High Temp Hydraulic Cylinder 100 / 70-800 For Steel Mills Foundries

Premium Quality Hydraulic Cylinders - Quality Assured

1. 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.
2. Buffering:Multiple buffering options including fixed and floating buffer structures to ensure effective deceleration across various pressures and speed ranges.
3. 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.
4. Sealing:All cylinders exclusively use premium imported seals from Japan NOK, Sweden Trelleborg, Germany Merkel, and GP. No domestic seals are utilized.
5. 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.
6. Warranty: One-year warranty from shipment date. Free repair or replacement provided for defects arising from design or manufacturing within the warranty period.

Key Advantages:
Extreme Heat Resistance: Specialized seals (FKM/Viton) + stainless steel construction endure 300°C+ ambient temps.
Stable Long Stroke: 70mm rod with **anti-buckling guides maintains alignment in 800mm extension.
Cooling Integration: Optional water-jacket ports reduce seal degradation.
Corrosion Immunity: Hardened 17-4PH stainless rods resist scale/chemicals.
Zero-Leak Guarantee: Triple-lip gland design sustains 700 bar at red-hot conditions.

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Core Applications:
1. Steel Rolling Mills: Descaling box actuators, roller gap adjustment.
2. Foundry Machinery: Ladle tilting, furnace door rams.
3. Continuous Casting: Mold oscillator drives, slab pushers.
4. Forging Presses: Billet transfer arms, die holders.
5. Heat Treatment Lines: Quench tank lid clamps, conveyor lifts.
6. Coke Plants: Oven door seal rams, quenching car positioners.