MT/T 321-2025 Active Industry standards-Coal

MT/T 321-2025 Helical drum for shearers

MT/T 321-2025 Helical drum for shearers

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

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Basic Information

Standard Code: MT/T 321-2025

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Special equipment and supplies for coal mines

ICS Name: Other mining equipment

Publish Date: 2025-06-30

Implement Date: 2025-12-30

Pages: 24 pages

Scope

This document specifies the technical requirements such as the performance, structure, materials, and quality of the screw roller of coal mining machines (hereinafter referred to as "rollers"), describes the corresponding sampling and testing methods, and stipulates the aspects of marking, packaging, transportation, and storage. It also provides a classification that facilitates the technical specifications.
This document is applicable to rollers used in underground coal mining operations.

Development Information

Word Count: 27 Thousand words Pages: 24 pages

Replace the following standards

MT/T 321-2004 Drill-and-scrape rotor cylinder of the coal mining machine MT/T 140-2004 The connection method and parameters of the coal mining machine cylinder

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 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 1591-1994 High strength low alloy structural steels GB/T 1591-2008 High strength low alloy structural steels GB/T 1591-2018 High strength low alloy structural steels GB/T 2651-1989 Method of tensile test for welded joint GB/T 2651-2008 Tensile test method on welded joints GB/T 2651-2023 Destructive tests on welds in metallic materials—Transverse tensile test GB/T 10111-1988 Methods for random sampling by utilizing dices of random number GB/T 10111-2008 Generation of random numbers and procedures applied to sampling inspection for product quality GB/T 11352-1989 Carbon steel castings for general engineering purposes GB/T 11352-2009 Carbon steel castings for general engineering purpose GB/T 13306-1991 Plates GB/T 13306-2011 Plates GB/T 13384-1992 General specifications for packagings of mechanical and electrical products GB/T 13384-2008 General specifications for packing of mechanical and electrical product GB/T 15663.10-2008 Terms relating to coal mining—Part 10:Winning machinery and developing machinery AQ 1043-2007 Mining Product Safety Mark Identification JB/T 5000.3-2007 Heavy Machinery General Technical Conditions Part 3: Welding Parts MT 246-1996 coal mining cutting tooth MT/T 246-1991 coal mining cutter teeth MT/T 246-2006 Extraction equipment cutting bits MT 247-1996 coal mining gear base MT/T 247-1991 coal mining gear tooth base MT/T 247-2006 Drilling machine gear base MT/T 662-1997 Spraying nozzle for shearer—Outlet diameters and connecting threads MT/T 662-2007 Spraying nozzle for shearer-Outlet diameters and connecting threads

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