GB/T 13343-2008 PDF English
US$150.00 · In stock · Download in 9 secondsGB/T 13343-2008: Blast hole tricone rock bits Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 13343: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 13343-2008 | English | 150 |
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Blast hole tricone rock bits
| Valid |
| GB/T 13343-1992 | English | 319 |
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Blast hole tricone rock bits
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 13343-2008
GB/T 13343-2008: Blast hole tricone rock bits---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT13343-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 73.100.10
D 92
Replacing GB/T 13343-1992
Blast hole tricone rock bits
Issued on. JULY 09, 2008
Implemented on. FEBRUARY 01, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 4
4 Product classification... 6
5 Technical requirements... 7
6 Test methods... 9
7 Inspection rules... 10
8 Marking, packaging, transportation and storage... 11
Foreword
This Standard replaces GB/T 13343-1992 “Blast hole tricone rock bits”.
Compared with GB/T 13343-1992, the main changes of this Standard are as
follows.
- In the technical requirements, ADD the requirements for welding electrode,
weld tensile strength and weld quality after the bit is assembled;
- Further STANDARDIZE the content of test methods and inspection rules;
- ADD the packaging requirements for bits;
- CANCEL the color requirements for protective paint.
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee
on Mining Machinery of Standardization Administration of China (SAC/TC 88).
Drafting organization of this Standard. Luoyang Mining Machinery Engineering
Design and Research Institute Co., Ltd.
Main drafters of this Standard. Zhou Shengyong, Guo Ming, Yang Xianli, Wang
Yadong, Huang Jialin.
The previous released version replaced by this Standard is as follows.
- GB/T 13343-1992.
Blast hole tricone rock bits
1 Scope
This Standard specifies the product classification, technical requirements, test
methods, inspection rules and marking, packaging, transportation and storage
of blast hole tricone rock bits.
This Standard is applicable to air-cooled and gas pressure deslagging tricone
bits (hereinafter referred to as bits). The bit is mainly used for piercing blast hole
in metallurgy, coal, chemical engineering, building materials, mining, etc.
2 Normative references
The following documents contain the provisions which, through reference in this
Standard, become the provisions of this Standard. For dated references, their
subsequent amendments (excluding corrigendum) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB 150-1998 Steel pressure vessels
GB/T 2527 Hard metal (carbide) inserts for mining and oil-field rock bits
GB/T 9253.1-1999 Threads on rotary shouldered connections for petroleum
industry
3 Terms and definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1
air-cooled and gas pressure deslagging bit
A bit cools the bearings and removes the slag from the blast hole with
compressed air
3.2
integrated bit
A bit that is directly welded together by three jaws assembled with cones.
4 Product classification
4.1 According to assembly forms, bits can be divided into.
4.2 According to structural characteristics, bits are divided into steel tooth bits
and inserted bits (see Table 1).
4.3 According to scope of use, bits are divided into 8 series (see Table 1).
4.5 Model and basic parameters
4.5.1 Model description
5 Technical requirements
5.1 Bits shall comply with the requirements of this Standard and be
manufactured in accordance with the drawings and technical documents
approved by the prescribed procedures.
Bit diameter D Diameter deviation Thread specification A B
5.2 The nozzle of bits is recommended to be assembled type.
5.3 When the bit is drilled into the water burst blast hole, the bit shall be provided
with means to prevent mud from entering the bearing.
5.4 Cones and claws are made of alloy steel.
5.5 Die forgings are recommended for cones and jaw blanks.
5.6 The threaded joint body of separated bits is made of high-quality carbon
steel or steel castings. Steel castings shall be free of cracks. After the surface
is cleaned, it shall be smooth and flat. There shall be no defects such as
shrinkage, burnt-on sand and slag, which affect the strength and appearance
of the product.
5.7 Carbide teeth used in cone bits shall comply with the requirements of GB/T
2527.
5.14 The height tolerance of each cone to the end face of the shoulder of
threaded joint of bits shall comply with the requirements of Table 5.
6 Test methods
6.1 The diameter of bits is measured with a measuring ring.
6.2 Inspection of the assembly quality of bits.
6.3 The running time of the test bench load test shall be not less than 4 h.
7 Inspection rules
7.1 Inspection classification
The inspection is divided into factory-exit inspection and type inspection.
7.2 Factory inspection
7.3 Type inspection
In any of the following cases, no less than 3 bits shall be taken on the test bench
or at the site for type inspection.
7.4 Type inspection shall include all requirements of this Standard.
8 Marking, packaging, transportation and storage
8.1 The non-working end face of the threaded joint of each bit shall be printed
with the following markings.
8.2 The connecting thread and nozzle seat hole shall be applied with anti-rust
grease and shall be protected.
8.3 In addition to connecting threads, the other surfaces of bits shall be painted
with protective paint.
8.4 The specifications of packaging box of bits shall meet the requirements for
container transportation.
8.5 The appearance of packaging box shall have no less than the following
markings.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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