



Diameter Range: Ø6-30mm
Maximum Length: 1000mm
Material: High-strength steel (C45,C35,304/316/316L stainless steel)
Surface Treatment: QPQ (Quench-Polish-Quench)
Surface Hardness: HRC 40-45
Surface Roughness: Ra ≤ 0.2μm
Salt Spray Test: 120+ hours
Application: car trunk and honnet, gas spring, damper, hardware toolbox
| Type | Model | Material | Diameter(mm) | Length(mm) | Roughness | Hardness | Surface Treatment |
| hard chrome rod | HZ021 | steel 45 | Φ10 | 212.5 | Ra<0.2μm | HRC40-45 | QPQ 96Hours |
45# steel hard chrome rods are precision-engineered components specifically designed for shock absorber applications. These rods combine the superior mechanical properties of 45# steel with advanced hard chrome plating technology.
Our production process ensures consistent quality and precision:
Material Selection: High-quality 45# steel from reputable suppliers
Precision Machining: CNC turning and grinding to achieve tight tolerances
Heat Treatment: Controlled quenching, tempering, or induction hardening
Surface Grinding: Precision grinding to achieve Ra ≤ 0.2μm surface roughness
Hard Chrome Plating: Electroplating process with thickness control
Superfinishing: Final polishing to achieve mirror-like surface
Quality Inspection: 100% dimensional and surface quality inspection
Packaging: Anti-rust oil application and protective packaging
We maintain rigorous quality control standards throughout the manufacturing process:
ISO 9001:2008 Certification: Certified quality management system
Material Certification: Full traceability of material composition and heat treatment
Dimensional Inspection: 100% dimensional verification using precision measuring instruments
Surface Quality: Visual inspection and roughness measurement
Hardness Testing: Vickers and Rockwell hardness testing
Salt Spray Test: 72-120 hours salt spray test according to ASTM B117
Cohesion Test: Thermal shock test at 300°C followed by water cooling
Rich Experience: Years of manufacturing expertise in precision piston rods
Complete Product Range: Comprehensive size range and material options
Stable Production: ISO 9001 certified manufacturing process with traceability
Quality Control: In-house laboratory with metallographic microscope, hardness tester, and other testing equipment
Technical Support: Experienced engineering team for technical consultation and support
Competitive Pricing: Cost-effective solutions without compromising quality
Global Delivery: Efficient logistics and export services worldwide

Qianhuang Town,Wujin District,Changzhou City,Jiangsu Province,China

0086-13584301543

info@hzxhardware.com
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