Standard No.:	GB 25974.1-2026
English Name:	Powered support for coal mine—Part 1: General technical specification
Chinese Name:	煤矿用液压支架 第1部分：通用技术条件
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2026-02-27
Implemented on:	2027-3-1
Status:	to be valid
Superseding:	GB 25974.1-2010 Powered support for coal mine—Part 1:General specification
Target Language:	English
File Format:	PDF
Word Count:	17000 words
Translation Price(USD):	510.0
Delivery:	via email in 1~5 business day

GB 25974.1-2026 Powered support for coal mine—Part 1: General technical specification English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS CCS National Standard of the People's Republic of China ‌GB/T 25974.1-2026 Powered support for coal mine - Part 1: General technical specification 煤矿用液压支架 第1部分：通用技术条件 Issue date: 2026-02-27 Implementation date: 2027-03-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative References 3 Terms and Definitions 4 Requirements 4.1 General Requirements 4.2 Appearance Quality 4.3 Operational Performance 4.4 Sealing Performance 4.5 Support Performance 4.6 Adaptability Performance 4.7 Yield Performance 4.8 Structural Strength 4.9 Durability Performance 4.10 Hydraulic Components 4.11 Materials 4.12 Welding 5 Test Methods 5.1 Test Conditions 5.2 Lifting Points 5.3 Appearance Quality 5.4 Operational Performance 5.5 Sealing Performance 5.6 Support Performance 5.7 Adaptability Performance 5.8 Yield Performance 5.9 Structural Strength 5.10 Durability Performance 5.11 Hydraulic System and Support Integration 5.12 Materials 6 Inspection Rules 6.1 Classification of Inspections Powered Support for Coal Mine Part 1: General Technical Conditions 1 Scope This document defines the terms for powered support for coal mines, specifies its requirements, marking, packaging, transport, storage, and use and maintenance. It establishes inspection rules and describes corresponding test methods. This document applies to the research and development, design, production, and testing of powered support for coal mines (hereinafter referred to as support). 2 Normative References The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 228.1—2021 Metallic materials — Tensile testing — Part 1: Method of test at room temperature GB/T 229—2020 Metallic materials — Charpy pendulum impact test method GB/T 3836.1—2021 Explosive atmospheres — Part 1: Equipment — General requirements GB/T 9969 General principles for preparation of instructions for use of industrial products GB/T 11352 Carbon steel castings for general engineering use GB/T 12361 General technical requirements for steel die forgings GB/T 12467 (all parts) Quality requirements for fusion welding of metallic materials GB/T 13264—2008 Sampling procedures and tables for small-lot inspection by attributes for percent nonconforming items GB/T 25974.2—2010 Powered support for coal mine — Part 2: Specification for prop and jack GB/T 25974.3—2010 Powered support for coal mine — Part 3: Hydraulic control system and valves MT/T 76 Emulsifying oil, concentrate and high water content hydraulic fluid for powered support MT/T 98 Inspection specification for hose and hose assembly for hydraulic powered support MT/T 1273—2025 Technical requirements for manufacturing of structural components of powered support MT/T 986 U-shaped pin quick coupling and accessory for mining 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 powered support Equipment that uses hydraulic power to achieve movement such as lifting and advancing, for roof support. 3.2 2-leg shield powered support A powered support that is supported by two legs between the canopy and the base and has a caving shield. 3.3 4-leg shield powered support A powered support that is supported by four legs between the canopy and the base and has a caving shield. 3.4 check support A powered support that is supported by legs between the canopy and the base without a caving shield. 3.5 powered support in A class Powered supports designed for working faces with an annual output of over 5 million tons or those required by users for high reliability design. 3.6 powered support in B class Powered supports other than Class A. 3.7 basic shield support General hydraulic supports used in the middle part of the coal mining face. 3.8 support components The main components of the support that bear and transmit roof pressure. NOTE: Includes the canopy, caving shield, linkages or legs, and base. 3.9 canopy The component of the support that is in direct contact with the roof and transmits the supporting force. NOTE: A single or combined component. 3.10 base The component of the support that is in direct contact with the floor and transmits the supporting force of the support to the floor. NOTE: A single or combined component. 3.11 goaf shield The component of the support that directly connects the canopy and the base (or through linkages) to transmit the support load and the pressure from the caved roof rock, and shields the working face from the goaf. 3.12 linkage A component that connects the goaf shield and the base to form a four-bar linkage. 3.13 support accessories Components that do not bear the supporting force of the support but are necessary to ensure the support's functionality. 3.14 advancing mechanism The device that is hinged at the front end of the support canopy and is used to support the coal wall, preventing debris and coal from falling into the working face area at the front of the support.