GB/T 2527-2008 English PDF

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GB/T 2527-2008: Cemented carbide inserts for mining and oil-field bits
Status: Valid

GB/T 2527: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2527-2008	349	Add to Cart	3 days	Cemented carbide inserts for mining and oil-field bits	Valid
GB/T 2527-1989	439	Add to Cart	4 days	Hard metal (carbide) inserts for mining and oil-field rock bits	Obsolete

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GB/T 11101   GB/T 6883   GB/T 3462   GB/T 6887   GB/T 2081   

Basic data

Standard ID: GB/T 2527-2008 (GB/T2527-2008)
Description (Translated English): Cemented carbide inserts for mining and oil-field bits
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H72
Classification of International Standard: 77.160
Word Count Estimation: 15,184
Date of Issue: 2008-06-09
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 2527-1989
Quoted Standard: GB/T 5242; GB/T 5243
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
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 mine, oilfield drill with carbide teeth requirements, inspection rules, test methods, signs, packaging, transport, storage and purchase order (or contract) content. This standard applies to mining cone bit boring and oil use, DTH drill bits Diamond teeth with hard rough.

GB/T 2527-2008: Cemented carbide inserts for mining and oil-field bits

---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.
ICS 77.160 H72 National Standards of People's Republic of China Replacing GB/T 2527-1989 Mine, oil field drill bit with carbide teeth 2008-06-09 release 2008-12-01 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 replaces GB/T 2527-1989 "Carbide teeth for mining and oilfield bits". This standard compared with GB/T 2527-1989, the main changes are as follows. - C (plain crested teeth), B (side wedge), S (spoon-shaped teeth), X (wedge-shaped teeth), Z (conical teeth), Q (spherical teeth) Renamed CP, CB, CS, CX, CZ, CQ; (C-1 (Cylindrical), C-1 (Cylindrical), C-1 (Cylindrical), C-1 (Cylindrical) Type --- on the diameter, height size of the allowable deviation is divided into ordinary level, higher level; --- to strengthen the tooth radius of the arc, chamfer size to allow deviation; - the depth of the falling edge of the teeth to relax, and increase the teeth of the burr, pitting (or hemp) the depth of the provisions; --- delete some of the production or production of very few models, adding some of the larger production models. Appendix A to this standard is an informative appendix. This standard is proposed by China Nonferrous Metals Industry Association. This standard by the National Nonferrous Metals Standardization Technical Committee. This standard is drafted by Zigong Cemented Carbide Co., Ltd. The main drafters of this standard. Zhou Mingzhi, Xue Lin. This standard replaced the previous version of the standard release. --- GB/T 2527-1989. Mine, oil field drill bit with carbide teeth

1 Scope

This standard specifies the requirements of the cemented carbide teeth for mines and oilfields, inspection rules, test methods, marking, packaging, transportation, storage and Order (or contract) content. This standard applies to the use of the mine drilling and oil extraction of the cone bit, the use of deep hole drill bit with a carbide drill bit rough.

2 normative reference documents

The terms of the following documents are incorporated by reference in this standard and are the terms of this standard. Any reference to the date of the document, (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard Whether the latest version of these files can be used, and the most recent version of the referenced document, which is not dated, applies to this standard. Test rules and test methods for cemented carbide products GB/T GB/T 5243 Carbide products are marked, packaged, transported and stored

3 request

3.1 Product Classification The product is divided into CB (side wedge), CP (flat top tooth), CQ (spherical tooth), CQ-1 (double chamfer spherical), CS (spoon) CS-1 (Cylindrical), CX (wedge-shaped teeth), CX-1 (concave wedge-shaped teeth), CZ (conical teeth), CZ-1 (spherical conical teeth) ten types. 3.2 Product model indicates rule 3.2.1 After the type code (CB, CP, CQ, CS, CX, CZ), add two digits of diameter (less than two integers plus "0" (Less than two integers in front of the plus "0" fill, not an integer when the removal of the integer Decimal). 3.2.2 When the main parameters (diameter, height) of the carbide teeth are the same and other parameters (such as angles) are different, then the model is followed by A Show the difference. 3.2.3 The new type is shown in the model suffix -1. 3.2.4 Model See the example. Example. 3.3 Chemical composition The chemical composition of the product is determined by consultation between the supplier and the purchaser. ......

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