• Internals: Cylinder barrel adopts GUOYUE EU/US metallurgical standard CD250 structure. Barrel material: 45#, 42CrMo, or 27SiMn. Bore honed to H8 precision with surface roughness Ra<0.4μm. Heads, base, trunnions, and pistons are exclusively made of 45# steel; no cast iron or cast steel components are used.
• Buffering: Multiple buffering options including fixed and floating buffer structures to ensure effective deceleration across various pressures and speed ranges.
• Welding: 100% ultrasonic impact treatment applied to all pressure-bearing and load-critical welds. This eliminates weld stress (removal rate ≥90%) and significantly enhances weld fatigue strength.
• Sealing: All cylinders exclusively use premium imported seals from Japan , Sweden Trelleborg, Germany Merkel, and GP. No domestic seals are utilized.
• Testing & Certification: Factory testing strictly complies with GB/T15622-2005 "Hydraulic Fluid Power - Test Methods for Cylinders" and internal premium standard Q/GAKY014-2023. Includes provision of factory test reports and product qualification certificates.
• Warranty: One-year warranty from shipment date. Free repair or replacement provided for defects arising from design or manufacturing within the warranty period.

This hydraulic cylinder features precise buffering for smooth operation, high load capacity (70-1100 tons), and customizable dimensions for varied needs. Its robust tie-rod design ensures stability, while the release-side oil control enhances efficiency. Durable construction reduces wear, making it ideal for heavy-duty, high-pressure applications with long service life.

Widely used in industrial presses, construction machinery (excavators, cranes), metal forming equipment, and heavy lifting systems. Suitable for automation lines, agricultural machinery, and mining equipment requiring controlled force and reliable performance. Its adaptability makes it perfect for custom hydraulic solutions in demanding environments where precision and durability are critical.