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Custom Gas Spring Accessories Supplier

OEM/ODM Solid Strut Rod Solutions | Precision Hydraulic Piston Rods for Automotive, Industrial & Furniture Applications

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2012
Founded In
5000㎡
Factory Area
60+
Employees
50M
Annual Output

About Hengzhixin

Changzhou Hengzhixin Machinery Co., Ltd. is a leading manufacturer and exporter of high-precision piston rods, gas spring accessories, and mechanical components. Founded in 2012, we specialize in R&D, manufacturing, and sales of solid piston rods, hollow piston rods, motor bearings, and custom hydraulic solutions.

Equipped with advanced automatic production lines, a QPQ salt bath nitrocarburizing heat treatment line, and a computerized detection system, we maintain strict quality control throughout every stage of production. Our products are exported to Europe, the Middle East, and other global markets, trusted for their durability and precision.

  • ISO f7 Tolerance & Ra ≤0.2μm Surface Finish
  • Chrome Thickness: 20–30μm Minimum
  • OEM & ODM Customization Available
  • 40 Million+ Rods Produced Annually
Factory Interior

Our Products

High-precision solid and hollow piston rods, motor bearings, and gas spring accessories engineered for reliability, durability, and performance across automotive, industrial, and furniture sectors.

Custom 45 Steel Piston Rod

Custom 45 Steel Piston Rod

For automobile supporting gas spring | Φ26~30mm

  • Material: CK45 carbon steel (SAE1045, S45C)
  • Diameter: Ø6–30mm (customizable)
  • Hardness: HRC40–45
  • Surface: QPQ salt bath nitrocarburizing
HRC40-45 Chrome Piston Rod

HRC40-45 Chrome Piston Rod

Ø8mm × 700mm | High Precision

  • Max Length: 700mm (custom)
  • Roughness: Ra ≤0.2μm
  • Chrome Thickness: 20–30μm
  • Straightness: ≤0.2mm/m
Steel 35 Hydraulic Chrome Rod

Steel 35 Hydraulic Chrome Rod

For damper | Diameter Φ6–30mm

  • Material: CK35 / C45
  • Strength: High Strength
  • Surface: QPQ treated
  • Origin: China | OEM/ODM
CK45 Hydraulic Piston Rod

CK45 Hydraulic Piston Rod

Medium carbon steel for high-pressure use

  • Tensile Strength: ≥610 MPa
  • Yield Strength: ≥355 MPa
  • Elongation: ≥15%
  • Application: Hydraulic cylinders
Chrome Plated Piston Rod

Chrome Plated Piston Rod

For office chair gas spring

  • Use: Furniture & industrial applications
  • Size Range: Φ6–16mm
  • Performance: Smooth operation
  • Reliability: Long service life
Hot Sale QPQ Piston Rod

Hot Sale QPQ Piston Rod

For wooden case & hardware toolbox

  • Precision: High accuracy
  • Surface: Corrosion-resistant
  • Custom: Diameter & length options
  • Finish: Mirror-like chrome
Hollow Piston Rod

Hollow Piston Rod

Lightweight & high-strength design

  • Material: CK45, CK35
  • Diameter: Customizable
  • Applications: Pneumatic systems
  • Advantage: Reduced weight
Motor Bearing

Motor Bearing

High-speed rotation support

  • Type: Precision ball bearing
  • Load Capacity: High radial & axial
  • Sealing: Dust & moisture resistant
  • Use: Motors, gearboxes
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Why Choose HZX?

Advanced technology, strict quality control, and global delivery ensure you get the best components for your applications.

Quality First

Strict quality inspection team and complete management system ensure every product meets international standards.

Advanced Equipment

QPQ salt bath nitrocarburizing line and computer detection systems ensure precision and consistency.

Global Reach

Products exported to Europe, Middle East, and other regions with reliable logistics and after-sales support.

Frequently Asked Questions

What materials do you use for piston rods?

We primarily use CK45 (SAE1045, S45C) and CK35 carbon steels, known for their high strength and durability in hydraulic and pneumatic applications.

Can you customize rod dimensions?

Yes, we offer full customization for diameter (Φ6–30mm), length (up to 700mm or more), and surface treatment to meet your exact specifications.

What is QPQ surface treatment?

QPQ (Quench-Polish-Quench) is a salt bath nitrocarburizing process that enhances corrosion resistance, wear resistance, and fatigue strength of metal components.

Do you support OEM/ODM orders?

Yes, we are a professional OEM/ODM manufacturer and can produce under your brand with custom packaging and technical support.

What industries do your products serve?

Our components are used in automotive (trunk lifts, dampers), furniture (office chairs), industrial machinery, solar water heaters, and hardware toolboxes.

Get in Touch

For quotes, technical inquiries, or partnership opportunities, visit our official website to contact the Hengzhixin team directly.

Visit Official Website

Email: info@hzxhardware.com

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