Your Professional Traction Device Supplier
Our goal is to become your reliable partner in the alloy wheel rims in China. Shandong Liangshan Shengxiang Machinery Parts Co., Ltd., is a leading enterprise nationwide in various types of trailers, port equipment, and other machinery. We are committed to applying advanced manufacturing technologies and strict quality control standards to every product. Our products are quality-assured, making us a dependable choice for long-term cooperation.
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![Semi-trailer Tractor Saddle]()
Semi-trailer Tractor SaddleOur heavy-duty semi-trailer tractor saddle is built to connect tractors and semi-trailers safely, reliably, and for long-haul daily use. It’s designed for fleets, logistics firms, and owner-operators
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![Trailer Cross-type Towing Pin]()
Trailer Cross-type Towing PinOur heavy-duty Trailer cross-type towing pin delivers stable, long-lasting connection for commercial and industrial trailers, built to handle daily stress, rough roads, and heavy loads without
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![90 Trailer Towing Seat]()
90 Trailer Towing SeatOur 90 trailer towing seat is a rugged, reliable connection part built for heavy-duty semi-trailers and trucks. It’s designed to handle constant heavy loads, rough roads, and long-haul use while
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![50 Trailer Towing Seat]()
50 Trailer Towing SeatOur heavy-duty 50 trailer towing seat is built for real-world trucking, giving you a strong, steady connection between your tractor and semi-trailer you can rely on mile after mile. It’s designed to
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![Trailer Coupling Saddle]()
Trailer Coupling SaddleOur heavy-duty trailer coupling saddle provides a strong, stable connection between tractor and semi-trailer for safe long-haul and on-site transport. Built for real-world use, it handles heavy loads
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![Longitudinal Oscillating Fifth Wheel]()
Longitudinal Oscillating Fifth WheelOur heavy-duty Longitudinal oscillating fifth wheel is built for tough semi-trailer and tractor operations, delivering stable front-to-rear oscillation, strong load capacity, and long service life
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![Semi-trailer Kingpin]()
Semi-trailer KingpinOur heavy-duty semi-trailer kingpin is built to connect tractors and semi-trailers safely, reliably, and for the long haul. It’s made for real-world use in logistics, construction, and long-distance
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![Trailer No. 90 Towing Pin]()
Trailer No. 90 Towing PinOur Trailer No. 90 towing pin is a heavy-duty connection part built for semi-trailers and commercial hauling, delivering stable, long-lasting performance in daily transport. It’s made to match
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![Trailer No. 50 Towing Pin]()
Trailer No. 50 Towing PinOur heavy-duty Trailer No. 50 towing pin is built for reliable, long-lasting performance in commercial and industrial towing. It’s designed to connect trailers and tractors safely, handle heavy
Why Choose Us
Production Equipment
Our company is equipped with advanced production equipment, including CNC lathes, milling machines, fully automatic welding machines, hydraulic system assembly tables, and specialized equipment for axle and suspension processing. This enables us to precisely meet the processing and assembly needs of products such as support devices and hydraulic outriggers.
Quality Control
Our quality control system is equipped with tensile testing machines, hardness testers, and load-bearing testing benches, allowing for full-process inspection of raw materials, semi-finished products, and finished products. All equipment has undergone extensive real-world testing to ensure stable and reliable operation. This system efficiently supports mass production and customized processing, guaranteeing product quality meets actual operating conditions.
Customized Solutions
We can provide customized solutions based on customers' vehicle models and load-bearing requirements to meet their individual needs.
Our Services
We have established a rapid response mechanism, providing warranty repair and parts replenishment services to promptly resolve any usage issues.
The traction device produced by our company mainly include the following types:
Semi-trailer Tractor Saddle
Our heavy-duty semi-trailer tractor saddle is built to connect tractors and semi-trailers safely, reliably, and for long-haul daily use. It’s designed for fleets, logistics firms, and owner-operators who want consistent performance, less downtime, and strong stability on all road conditions.
Trailer Cross-type Towing Pin
Our heavy-duty trailer cross-type towing pin delivers stable, long-lasting connection for commercial and industrial trailers, built to handle daily stress, rough roads, and heavy loads without failure.
Semi-trailer Tractor Saddle
Semi-trailer tractor saddle have many advantages, including: Made from high-strength cast steel for heavy loads and long service life. Secure, fast locking mechanism to prevent accidental release
Good wear resistance with built-in lubrication grooves. Fits standard 2" (50#) and 3.5" (90#) kingpins for wide compatibility. Stable articulation for rough roads and long-distance transport. Easy to install, maintain, and replace.
Trailer Cross-type Towing Pin
Trailer cross-type towing pin have many advantages, including:
Strong & durable: Forged alloy steel core resists cracking, bending, and fatigue even under heavy loads.
Stable connection: Cross-type design locks securely to reduce wobble and improve towing safety.
Corrosion resistant: Zinc or black oxide finish stands up to rain, snow, dirt, and road salt.
Easy fit: Compatible with most standard semi-trailers and tractors for fast installation.
Long service life: Minimal wear, low maintenance, and fewer replacements over time.
Application of Traction Device
Semi-trailer Tractor Saddle
Semi-trailer tractor saddle can be used for a variety of purposes, including: The saddle supports the front end of the semi-trailer, safely transferring thousands of pounds of payload directly onto the tractor's drive axles for better traction and vehicle stability. By allowing the trailer's kingpin to lock into its center, the saddle acts as a massive swivel. This enables the tractor-trailer unit to smoothly turn corners and navigate curves that would be impossible with a rigid single-frame truck.
Trailer Cross-type Towing Pin
Trailer cross-type towing pin can be used for a variety of purposes, including: A trailer cross-type towing pin (or cross pin) is a heavy-duty connecting hardware used in agricultural, commercial, and off-road towing. It passes horizontally through a "jaw and pin" or "pintle-style" hitch to securely lock a trailer’s lunette ring or drawbar eye in place, preventing detachment during transport.
Specification of Semi-trailer Tractor Saddle
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Item |
Value |
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Model |
FW-50 / FW-90 |
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Kingpin Size |
50mm / 90mm |
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Mounting Height |
185mm / 200mm |
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Vertical Load |
25,000kg |
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Total Rated Load |
60–100 tons |
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Material |
High-strength cast steel |
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Surface |
Powder coating |
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Certification |
ISO, CE |
Specification of Trailer Cross-type Towing Pin
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Item |
Value |
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Material |
Forged alloy steel |
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Surface |
Zinc-plated / black oxide |
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Size |
50 mm / 90 mm |
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Standard |
ISO 337, ISO 4086 |
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Load Capacity |
30–80 tons |
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Installation |
Weld / bolt-on |
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Working Temp |
-40°C to 120°C |
Customizable options of Wheel
Construction & materials: Choose between cast, forged, or even carbon fiber for weight
Other Service of Traction Device
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Package |
Wooden box |
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Shipping |
Sea/Express |
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Payment |
We accept T/T and L/C. For samples or small trial orders |
As one of the leading traction device manufacturers and suppliers in China, we warmly welcome you to buy discount traction device made in China here and get pricelist from our factory. For price consultation, contact us.
