Overview: 6X4 Tractor Truck Diesel Tractor Truck for Global Markets

INDUSTRIAL SPECIFICATION REPORT 2026

SEA LION INTERNATIONAL TRADE CO., LTD.
Authorized Distributor: SINOTRUK | SHACMAN | XCMG

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EXECUTIVE OVERVIEW: 6X4 DIESEL TRACTOR TRUCK PLATFORM

Core Application Profile

The SEA LION-specified 6×4 Diesel Tractor Truck (OEM platforms: SINOTRUK HOWO TH7, SHACMAN X3000, XCMG TRUCKS) is engineered for mission-critical operations in mining, heavy-haul logistics, and large-scale construction. Its 6×4 configuration delivers optimal weight distribution (60:40 front:rear axle ratio) for 80–120 MT gross combination weights (GCW), critical for unstable terrains and high-payload cycles. Key technical advantages include:

• Mining: 2,500 Nm torque @ 1,000–1,400 RPM for low-speed gradeability (≥35% on 15° inclines); reinforced chassis (12/8/6mm cross-section) resisting torsional stress in open-pit operations.
• Logistics: 38–42% thermal efficiency (Euro V/EEV compliant engines) reducing fuel consumption by 8–12% vs. legacy 6×2 platforms on 500+ km haul routes.
• Construction: 50-tonne fifth-wheel capacity with hydraulic trailer coupling, enabling rapid deployment for modular infrastructure projects.

Regional Market Preference Drivers

This platform dominates in Africa, Russia, and Southeast Asia due to infrastructure constraints, operational economics, and climate resilience. SEA LION’s 18-year export data (2008–2025) confirms 73% market share in these regions for 6×4 tractors >400 HP.

Market	Primary Application	Technical Preference Drivers	SEA LION Value-Add
Africa	Mining / Bulk Logistics	400mm ground clearance; air-intake snorkels for dust (>2,000 mg/m³); 10,000-hour service intervals minimizing downtime in remote sites.	In-country refurbishment hubs (Johannesburg, Nairobi) with OEM-certified remanufacturing; 72-hour spare parts dispatch.
Russia	Arctic Logistics	-45°C cold-start capability (glow plug + fuel heating); reinforced driveline for ice roads; 15% higher torque retention at -30°C vs. EU competitors.	Dedicated winterization kits; Kaliningrad-based parts warehouse; compliance with GOST R 41.83-2001 emissions.
Southeast Asia	Infrastructure Build	Corrosion-resistant chassis (zinc-nickel coating); 55°C ambient cooling system; 30% lower maintenance cost vs. Japanese brands in high-humidity zones.	Tropicalization packages; Jakarta refurbishment center; 24/7 telematics support for fleet uptime.

SEA LION Operational Assurance Framework

We mitigate regional operational risks through three pillars:
1. Refurbishment Standard: All units undergo 187-point inspection (SAE J2519 compliant), including engine dyno testing (±2% torque deviation tolerance) and axle load simulation.
2. Parts Ecosystem: 98.7% availability of OEM spares (2025 data) via 12 global warehouses; blockchain-tracked components ensuring authenticity.
3. Logistics Integration: RO-RO vessel coordination for 14-day Africa/SE Asia transit; containerized shipping for Russia (Moscow–Vladivostok in 21 days).

Conclusion

The 6×4 Diesel Tractor Truck remains the optimal TCO (Total Cost of Ownership) solution for harsh-environment operations in target markets. SEA LION’s technical stewardship—from specification to lifecycle support—ensures 32% lower operational downtime (vs. industry average) and 15-year asset viability. This platform is not merely a vehicle but a verifiable productivity multiplier for partners demanding industrial resilience.

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Data Source: SEA LION Field Performance Database (2023–2025); OEM Technical Specifications (SINOTRUK/SHACMAN/XCMG 2026 Platform Release)
Compliance: ISO 9001:2015 | ISO 14001:2015 | IATF 16949:2016

Technical Specifications & Parameters

Industrial Specification Report 2026

Target Audience: Fleet Managers & Construction Companies
Vehicle Type: 6×4 Diesel Tractor Truck

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Technical Specifications

Parameter	Specification Details
Configuration	6×4 (Triple-Axle, Rear Dual-Drive)
Engine Model	Weichai WD615.77C
Engine Type	Inline 6-Cylinder, Water-Cooled, Turbocharged & Intercooled Diesel
Displacement	9.726 L
Horsepower	371 hp (273 kW) @ 2,200 rpm
Peak Torque	1,400 N·m @ 1,200–1,600 rpm
Emission Standard	China VI (Equivalent to Euro VI)
Fuel System	High-Pressure Common Rail (HPCR)
Transmission	HW19710 – 10-Speed Manual (Synchronized, Dual H-Shift Pattern)
Clutch	Φ430 mm, Pneumatic Assist
Front Axle	MAN-Tech Parabolic Beam, Load Capacity: 7,000 kg
Rear Tandem Axles	HC160 Dual Reduction Hypoid Gears (Hypoid Final Drive), Load Capacity: 18,000 kg (each)
Total Axle Load	18,000 kg (Front) + 36,000 kg (Rear Tandem) = 54,000 kg Gross Axle Load Capacity
Suspension (Front)	Parabolic Leaf Spring
Suspension (Rear)	Multi-Leaf Semi-Elliptic with Walking Beam
Tire Specification	12.00R20 18PR, Radial, Tubeless
Braking System	Dual-Circuit Air Brake with ABS, EBS (Electronic Brake System)
Cab Type	High-Roof, Full-Steel Cabin with Suspension, 3-Bed Configuration
Fuel Tank Capacity	600 L (Aluminum, Main) + 200 L (Secondary, Optional)

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Fuel Efficiency Analysis

The Weichai WD615.77C engine is optimized for heavy-duty hauling with fuel economy as a key design criterion. Under standard operating conditions (loaded 40-ton GCW, mixed highway/grade terrain), the 6×4 tractor achieves:

• Average Fuel Consumption: 28–32 L/100 km
• Optimized Efficiency Range: 1,100–1,500 rpm (via HW19710 gear mapping)
• Eco-Driving Features:
• Intelligent cruise control
• Gear-shift advisory system
• Low-rolling-resistance 12.00R20 tires (optional fuel-saving compound)

Fuel efficiency is further enhanced by the HW19710 transmission’s wide gear ratio spread (1.0–13.68), enabling optimal engine load management across gradients.

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Load Capacity & Operational Suitability

• Maximum GCW (Gross Combination Weight): 60,000 kg
• Recommended Trailer Match: 40–50 ft Flatbed or Lowboy Trailers
• Payload Capacity (Typical): 45–50 metric tons (dependent on trailer and regional regulations)
• Traction Performance:
• 6×4 configuration ensures balanced weight distribution
• Dual rear axles provide superior traction and tire life in off-highway or wet conditions

This configuration is ideal for:
– Heavy construction material transport (aggregate, steel, precast)
– Long-haul infrastructure logistics
– Mining and quarry operations with moderate off-road use

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Summary

The 6×4 Diesel Tractor Truck equipped with the Weichai WD615.77C engine, HW19710 transmission, and 12.00R20 radial tires delivers robust performance for high-load, high-utilization environments. With a total axle load capacity of 54,000 kg and fuel consumption averaging under 32 L/100 km, it offers a balanced solution for fleet managers prioritizing durability, payload efficiency, and operational cost control in 2026 and beyond.

Quality Control & Inspection Standards

INDUSTRIAL SPECIFICATION REPORT: SEA LION 6×4 DIESEL TRACTOR TRUCK

Document ID: SL-TRAC-6×4-MFG-PDI-2026
Effective Date: 01 January 2026
Prepared For: Fleet Operations Managers & Construction Equipment Procurement Teams

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EXECUTIVE SUMMARY

This report details the manufacturing quality standards and Pre-Delivery Inspection (PDI) protocols for the SEA LION International 6×4 Diesel Tractor Truck (Model: SL-TT64-450D), engineered explicitly for high-stress construction and off-highway applications. Emphasis is placed on validated chassis integrity for unimproved terrain and extended engine service life under sustained heavy-load conditions. All specifications comply with ISO 3833:1977, SAE J2003, and FMVSS 121/126 standards.

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1. MANUFACTURING QUALITY: CORE STRUCTURAL & POWERTRAIN

1.1 Chassis Construction for Rough Terrain

The SL-TT64-450D chassis utilizes a monolithic frame design fabricated from ASTM A572 Grade 50 high-strength low-alloy (HSLA) steel, processed through SEA LION’s proprietary Roll-Formed Stress-Relieved (RFSR) methodology. Key features:

• Frame Rails: Tapered cross-section (80mm x 175mm x 8.0mm top flange / 6.0mm web / 10.0mm bottom flange) with continuous robotic MIG welding (AWS D1.1 compliant). Yield strength: 345 MPa minimum.
• Crossmember Integration: 12 longitudinal crossmembers (vs. industry standard 8–10) spaced ≤ 850mm center-to-center. Constructed from 100mm x 50mm x 4.0mm RHS steel, welded and bolted (Grade 10.9) to frame rails.
• Reinforcement Zones: Critical stress points (fifth wheel, suspension mounts, cab mounts) feature localized gusseting and dual-layer steel plating (total thickness ≥ 16mm).
• Corrosion Protection: Electrophoretic cathodic dip primer (E-coat) + 80µm zinc-rich epoxy topcoat (ISO 12944 C5-M rating).

Material & Performance Verification (Per Batch):

Parameter	Specification	Test Method	Acceptance Criteria
Frame Rail Yield Strength	≥ 345 MPa	ASTM A370	100% batch validation
Weld Penetration	100% of base metal	Ultrasonic (AWS D1.1)	Zero incomplete fusion
Frame Twist Tolerance	≤ 1.5mm/m length	Laser Alignment	Per drawing SL-FRM-64-001
Salt Spray Resistance	≥ 1,500 hours	ASTM B117	< 5% base metal corrosion

1.2 Engine Durability System (Cummins X15 500HP)

The integrated Cummins X15 diesel engine (OEM: ISX15 500HP) undergoes SEA LION-specific durability enhancements during final assembly:

• Reinforced Critical Components: Upgraded forged steel crankshaft (SAE 4340), nitrided camshaft lobes, and piston cooling oil jets (doubled flow rate vs. standard).
• Thermal Management: Dual-circuit cooling system with oversized aluminum radiator (core depth: 76mm) and auxiliary transmission oil cooler (40 L/min capacity). Coolant flow validated at 120°C ambient.
• Assembly Protocol: Cleanroom assembly (ISO Class 8) with 100% torque sequencing monitored via calibrated tools (traceable to NIST). All main bearings measured for clearance (0.06–0.09mm).
• Emissions Compliance: Integrated SCR + DPF system with hardened catalyst substrate (30% higher platinum group metal loading) for extended service intervals in dusty environments.

Engine Validation Metrics (Post-Assembly):

Parameter	Specification	Test Duration	Acceptance Criteria
Cold Start Reliability	-30°C ambient	50 cycles	≤ 5 sec crank time
Oil Pressure Stability	2,200 RPM @ 100°C oil	30 min	45–65 psi (no drop >5 psi)
Exhaust Gas Temp (EGT)	Max load @ 1,800 RPM	15 min	≤ 650°C (peak)
Blow-by Rate	Rated load	Steady-state	≤ 12 CFM

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2. PRE-DELIVERY INSPECTION (PDI) PROTOCOL

All units undergo a 127-point PDI at SEA LION Final Assembly Plant (FAP), with critical focus on structural and powertrain integrity. PDI is documented via digital audit trail (ISO 9001:2015 compliant).

2.1 Structural Verification (Rough Terrain Focus)

• Frame Alignment: Laser metrology checks at 15 points along frame rails. Tolerance: ±1.0mm deviation over full length (8,200mm).
• Weld Integrity Scan: Full-frame ultrasonic testing (UT) of all primary welds. Rejection threshold: indications >3mm length in critical zones.
• Suspension Mount Load Test: Hydraulic rams apply 150% of GVWR (36,287 kg) to front/rear suspension mounts. Max deflection: ≤ 2.5mm.
• Fifth Wheel Interface: Torque test at 50,000 Nm (SAE J2638). No plastic deformation permitted.

2.2 Powertrain Validation (Durability Focus)

• Engine Break-in Cycle: Computer-controlled dynamometer run (0–100% load, 3 cycles). Monitors oil temp, coolant pressure, and vibration (ISO 10814-1).
• Real-World Simulation: On-chassis road simulator subjects driveline to 500 simulated pothole impacts (200mm drop height @ 15 km/h). Vibration signature compared to baseline.
• Fluid Contamination Check: Oil and coolant samples analyzed via particle counter (ISO 4406). Acceptance: ≤ 18/16/13.
• Exhaust System Integrity: Pressurized leak test (15 psi) with thermal imaging to detect hot-spot weaknesses.

Critical PDI Checklist Items for Fleet Acceptance:

PDI Stage	Verification Point	Method	Pass/Fail Criteria
Structural	Frame rail twist	Laser alignment	≤ 1.5mm/m
Structural	Suspension mount weld integrity	Ultrasonic testing	Zero defects >3mm
Powertrain	Engine oil pressure stability	Dyno load test	±5 psi deviation max
Powertrain	Aftertreatment regeneration cycle	ECU diagnostics	Complete within 25 min
Systems	ABS/EBS response time	Skid pad test (0.8g decel)	≤ 0.2 sec activation

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CONCLUSION

The SEA LION SL-TT64-450D 6×4 Tractor Truck is manufactured to exceed structural and durability demands of construction fleet operations. The RFSR chassis design, validated through rigorous material testing and PDI load simulations, ensures operational resilience on unimproved terrain. Engine durability is guaranteed via enhanced component specification, controlled assembly environment, and validated break-in protocols. This integrated quality system reduces in-service structural failures by ≥40% and extends engine TBO (Time Between Overhauls) to 1,200,000 km under typical construction cycle duty (based on SEA LION Field Data 2025). Fleet managers can expect minimized downtime and reduced lifecycle costs through adherence to these specifications.

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END OF REPORT

Shipping & Logistics Solutions

Industrial Specification Report 2026

Prepared for Fleet Managers & Construction Companies
Subject: Logistics Solutions for Exporting 6×4 Diesel Tractor Trucks from China

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1. Executive Summary

This report evaluates three primary maritime transport methods—Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack container shipping—for the export of 6×4 Diesel Tractor Trucks from manufacturing hubs in China (e.g., Qingdao, Shanghai, Guangzhou) to global destinations. The analysis focuses on cost-efficiency, cargo integrity, transit time, and corrosion protection, including the use of wax-based anti-corrosion treatments to mitigate seawater exposure risks.

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2. Equipment Specifications: 6×4 Diesel Tractor Truck

Parameter	Specification
Configuration	6×4 (Triple Axle, Rear Dual Drive)
GVWR	25,000–31,000 kg
Length	6.2–7.0 m
Width	2.5 m (max legal width)
Height	3.8–4.0 m
Weight (Unladen)	8,500–10,500 kg
Fuel Type	Diesel (Euro V/VI compliant)
Origin Hubs	Qingdao Port, Shanghai Port, Nansha Port (Guangzhou)

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3. Shipping Method Comparison

Criteria	RO-RO (Roll-on/Roll-off)	Bulk Cargo (Lo-Lo)	Flat Rack Container
Loading Method	Self-driven onto vessel via ramps	Lifted by shipboard cranes	Secured on open-sided flat rack (20′ or 40′)
Cargo Protection	Moderate (exposed decks); wax spray recommended	Low (exposed to elements during loading)	High (full undercarriage access; wax + tarp options)
Corrosion Risk	High (direct salt spray exposure)	High (handling exposure + deck stowage)	Moderate (controlled wax application + tarp cover)
Securing Mechanism	Wheel chocks, lashing straps	Lashing, frame clamps	Twist locks, lashing bars, dunnage
Transit Time	Fast (direct roll-on/off)	Moderate (crane delays)	Moderate (container terminal handling)
Port Accessibility	Limited to RO-RO-capable terminals	Widely accessible	Global container port network
Cost (USD/unit)	$1,800–$2,400	$1,500–$2,000	$2,600–$3,500
Damage Risk	Medium (potential for minor impact)	High (lifting damage, misrigging)	Low (controlled loading, full visibility)
Best For	High-volume fleet shipments to RO-RO ports	Cost-sensitive, non-urgent deliveries	High-value units, corrosive routes, oversized loads

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4. Corrosion Protection: Wax Spraying Protocol

To mitigate saltwater-induced corrosion during marine transit, wax-based anti-corrosion treatment is strongly recommended for all export units, particularly in RO-RO and Bulk Cargo shipments where exposure is elevated.

Wax Spraying Specifications:

Parameter	Specification
Product Type	Solvent-based or hybrid cationic wax emulsion
Application Method	High-pressure spray (undercarriage, chassis rails, suspension, wheel hubs)
Coverage Area	Full undercarriage + exposed metal joints + battery compartment
Film Thickness	20–30 µm (dry)
Drying Time	4–6 hours (ambient)
Salt Spray Resistance	>500 hrs (per ASTM B117)
Reapplication Interval	Not required for single transit (60-day max exposure)

Note: Wax treatment adds $80–$120 per unit but reduces field warranty claims by up to 40% in coastal delivery zones.

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5. Recommended Logistics Strategy

Scenario	Recommended Method	Rationale
High-volume fleet delivery to Middle East/Africa	RO-RO + Wax Spray	Fast discharge, cost-effective at scale; wax mitigates Red Sea/Indian Ocean salinity
Single-unit or low-volume to South America	Flat Rack	Superior protection, compatibility with container ports, ease of inspection
Budget export to Southeast Asia	Bulk Cargo + Wax Spray	Low cost, acceptable risk over short sea routes; wax essential for humidity protection

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6. Compliance & Documentation

• Export Clearance (China): CO (Certificate of Origin), CIQ Inspection, Export License
• Marine Insurance: All-risk coverage including seawater corrosion and transit damage
• Cargo Marking: ISO container codes (if Flat Rack), IMO hazard labels (fuel tanks), and anti-theft seals

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7. Conclusion

For fleet managers and construction logistics planners, RO-RO shipping offers the most efficient solution for bulk 6×4 tractor truck exports from China when paired with industrial-grade wax corrosion protection. Flat Rack containers provide the highest asset protection for high-value or long-transit shipments, while Bulk Cargo remains a cost-competitive option for price-sensitive operations with acceptable risk tolerance.

Proactive anti-corrosion measures, especially wax undercoating, are non-negotiable for maintaining equipment integrity across all methods. SEA LION International recommends integrating wax spraying into pre-shipment protocols for all maritime exports.

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Document ID: SL-LOG-ISR-2026-041
Revision: 1.2
Classification: Internal Use – Industrial Logistics