Heavy Leading Company Limited is one of the most reliable manufacturers and suppliers of extendable container chassis semi trailer in China. If you're going to wholesale bulk durable extendable container chassis semi trailer made in China, welcome to get quotation from our factory. All customized products are with high quality and low price.
Heavy-Duty Lightweight 40ft/45ft Gooseneck Container Chassis Semi Trailer
Technical Overview & Configuration Matrix
This extensible gooseneck container chassis utilizes a high-tensile structural box-in-box slide mechanism to transition between operational lengths. Designed for integration with Class 8 day cabs and sleeper tractors, structural integrity and performance parameters comply with FMVSS, DOT, ISO 1496, and AAR interchange standards.
|
Model Series |
Nominal Length (Retr. / Ext.) |
Estimated Tare Weight |
Gross Vehicle Weight Rating (GVWR) |
Main Beam Material |
Axle & Suspension Setup |
|
ECC-4020L |
31 ft 2 in / 40 ft 9 in |
3,175 kg (7,000 lbs) |
35,000 kg (77,160 lbs) |
ASTM A572 Grade 50 / Q460C |
Tandem Axle (Hutch / Hendrickson) |
|
ECC-4520G |
31 ft 3 in / 45 ft 6 in |
4,535 kg (10,000 lbs) |
40,800 kg (90,000 lbs) |
Strenx 700 / High-Tensile I-Beam |
Sliding Tandem or Tridem Air-Ride |
Core Engineering & Structural Specifications
Main Frame & Telescoping Mechanism
Material Composition: Flanges and structural webs fabricated from ASTM A572 Grade 50 and Q460C high-yield structural steel (yield strength >= 345 MPa to 460 MPa), engineered to absorb high torsional fatigue during tight terminal turns.
Extension Slide System: Precision box-in-box structural slide rails equipped with low-friction engineering polymer glide pads. This setup prevents metal-to-metal galling and eliminates structural binding in high-salinity marine environments.
Locking Mechanism: Pneumatic-assisted mechanical lock pins featuring positive-engagement drop pins that lock securely into precision-machined load slots.
Running Gear & Braking System
Axles: 13-ton / 15-ton commercial parallel-spindle axles (Fuwa, BPW, or Meritor).
Suspension: Underslung 3-leaf mechanical spring suspension or Hendrickson INTRAAX integrated air-ride suspension with automatic ride-height control valves.
Braking Architecture: Dual-line pneumatic system integrated with WABCO or Haldex ABS (2S/1M), T30/30 spring brake chambers, and automatic slack adjusters.
Twist Locks & Securement Points
Four (4) heavy-duty cast steel ISO retractable twist locks positionable for single 20ft center loading, rear 20ft loading, or dual 20ft / single 40ft/45ft container configurations.
Heavy-duty structural steel front bolster fitted with outboard guide rollers for rapid, safe container alignment during high-cycle yard operations.
Manufacturing & Quality Control Protocol
Chassis structural lifespan relies entirely on tightly controlled fabrication standards. Production processes incorporate mandatory quality checkpoints:
Plate Cutting & Prep: CNC plasma profile cutting combined with automated edge beveling to guarantee complete root penetration during primary flange welding.
Welding Standards: Submerged Arc Welding (SAW) utilized for primary longitudinal I-beams performed by technicians certified under AWS D1.1 / EN ISO 15614 codes.
Non-Destructive Testing (NDT): 100% Magnetic Particle Inspection (MPI) applied to gooseneck junctions, fifth-wheel friction plates, and extension locking pocket zones.
Surface Coating: Complete abrasive blast cleaning to Sa 2.5 standard, followed immediately by a two-component zinc-rich epoxy primer (minimum 75-micron dry film thickness) and an aliphatic polyurethane topcoat.
Application Suitability & Operational Warning
Target Operating Environments: Paved maritime container ports, intermodal rail container transfer yards, and regional highway distribution corridors.
Payload Compliance Warning: Fleet operators must calculate adjusted kingpin settings and axle weight distribution to ensure compliance with local bridge weight laws (e.g., Federal Bridge Gross Weight Formula) when hauling heavy 20ft laden containers in the rear position.
FAQ
Q: How does the sliding frame mechanism lock into position between 20ft and 40ft lengths?
A: The inner frame section telescopes inside the outer main beam, guided by low-wear industrial polymer pads. Positive mechanical locking is achieved using heavy-duty spring-loaded pneumatic lock pins that drop into machined tolerance slots, backed by a visual mechanical confirmation indicator near the landing gear.
Q: What is the standard fifth wheel height and kingpin offset?
A: The standard fifth wheel height is set at 48 inches (+/- 1 inch). The standard kingpin location is 30 inches from the front face of the front bolster, matching standard SAE 2-inch configuration requirements. Custom kingpin settings can be engineered upon drawing sign-off.
Q: Can this chassis handle heavy 20ft loaded tank containers (ISO-tanks)?
A: Yes, provided the total payload and container tare do not exceed the structural GVWR rating. For dedicated liquid transport, we recommend specifying our reinforced center-mounting twist lock layout and air suspension with manual dump valves to control fluid surge.
Q: What compliance documentation is issued with each trailer delivery?
A: Every unit ships with a structured Quality Dossier including: raw material mill test certificates, weld inspection reports, brake system schematic sheets, coating thickness logs, and the formal Certificate of Conformance (CoC).
Request an Engineering Quote
Provide your operational parameters below to receive a formal quotation configured to your regional axle regulations:
- Target Fleet Quantity:
- Destination Port / Delivery Location:
- Preferred Axle & Suspension Brand:
- Regulatory Standard Required (e.g., DOT, FMVSS, ADR):
[Submit RFQ / Connect with an Applications Engineer]
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