Features of Hollow Piston Rod

Advanced QPQ Surface Treatment

Hollow steel rod enhances surface hardness (≥950 HV) and wear resistance through Quench-Polish-Quench (QPQ) technology.

Superior corrosion resistance for harsh environments.

Optimized Hollow Design

Reduces weight while maintaining structural integrity, ideal for high-speed or heavy-load applications.

Precision-engineered grooves and ends for seamless integration with damper systems.

Premium Material Performance

45#/35# Steel: Hollow steel rod with high tensile strength, excellent machinability, and fatigue resistance.

Chemical composition compliance: Low sulfur (S ≤0.035%) and phosphorus (P ≤0.035%) for enhanced durability.

Hollow piston rod Manufacturing Main Process Description:

1. Steel Raw Material Cutting,Steel 45# or Steel 35#

2.CNC machining (including thread end machining and boring machining)

3. Wire rolling

4. Grinding

5. Cleanning

6.Chrome plating/QPQ

6. 100% Inspection

7. Craft Boxes and Wooden Case Packaging

Application：

Hollow piston rod with steel 45/35 is widely used in machinery, without heat treatment: HB≤229; Heat treatment: normalizing; Impact power: Aku≥39J; High strength, plasticity and toughness is still good, 45# steel quenched before no tempering, hardness greater than HRC55 (up to HRC62) is qualified, after heat treatment, and then tempering can reach HRC42-46, so that it can ensure its good mechanical properties, but also get the surface hardness requirements, Hollow steel rod is used to make small section tempering parts with large load and large normalizing parts with small stress, as well as surface quenched parts with low core strength requirements, such as pins, guide posts, watch hands and other parts.

These hollow piston rods offers a more cost-effective and lightweight solution compared to solid rods, without compromising on strength and functionality.Hengzhixin offers customization options for hollow piston rods, allowing clients to specify dimensions, materials, and finishes to match their unique project needs. This level of customization, combined with the company's expertise in metal fabrication, ensures that each hollow rod is optimized for its intended application, whether it's a hollow piston rod for a specialized mechanical assembly or a hollow steel rod for an architectural project.

The manufacturing process at Hengzhixin involves advanced production lines and stringent quality control measures. The company has achieved ISO9001 quality management system certification, ensuring that their hollow steel rods meet international standards. With an annual output of over 40 million pieces hollow piston rods, Hengzhixin's hollow steel rods are not only popular in domestic markets but also exported in large quantities to Europe, the Middle East, and other regions