EAST AI Hydraulic Manufacturer
Since 2006
 |
EAST AI
40Cr
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 40Cr Chrome Plated Rod Normalized (HRC 15–22) offers several advantages that make it stand out in the market:
Normalized to HRC 15–22, ensuring both strength and controlled toughness.
Hard chrome plating provides a smooth surface with long service life.
The chrome layer resists rust and oxidation, suitable for outdoor or humid environments.
Precision straightening ensures minimum deflection, ideal for hydraulic cylinders.
Tightly controlled tolerances allow easy assembly and compatibility with seals.
Normalized structure improves fatigue resistance under dynamic loads.
For distributors and stockists, these advantages mean fewer customer complaints, longer equipment lifespan, and a stronger competitive edge in the hydraulic components market.
The manufacturing of 40Cr Chrome Plated Rod Normalized (HRC 15–22) follows a strict process to ensure consistent quality:
Raw Material Selection
Premium 40Cr steel is sourced to guarantee mechanical strength.
Cutting and Rough Machining
Bars are cut to length and prepared for processing.
Heat Treatment (Normalization)
Rods are normalized to achieve hardness HRC 15–22, improving toughness and machinability.
Peeling or Grinding
Surface machining removes defects and prepares for chrome plating.
Polishing
Precision polishing creates a smooth base surface.
Hard Chrome Plating
A uniform chrome layer (20–30 microns) is applied for wear and corrosion resistance.
Final Grinding & Polishing
Achieves mirror finish with Ra ≤ 0.2 μm.
Straightening & Quality Check
Ensures straightness ≤ 0.2mm/m and dimensional accuracy.
Packing & Shipping
Protected with oil film, paper, or plastic to prevent damage during transport.
This controlled process guarantees consistency, making it easier for distributors and contractors to maintain inventory quality.
The 40Cr Chrome Plated Rod Normalized (HRC 15–22) is widely used in industries requiring strong, wear-resistant, and corrosion-resistant rods:
Piston rods for construction machinery, agricultural equipment, and industrial hydraulics.
Shock absorbers, steering systems, and lifting mechanisms.
Reliable under extreme working conditions.
Presses, cranes, excavators, and loaders.
Corrosion resistance makes it suitable for port and offshore machinery.
For stockists and resellers, this wide application range means strong and consistent demand across multiple industries.
Here are the key specifications of 40Cr Chrome Plated Rod Normalized (HRC 15–22):
| Parameter | Specification |
|---|---|
| Material | 40Cr Steel |
| Surface Treatment | Hard Chrome Plating |
| Hardness | HRC 15–22 (Normalized) |
| Surface Roughness | Ra ≤ 0.2 μm |
| Chrome Layer Thickness | 20–30 μm (customizable) |
| Straightness | ≤ 0.2 mm/m |
| Diameter Tolerance | f7, g6, h8 or as required |
| Length | Up to 6 meters (custom lengths available) |
| Corrosion Resistance | Salt spray tested for 96–120 hours |
| Applications | Hydraulic cylinders, machinery, automotive |
Our factory maintains a large inventory of 40Cr Chrome Plated Rod Normalized (HRC 15–22) to meet urgent requirements from distributors and engineering projects.
Common diameters from Ø20mm to Ø200mm are always available.
Immediate dispatch reduces waiting time for urgent projects.
Special diameters, lengths, or tolerance levels available on request.
Seaworthy packing with rust protection for long-distance shipping.
This stock capacity ensures that stockists and resellers can replenish supply quickly and avoid project delays.
To guarantee consistent performance, every 40Cr Chrome Plated Rod Normalized (HRC 15–22) undergoes strict testing:
Confirms steel composition.
Ensures HRC 15–22 after normalization.
Ra ≤ 0.2 μm guaranteed.
Laser and mechanical inspection.
Validates corrosion resistance of chrome plating.
Detects internal defects.
Distributors and engineering buyers can rely on consistent quality across every batch.
Our 40Cr Chrome Plated Rod Normalized (HRC 15–22) is certified to meet international quality and safety standards:
Quality Management System
recognized by marine and engineering industries
(SGS, BV available on request)
These certificates provide distributors and contractors with confidence in compliance and reliability.
