Technical Specifications for Forged Parts of the Valve Box of the Fracturing Pump Model T/UNP 602-2025

Scope

Main technical content: This standard specifies the technical requirements and test methods for forged parts of the valve box of fracturing pumps. The technical requirements include: using 4Cr14Mo steel for the material, with clear chemical composition; no cracks or other defects in the appearance, and corresponding provisions for surface roughness; dimensional tolerances shall be in accordance with the design drawings and standards; mechanical properties after heat treatment shall meet the indicators under normal and high temperature conditions; internal quality shall be regulated from aspects such as surface inspection, ultrasonic testing, magnetic particle testing, low magnification microstructure, and grain size; the corrosion resistance requirement is that the corrosion rate shall be ≤0.1mm/a after a 240-hour salt spray test. The test methods cover chemical analysis, visual inspection, and instrument measurement. The inspection is divided into factory inspection and type inspection, with clear inspection items, judgment criteria, and sampling rules. There are also specific requirements for marking, packaging, transportation, and storage to ensure product quality and circulation safety.

Development Information

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