock drilling---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.
Hollow hexagonal drill rods with taperd connection for rock drilling
ICS 77.140.60
H44
National Standards of People's Republic of China
Replace GB/T 6481-2002
Drilling rods are used to connect hollow hexagonal drill rods
2016-12-13 released
2017-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 6481-2002 "Drilling rods with pyramid-connected hollow hexagonal drill rods", compared with GB/T 6481-2002
The changes are as follows.
--- "Figure 1" 5 - drill rod length "modified to" drill rod effective length ", with La said; increase the" drill rod length ", said L;
--- clearly Table 2 for the drill rod delivery length, and domestic and foreign drill rods to pay the length of the different notes;
Change the size of "d6" in Figure 3 to "D5" and "C" to "C1", and change the size of "
C2 ";
Change the "C" allowable deviation from "± 2.0" to "± 0.5"; change H22, H25, and "
Increase the "X" and "Y" sizes; increase the H22, H25 on the D1
Note 2;
--- remove the original table 4 "forging drill rod cone" and "d6" size; increase the taper of 11 ° H22 machine processing cone size;
--- "6.3 Rod end of the tail handle 30mm hardness HRC49 ~ HRC57" to "6.2 Rod end of the tail
30mm hardness HRC48 ~ HRC60 ".
This standard is proposed by China Iron and Steel Industry Association.
This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183).
The drafting unit of this standard. Shougang Guiyang Special Limited Liability Company, Metallurgical Industry Information Standards Institute, Iron and Steel Research Institute.
The main drafters of this standard. Xiong Jiaze, Yang Yun, Wang Yujie, Wang Zhusheng, Liu Baoshi, Hu Ruhao, Dong Xinye.
This standard replaced the previous version of the standard release.
GB/T 6481-1986, GB/T 6481-1994, GB/T 6481-2002.
Drilling rods are used to connect hollow hexagonal drill rods
1 Scope
This standard specifies the ordering content, specification code, shape and size, technical requirements, test of the hollow hexagonal drill rod with cone
Methods, inspection rules, packaging, signs and quality certificates.
This standard applies to the side of the nominal size of 19mm, 22mm, 25mm rock with a cone to connect hollow hexagonal drill rod.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1. Test methods (A, B, C, D, E, F, G, H, K, N, T)
ruler)
GB/T 224 Determination of decarburization depth of steel
GB/T 1182 Geometrical Product Specifications (GPS) Geometric tolerances Shape, orientation, position and runout Tolerance
GB/T 1301 hollow steel for drilling rods
GB/T 2101 steel acceptance, packaging, marking and quality of the general provisions of the certificate
General technical requirements for delivery of steel and steel products GB/T 17505
3 order content
The contract or order ordered in accordance with this standard shall include the following.
a) Standard number;
b) product name;
c) specification code;
d) shape and size;
e) special requirements.
4 specification code
Product specification code by the H and drill rod tail handle to the nominal size of the composition, H for hexagonal (Hexagonal) of the English first letter, specifications
The code is shown in Table 1.
Table 1 Product specification code
Specification code tail handle to the nominal size/mm
H19 19
H22 22
H25 25
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