Your Professional Suspension Parts Manufacturer!
Founded in 2016, Shandong Jieyun Automobile Technology Co., Ltd. is a professional manufacturer specializing in the research, development, production, and sales of semi-trailer axles, suspension systems, and related components. Located in Liangshan, China’s well-known special vehicle industrial base, the company operates advanced production lines and a strict quality management system. Its products include American- and German-type axles as well as customized suspension solutions, widely used in wind power transportation, heavy equipment logistics, and container transport. With reliable product quality, strong technical support, and global service capabilities, the company exports to Europe, North America, the Middle East, and Southeast Asia.
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Axis Tie Rod PinThe axis tie rod pin is a critical load-bearing and connecting component in trailer steering and suspension systems, engineered to link the trailer axle, tie rod, and steering knuckle seamlessly.
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Square IronSquare irons are essential structural components designed for a wide range of trailer types, from light-duty multi-purpose trailers to heavy-duty freight and engineering trailers. Manufactured with
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Square Iron Fixing PinOur square iron fixing pin is a heavy-duty, precision-engineered component designed specifically for trailer applications, serving as a reliable fastener to secure trailer gates, ramps, and panels.
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Axis Center Support PinThe axis center support pin is a critical load-bearing fastener designed to secure, stabilize, and align rotating or stationary components in industrial machinery. Manufactured with high-strength
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Balance Beam Inner SleeveThe balance beam inner sleeve is a core structural component engineered to enhance the stability, durability, and performance of industrial balance beams across heavy-duty applications. Crafted with
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Lifting Iron Tension SpringThe lifting iron tension spring is a precision-engineered component designed to deliver reliable tensile force for industrial lifting equipment, machinery, and heavy-duty applications. Crafted from
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Lifting Iron Small Tension SpringOur lifting iron small tension spring is a high-performance component designed to deliver consistent elastic force and long-lasting reliability in lifting equipment, industrial machinery, and
Why Choose Us
Advanced Equipment
Our factory boasts a modern production line covering the entire process from material preparation, welding, machining to assembly and painting. We are equipped with advanced CNC machine tools, robotic welding workstations, and fully automated painting lines to ensure product precision and consistency.
ODM/OEM Service
We possess strong R&D and customization capabilities, enabling us to provide customized axle and suspension solutions based on the standards and requirements of different overseas markets. Our products serve multiple sectors, including trucks, trailers, and construction machinery.
High Quality
We strictly adhere to the IATF 16949 quality management system and have a professional testing center that comprehensively monitors raw materials, processes, and finished products to ensure the safety and reliability of our products.
Production Market
In terms of regional markets, our products have successfully entered several key global markets. In Europe, we focus on high-safety products that meet ECE standards; in North America, our trailer axles have obtained DOT certification; and we have also established stable sales networks in the Middle East and Southeast Asia.
Types of Suspension Parts
The Suspension Parts produced by our company mainly include the following types:
Axis Tie Rod Pin
The axis tie rod pin is a critical load-bearing and connecting component in trailer steering and suspension systems, engineered to link the trailer axle, tie rod, and steering knuckle seamlessly. Precision-machined from high-grade alloy materials, this trailer accessory ensures exceptional rigidity and wear resistance, effectively transmitting steering forces while maintaining stable axle alignment during long-haul transportation. Whether for light-duty utility trailers or heavy-duty cargo haulers, our axis tie rod pins deliver reliable performance to minimize steering slack and enhance overall trailer maneuverability.
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Parameter |
Specification |
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Material |
Heat-treated 40Cr alloy steel |
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Surface Treatment |
Hot-dip galvanizing |
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Diameter Range |
12mm–30mm |
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Length Range |
50mm–150mm |
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Thread Type |
Metric coarse thread (M12–M30) |
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Load Capacity |
Up to 8,000kg |
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Applicable Temperature |
-40°C to 120°C |
Advantages of Axis Tie Rod Pin

Superior Durability
Crafted with heat-treated alloy steel, the pin boasts high tensile strength and corrosion resistance, suitable for harsh working conditions like muddy roads, humid coastal areas, and extreme temperature variations.

Precision Fit
Advanced CNC machining guarantees tight dimensional tolerance, eliminating assembly gaps and reducing abnormal wear between components to extend the service life of the entire steering system.

Easy Installation
Designed with a standardized interface, the pin matches most mainstream trailer models on the market, requiring no additional modifications during installation, thus saving time and labor costs.

Cost-Effective
With a long service cycle and low maintenance requirements, it reduces the frequency of replacement and downtime for trailer operations, maximizing the cost performance for users.
Applications of Axis Tie Rod Pin
Cargo Trailers
For heavy-duty freight transportation vehicles to ensure stable steering during long-distance hauls.
Utility Trailers
Used in light-duty trailers for transporting equipment, furniture, and daily supplies.
Agricultural Trailers
Adapted to farm trailers carrying fertilizers, grains, and agricultural machinery, withstanding rough rural road conditions.
Construction Trailers
Suitable for construction site trailers transporting building materials such as steel bars, cement, and bricks.
Square Iron
Square irons are essential structural components designed for a wide range of trailer types, from light-duty multi-purpose trailers to heavy-duty freight and engineering trailers. Manufactured with precision and subjected to rigorous quality control, they provide exceptional load-bearing capacity and structural stability, ensuring optimal performance even under harsh operating conditions. These components serve as a reliable foundation for trailer frames, chassis reinforcement, and custom machining projects, meeting the demanding requirements of the transportation and logistics industry.
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Parameter |
Specification |
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Cross-sectional Dimension |
20×20mm–100×100mm (custom sizes available) |
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Wall Thickness |
1.2mm–5.0mm |
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Length |
3m, 6m, 12m (cut-to-order options) |
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Surface Treatment |
Hot-dip galvanized (≥85μm coating thickness) |
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Tensile Strength |
≥375MPa |
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Yield Strength |
≥235MPa |
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Tolerance |
±0.5mm (dimension), ±0.1mm (thickness) |

Exceptional Durability
The galvanized coating resists rust and corrosion for over 10 years in normal outdoor environments, eliminating frequent maintenance costs.
High Load Capacity
Precision cold-formed manufacturing ensures uniform wall thickness and structural integrity, supporting heavy payloads without deformation.
Versatile Compatibility
Available in multiple sizes and customizable lengths, it fits various trailer models and fabrication requirements.
Cost-Effective Solution
Premium material and craftsmanship extend service life, reducing replacement frequency and overall operational costs.
Easy Installation
Smooth surface finish and precise dimensional tolerance enable seamless welding, bolting, and integration into trailer structures.
Applications of Square Iron
Trailer & Chassis Manufacturing
Commonly used in trailer chassis frames, support structures, and reinforcement components to improve structural stability and load-bearing capacity.
Mechanical Suspension Systems
Applied in mechanical suspension assemblies and structural support systems requiring strong impact resistance and long-term durability.
Commercial Vehicle Structures
Suitable for heavy trucks, cargo transportation equipment, and utility vehicle structures requiring reliable mechanical strength under demanding operating conditions.
Construction & Industrial Equipment
Widely used in construction machinery, industrial platforms, and heavy-duty equipment fabrication for stable structural support and reinforcement.
Agricultural Equipment
Used in agricultural trailers and farming machinery requiring durable steel structures capable of operating in outdoor and rough terrain environments.
Metal Fabrication & Welding Projects
Ideal for general steel fabrication, welding structures, machinery frames, and customized industrial manufacturing applications.
Packaging and Shipping

FAQ
As one of the leading suspension parts manufacturers and suppliers in China, we also support customized service. Please feel free to buy high quality suspension parts made in China here from our factory. For pricelist, contact us now.
vehicle suspension components, trailer sales and parts, air suspension parts