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• GB/T 40565.1-2024 (identical to ISO 7241:2023)
It strictly complies with the dimensional, structural and performance requirements for general-purpose hydraulic quick couplings. It enables smooth quick connection and disconnection, precise engagement and jamming-free operation, and fits pipeline specifications of mainstream hydraulic systems with excellent universality.
• GB/T 7939.2-2024 (identical to ISO 18869:2017)
Full-scale tests including pressure resistance, sealing performance, repeated plugging and unplugging, and high-low temperature adaptability are conducted in accordance with national and international standard test criteria, guaranteeing stable product performance under complex working conditions.
• Superior corrosion and oxidation resistance: the compact and uniform zinc-nickel alloy coating features exceptional adhesion, effectively isolating moisture, acid, alkali and salt spray erosion. Its corrosion resistance far outperforms conventional galvanization. The product resists rusting, discoloration and peeling during long-term service, adapting harsh working environments such as outdoor sites, mines, chemical plants and humid workshops.
• Wear resistance and smooth connection: the coating boasts moderate hardness and low friction coefficient, minimizing abrasion caused by frequent coupling plugging and unplugging. It maintains smooth operation and accurate locking without jamming or looseness, ideal for high-frequency assembly and disassembly scenarios.
• High stability for high and low pressure conditions: the surface coating does not impair structural precision and pressure resistance of the coupling body. It avoids shedding and oil circuit blockage, sustaining reliable sealing performance amid high pressure impact and frequent start-stop cycles to prevent leakage and pressure drop failures.
• Exquisite appearance and reliable quality: the smooth and even coating surface is free of burrs and defects, balancing aesthetic appeal and practicality. It complies with anti-corrosion and environmental protection standards for industrial equipment application.
• Tool-free quick assembly and disassembly: Designed in line with quick coupling structural standards, it supports one-touch plugging, unplugging and fast locking without auxiliary tools. It greatly improves the efficiency of pipeline assembly and equipment maintenance, cutting labor and time costs.
• Leak-tight sealing design: Equipped with high-precision seals and standardized structural dimensions, the coupling achieves tight fitting and superior sealing. No oil leakage or pressure loss occurs under high pressure, maintaining stable hydraulic system pressure and reducing energy consumption.
• High pressure resistance and high safety: Forged from premium steel, the product features high structural strength and excellent pressure resistance. It is applicable to hydraulic systems ranging from conventional to high pressure levels, with strong impact and deformation resistance to avoid cracking and falling off risks.
• Wide compatibility and easy replacement: Fully compliant with national and ISO dimensional standards, it can directly replace mainstream couplings of the same specification on the market. No pipeline modification or adaptation is required for effortless installation and replacement.
