MT 644-1997
Active
MT/T 521-2025
Active
Industry standards-Coal
MT/T 521-2025 Standard drill rod for drilling in underground coal mine
MT/T 521-2025 Standard drill rod for drilling in underground coal mine
Price:
$ 49.00
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
Pages:
28 pages
Scope
This document specifies the types and models, parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of conventional drill rods used in underground coal mine drilling.
This document is applicable to the design, manufacture, and inspection of conventional drill rods used in underground coal mine drilling.
Development Information
Replace the following standards
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 646-1997
Abolished
MT 646-1997 Frictional metal prop
MT 668-1997
Replaced
MT 668-1997 Technical Conditions for Flame-Retardant Steel-Mesh-Core Conveying Belt for Coal Mines
MT 669-1997
Active
MT 669-1997 Technical condition of fire-resistant steel-cable conveyor-belt in coal mining
MT/T 154.7-1997
Active
MT/T 154.7-1997 Model designation of separating equipment for coal
MT/T 660-1997
Active