MT/T 521-2025 Active Industry standards-Coal

MT/T 521-2025 Standard drill rod for drilling in underground coal mine

Publish Date: 2025-06-30 Implement Date: 2025-12-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: MT/T 521-2025

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Geological exploration equipment

ICS Name: Other mining equipment

Publish Date: 2025-06-30

Implement Date: 2025-12-30

Publisher: 国家能源局

Technical Committee: 煤炭行业煤矿专用设备标准化技术委员会

Pages: 28 pages

Scope

本文件规定了煤矿井下钻探用常规钻杆的类型及型号、参数、技术要求、试验方法、检验规则、标志、包装、运输和贮存。
本文件适用于煤矿井下钻探用常规钻杆设计、制造和检验。

Development Information

Drafting Units:

中煤科工西安研究院(集团)有限公司、西安煤科检测技术有限公司、淮河能源控股集团有限责任公司

Drafting Persons:

田东庄、田宏杰、董萌萌、曹明、牟培英、童碧、王传留、兰菲、朱宁、李晴、党林

Word Count: 41 Thousand words Pages: 28 pages

Replace the following standards

MT/T 521-2006 Mined tunnel drill bit (MT/T 521-2006) - Conventional drill rods for coal mine roadway boring

Referenced Standards

GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 229-1994 Metallic materials—Charpy notch impact test GB/T 229-2007 Metallic materials—Charpy pendulum impact test method GB/T 229-2020 Metallic materials—Charpy pendulum impact test method GB/T 231.1-2002 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2009 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2018 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 2102-1988 Acceptance, packing, marking, and certification of pipe GB/T 2102-2006 Acceptance, packing, marking and quality certification of steel pipe GB/T 2102-2022 Acceptance,packaging,marking and quality certification for steel tubular products GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 9808-2008 Seamless steel tubes for drilling MT/T 154.1-1992 The guidelines for the preparation of coal mine electromechanical product models and management measures MT/T 154.1-2011 Coal mine electromechanical product model designation method Part 1: Guidelines

Related Standards

MT 644-1997 Active

MT 644-1997 Pneumatic support

Publish Date: 1997-11-10

MT 646-1997 Abolished

MT 646-1997 Frictional metal prop

Publish Date: 1997-11-10

MT 668-1997 Replaced

MT 668-1997 Technical Conditions for Flame-Retardant Steel-Mesh-Core Conveying Belt for Coal Mines

Publish Date: 1997-11-10

MT 669-1997 Active

MT 669-1997 Technical condition of fire-resistant steel-cable conveyor-belt in coal mining

Publish Date: 1997-11-10

MT/T 154.7-1997 Active

MT/T 154.7-1997 Model designation of separating equipment for coal

Publish Date: 1997-11-10

MT/T 660-1997 Active

MT/T 660-1997 Dimension series of vibrating screen for coal

Publish Date: 1997-11-10