Detailed Product Description

1.Material: CK45, ST52, 20MnV6, 42CrMo4, 40Cr
2.Ground and chrome plated
3.Diameter:6~1000mm
4.length:1000mm-11000mm

Detailed Description

1.CHEMICAL COMPOSITION

2.MECHANCIAL PROPERTIES

3. SUPPLY CONDITION

Ground and chrome plated

4. CHROME THICKNESS: 20 to 30 micron

5. SURFACE ROUGHNESS:Ra≤0.2 micron

6. TOLERANCES ON DIA ISO f7 on the diameter

7 PACKING :Anti rust oil to be applied on material and each rod to be packed in paper sleeve

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 hydraulic piston rods for a wide range of industrial applications.

Main Products

1. Honed Cylinder Tubes & Cylinder Blocks

• Specifications: inner diameter Φ32–700 mm, wall thickness 2–50 mm, length ≤ 13,000 mm

• Processes: cold drawing, honing, and precision machining

• Applications: hydraulic cylinders, pneumatic cylinders, petrochemical pumps, coal mine support, construction machinery, heavy transport machinery, automotive drive shafts, plastic machinery, and more

2. Precision Slender Shafts & Piston Rods

• Specifications: outer diameter Φ6–500 mm, length ≤ 12,000 mm

• Types: hydraulic piston rods, pneumatic piston rods, guide rods, guide posts, guide shafts

• Applications: textile machinery, mining equipment, automotive components, shock absorbers, printing and dyeing equipment, printing machines, die-casting machines, injection molding machines, four-column hydraulic presses, office equipment, and other industries

Recent Performance & Markets

In recent years, our products have been well recognized for both high product quality and reliable after-sales service. Selected products are exported to Europe, the United States, and Southeast Asia.

Corporate Philosophy & Management

We uphold the principles of Integrity, Innovation, Precision, and Service, with the motto “Integrity First, Customer Supreme.”

• A rigorous management system

• Advanced production equipment

• Complete testing instruments

These ensure reliable product quality and stable customer satisfaction.

Location & Scale

• Location: Yangshan Town, Wuxi, on the scenic shore of Taihu Lake

• Transportation: ~30 minutes to Wuxi Airport and Wuxi Railway Station

• Factory Size: 7,000 m²

• Employees: 30+ skilled staff

Core Advantages

1. Full Industrial Chain Integration

• Integration of R&D, production, and sales

• End-to-end self-controlled process, from raw materials to delivery

• In-house optimized cold drawing and high-precision polishing processes

2. Advanced Manufacturing Technology

• Three-stage process: cold drawing → precision grinding → high-precision polishing

• Surface roughness Ra ≤ 0.2 μm, meeting ISO standards

• Enhanced wear resistance and corrosion resistance

• Service life extended by ~30% compared with conventional products

3. Customization & Fast Response

• Requirement analysis tailored to customer applications

• Rapid prototyping and small-batch trial production

• Full-process customized services to meet diverse needs

Product Highlights

High-Precision Piston Rod Series

• Materials: 45# steel, 42CrMo, 35CrMo, bearing steel, stainless steel, 40Cr alloy steel

• Heat Treatment: HRC 28–32; tensile strength ≥ 850 MPa

Surface Treatments:

• Chrome Plating: thickness 0.03–0.05 mm, hardness HV 850–1100; corrosion resistance proven by 720-hour salt spray test with no rust

• Roller Burnishing: surface hardness +50%, fatigue life up to 3× longer

Applications:

• Excavator booms, crane telescopic arms, and other high-load conditions

• Achieves precision control within ±0.05 mm

Commitment

Wuxi Chunfa is committed to being a long-term and reliable partner in the hydraulic industry—providing world-class piston rods, honed tubes, and precision shafts with:

• Consistent quality

• On-time delivery

• Professional service