Wuxi Chunfa Hydraulic Machinery Co., Ltd.
| Delivery Time | 30 DAYS |
| Raw Material | Stainless Steel, Carbon Steel |
| Technique | Cold Drawn, Cold Rolled |
| Surface Treatment | Polishing |
| Standard Length | 1000mm - 8000mm |
| Surface Roughness | Ra0.2-0.4 |
| Material | Chrome |
| Yield Strength | Not Less Than 520 N/MM2 |
| Brand Name | chunfa |
| Model Number | 12000DS-A |
| Place of Origin | china |
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Product Specification
| Delivery Time | 30 DAYS | Raw Material | Stainless Steel, Carbon Steel |
| Technique | Cold Drawn, Cold Rolled | Surface Treatment | Polishing |
| Standard Length | 1000mm - 8000mm | Surface Roughness | Ra0.2-0.4 |
| Material | Chrome | Yield Strength | Not Less Than 520 N/MM2 |
| Brand Name | chunfa | Model Number | 12000DS-A |
| Place of Origin | china | ||
| High Light | CK45 chrome plated piston rod ，30-50μm chrome layer piston rod ，7500mm chrome piston rod | ||
Chrome Piston Rod
Heavy Duty CK45 Hard Chrome Plated Rods | 7.5 Meters Extra-Long Precision Shafts (30-50μm Chrome Coating)
| Technical Item | Specifications & Standards |
| Material | CK45, 4140, 42CrMo4, ST52, Stainless Steel |
| Diameter Range | 16mm — 250 mm |
| Diameter Tolerance | ISO f7 |
| Surface Hardness | HRC 55 - 63 (Induction Hardened) |
| Chrome Layer Thickness | 20μm — 50μm+ (Customizable upon request) |
| Salt Spray Test | NSS 96 Hours (Up to 500H for specialized conditions) |
| Surface Roughness | Ra 0.2 - 0.4 μm (Mirror Polished) |
| Straightness | 0.2mm / M |
| Standard Length | 1,000 mm — 7500 mm |
Hardened Surface
Utilizing professional induction heat treatment, the surface hardness is stabilized at HRC 55-63. This provides exceptional wear resistance in extreme friction environments, significantly extending the full lifecycle of the hydraulic cylinder.
High Precision
Strictly compliant with f7 tolerance and Ra 0.2-0.4 roughness standards. This ensures a perfect fit with seals, minimizing frictional resistance and effectively preventing system leakage.
Superior Corrosion Resistance
The dense chrome layer formed by precision electroplating creates a durable antioxidant barrier against acidic mine water or marine salt spray, protecting the internal steel core.
Mining Machinery: Boom cylinders for large excavators, deep-well hydraulic supports, and mining harvesters.
Energy & Power: Offshore oilfield compensation systems, wind turbine hydraulic adjustments.
Construction Machinery: Crane hydraulic systems, pile drivers, and tunnel boring machine (TBM) components.
Automotive & Automation: High-performance engine piston components, precision transmissions for industrial robots.
V. International Export Packaging
Individual Protection: Each piston rod is equipped with an independent protective sleeve to prevent surface scratching during transit.
Dual-Layer Anti-Rust: Surfaces are coated with specialized anti-rust oil and hermetically sealed with vacuum-grade moisture-proof film.
Heavy-Duty Shipping: Packed in reinforced export-grade fumigated wooden cases with internal anti-shock supports to ensure "Zero Damage" during transoceanic shipping.
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Company Details
Business Type:
Manufacturer,Seller
Year Established:
2003
Total Annual:
1-2500000
Employee Number:
40~50
Ecer Certification：
Verified Supplier
Wuxi Chunfa Hydraulic Machinery Co., Ltd. Overview Founded in 2003, Wuxi Chunfa Hydraulic Machinery Co., Ltd. is a modern enterprise integrating production and sales. We specialize in the manufacture of honed tubes, hydraulic cylinders, hollow piston rods, precision slender shafts, and hydraul... Wuxi Chunfa Hydraulic Machinery Co., Ltd. Overview Founded in 2003, Wuxi Chunfa Hydraulic Machinery Co., Ltd. is a modern enterprise integrating production and sales. We specialize in the manufacture of honed tubes, hydraulic cylinders, hollow piston rods, precision slender shafts, and hydraul...
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