T/UNP 814-2025 Active Group standards

T/UNP 814-2025 Technical specification for manufacturing of cast and forged parts of hydraulic supports for mining machinery

Publish Date: 2025-09-15 Implement Date: 2025-09-15 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: T/UNP 814-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: \nTunneling and laying pipeline equipment

Publish Date: 2025-09-15

Implement Date: 2025-09-15

Scope

This standard applies to the manufacture of cast and forged parts for hydraulic supports used in mining machinery. It specifies the forging techniques (including standards for selecting raw materials, requirements for forging molds and process parameters, heat treatment specifications, dimensional tolerances for different types of forgings, surface quality standards, and inspection requirements), casting techniques (covering the grades and compositions of raw materials, dimensional tolerances, machining allowances, classification of castings, surface quality, and rules for repairing defects), inspection methods (including the basis for inspecting chemical composition, mechanical properties, and non-destructive testing), and marking specifications for cast and forged parts. It provides comprehensive and detailed technical guidance for quality control of cast and forged parts for hydraulic supports used in mining machinery.