GB/T 6481-2016 English PDF

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GB/T 6481-2016: Hollow hexagonal drill rods with tapered connection for rock drilling
Status: Valid

GB/T 6481: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6481-2016	199	Add to Cart	3 days	Hollow hexagonal drill rods with tapered connection for rock drilling	Valid
GB/T 6481-2002	279	Add to Cart	3 days	Hollow hexagonal drill rods with tapered connection for rock drilling	Obsolete
GB/T 6481-1994	279	Add to Cart	3 days	Hollow hexagonal drill rods with tapered connection for rock drilling	Obsolete
GB 6481-1986	199	Add to Cart	2 days	Hollow hexagonal drill rods for percussive drilling	Obsolete

Similar standards

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Older Standard (superseded by this standard): GB/T 6481-2002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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