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Vehicles & two-wheelers
2 Inch / 3.5 Inch, Bolted & Welded Kingpin for Heavy-duty Trailer
<p style="line-height: 2em;">This semi-trailer king pin is the core coupling component to connect tractor head and semi-trailer. We supply two standard mainstream sizes: <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-size-adjust: none; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-…
SupplierShijiazhuang Trust Vehicle Industry Co., Ltd.www.cntrustvehicle.com
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About this product
Product information from the supplier.
| Item | Specification Details |
|---|---|
| Standard Sizes | 2 Inch (50#) / 3.5 Inch (90#) |
| Material | High Strength 40Cr Alloy Steel |
| Manufacturing Process | Hot Forging + CNC Precision Machining + Overall Heat Treatment |
| Two Mounting Types | 1. Bolted Detachable Assembly Type2. One-piece Welded Forged Type |
| Surface Treatment | Bolted type: Grinding & Galvanized Anti-rustWelded type: Black Anti-corrosion Spray Painting |
| Applicable Trailer | 2 Inch: Container, Cargo Box, Light & Medium Standard Semi-Trailer3.5 Inch: Dump Tipper, Mining, Overload Engineering Heavy Trailer |
| Standard Compliance | ISO 337, GB/T 4606, IATF16949 Automotive Quality Standard |
| Traction Plate Thickness | Optional 8mm / 10mm / 12mm / 16mm |
Core General Advantages
Two universal industry sizes cover all light, medium and heavy-load trailer matching demands, high market compatibility
Premium alloy steel with quenching treatment, high hardness, strong anti-impact and anti-deformation capacity under extreme load
Dual structural design (bolted / welded) to meet different maintenance and working condition requirements
Precise CNC machining ensures perfect fit with fifth wheel coupling, smooth rotation, no jitter during vehicle turning
Strict factory load & wear testing, stable performance for long-distance transportation and rough road operation
Complete surface anti-rust process, effectively resist mud, rain and dust erosion in complex working environments
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Shijiazhuang Trust Vehicle Industry Co., Ltd.
