EAST AI Hydraulic Manufacturer
Since 2006
 |
Q + T
EAST AI
ST52
Max. 15m
f7/f8/g6,etc
≤0.2/1000 mm
Hydraulic cylinders for mobile equipment, industrial machinery, and heavy-duty systems
Anti rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case,can be customised according to customer requirements
≤0.2u
Product Description
The quenching and tempering process ensures an ideal balance of hardness, strength, and toughness.
The chrome-plated finish provides strong protection against rust and pitting in harsh environments.
The hardened surface extends service life by minimizing abrasion.
Tight dimensional tolerances guarantee stable performance in hydraulic systems.
Capable of handling repetitive loading and high-pressure environments.
Suitable for various industries including construction machinery, agricultural equipment, and lifting systems.
The manufacturing process follows rigorous standards to guarantee consistency and quality:
| Step | Description |
|---|---|
| Raw Material Selection | High-purity ST52 steel with excellent mechanical properties is chosen. |
| Quenching & Tempering | Rods are heat-treated to achieve controlled hardness of HRC 25–32. |
| Peeling & Grinding | Surface defects are removed, and dimensional accuracy is ensured. |
| Polishing | Precision polishing prepares the surface for optimal chrome adhesion. |
| Hard Chrome Plating | A uniform chrome coating improves wear and corrosion resistance. |
| Final Inspection | Surface roughness, hardness, and straightness are tested before delivery. |
The ST52 Chrome Plated Rod Quenched And Tempered is widely used in industries requiring reliable piston rods and shafts:
Main piston rods for construction machinery, agricultural equipment, and industrial hydraulics.
Cranes, elevators, and hoists benefit from enhanced load-bearing strength.
Bulldozers, excavators, and loaders rely on toughened piston rods.
Chrome layer protects against saltwater corrosion.
Hydraulic presses and production equipment require precision rods.
High resistance against abrasive environments.
The ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32) is manufactured with precision to deliver reliable hardness, toughness, and corrosion resistance. Below are the detailed specifications:
| Parameter | Specification |
|---|---|
| Material Grade | ST52 (DIN 2391 / EN 10305) |
| Heat Treatment | Quenched and Tempered |
| Hardness Range | HRC 25 – 32 |
| Surface Treatment | Hard Chrome Plating |
| Chrome Layer Thickness | 20 – 30 μm (customizable upon request) |
| Surface Roughness (Ra) | ≤ 0.2 μm |
| Straightness Tolerance | ≤ 0.2 mm / 1000 mm |
| Outer Diameter Range | 8 mm – 350 mm |
| Length Range | Up to 8 meters (custom cut available) |
| Tensile Strength | 600 – 850 MPa (depending on dimensions) |
| Yield Strength | ≥ 355 MPa |
| Applications | Hydraulic cylinders, construction machinery, lifting equipment, agricultural use |
| Standards | DIN 2391, EN 10305, ISO 9001, GL Approval |
To meet urgent distributor and engineering demands, our factory maintains:
Standard diameters always in warehouse.
Cut-to-size service for immediate shipping.
Stock rods for quick dispatch within 3–7 days.
Over 2,000 tons of monthly production output.
This guarantees that stockists and project managers never face downtime due to material shortages.
Every ST52 Chrome Plated Rod Quenched And Tempered undergoes strict testing before shipment:
Ensures HRC 25–32 hardness is achieved consistently.
Evaluates corrosion resistance of chrome plating.
Confirms Ra ≤ 0.2 μm for smooth hydraulic sealing.
Prevents cylinder wear due to rod bending.
Detects internal and surface defects.
Ensures compliance with ISO and DIN standards.
Our ST52 Chrome Plated Rod Quenched And Tempered is backed by international certifications, including:
Quality management system compliance.
Environmental management certification.
Independent third-party inspections.
Traceability and chemical composition validation.
For marine and offshore industries.
These certifications give distributors and engineers confidence in long-term reliability.
FAQ
