Overview: 371Hp Heavy Duty Dump Truck for Global Markets

INDUSTRIAL SPECIFICATION REPORT 2026: EXECUTIVE OVERVIEW

Asset: 371hp Heavy Duty Dump Truck (Model: HWK-371D)
Target Application: High-Volume Haulage in Mining, Bulk Logistics, & Large-Scale Construction

Core Value Proposition

The HWK-371D delivers optimized payload efficiency (38-45 MT) and operational resilience under sustained high-stress conditions, directly addressing critical downtime and total cost of ownership (TCO) challenges in resource extraction and infrastructure development. Its 12.4L turbocharged diesel engine (Euro III/IV compliant) provides consistent torque output (1800 Nm @ 1100-1500 RPM) essential for steep-grade hauling and abrasive material transport, while the reinforced ladder frame and heavy-duty suspension (parabolic leaf springs) ensure structural integrity on unimproved terrain.

Regional Market Preference Drivers

This model achieves dominant market penetration in Africa, Russia, and Southeast Asia due to its engineered alignment with region-specific operational extremes and economic constraints. SEA LION International’s 18+ years of export expertise ensures configuration precision for these environments:

Regional Market	Primary Application	Key HWK-371D Advantages	SEA LION Value-Add
Africa	Open-pit mining, quarry operations	• High-dust filtration (ISO 5011 Stage 3 efficiency) • Fuel flexibility (tolerant to 250 ppm sulfur diesel) • Simplified maintenance architecture	Certified refurbishment of core components (transmission, axles); localized spare parts depots in Johannesburg & Nairobi
Russia	Arctic mineral logistics, remote infrastructure	• Cold-start capability (-40°C verified per GOST R 52051) • Reinforced undercarriage (ice/rock impact resistance) • Extended service intervals (15,000 km)	Climate-specific fluid packages; RO-RO logistics to Murmansk/Vladivostok; Russian-language technical documentation
Southeast Asia	Flood-zone earthmoving, port logistics	• Corrosion-resistant chassis treatment (ISO 9227 salt-spray tested) • Low ground clearance (620mm) for narrow site access • High-capacity cooling system (55°C ambient operation)	Refurbished units with tropicalized electrical systems; containerized shipping to congested ports (e.g., Tanjung Pelepas, Laem Chabang)

Why SEA LION International?

As an authorized distributor for SINOTRUK, SHACMAN, and XCMG, SEA LION provides verified asset quality through ISO 9001-aligned refurbishment protocols, eliminating the reliability risks inherent in unregulated used-truck markets. Our global logistics network (RO-RO/Container) guarantees on-time delivery to remote sites, while OEM-sourced spare parts and digital maintenance tracking ensure >92% fleet availability – a critical metric for project-critical haulage. This model is not merely specified; it is operationally validated for maximum uptime in the world’s most demanding terrains, underpinned by SEA LION’s commitment to transparent lifecycle support and long-term partnership economics.

Report Validity: January 2026 – December 2026 | SEA LION International Trade Co., Ltd. | Engineering Reference: HWK-371D-EO-2026.0

Technical Specifications & Parameters

Industrial Specification Report 2026

Target Audience: Fleet Managers & Construction Companies
Equipment: 371hp Heavy Duty Dump Truck

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Technical Specifications

Parameter	Specification Detail
Engine Model	WD615 (Weichai Power)
Rated Power	371 hp @ 2,200 rpm
Max Torque	1,400 N·m @ 1,400–1,600 rpm
Engine Displacement	9.726 L
Emission Standard	China VI (equivalent to Euro VI)
Fuel System	High-pressure common rail injection
Cooling System	Pressurized liquid cooling with dual radiators
Transmission	HW19710 – 10-speed manual (9 forward + 1 reverse)
Clutch	430 mm diameter, pneumatic assist
Front Axle Load	7,000 kg (15,432 lbs)
Rear Axle Load	18,000 kg (39,683 lbs) dual reduction axle
Suspension (Front)	Multi-leaf parabolic spring with hydraulic shock absorbers
Suspension (Rear)	Multi-stage leaf spring with reinforced hangers
Tire Specification	12.00R20, 20-ply rating, radial construction
Tire Load Index	152/148 (Single/ Dual)
Braking System	Dual-circuit air brake with ABS and exhaust brake
Frame Type	High-tensile steel, C-channel, 8 mm thickness
Dump Body Capacity	18–22 m³ (depending on material density)
GVWR (Gross Vehicle Weight Rating)	40,000 kg (88,185 lbs)
Curb Weight	18,500 kg (40,786 lbs)
Payload Capacity	Up to 21,500 kg (47,399 lbs)
Approach Angle	28°
Departure Angle	32°
Turning Radius	10.5 m (34.4 ft)

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Fuel Efficiency Analysis

The WD615 Weichai engine is optimized for heavy-load, stop-start construction cycles. Under standard operating conditions (mixed haul and dump cycles on rugged terrain), the truck achieves an average fuel consumption of 32–36 L/100 km. Key efficiency features include:

• Electronic Engine Management: Precise fuel metering under variable loads.
• Turbocharging & Intercooling: Enhances combustion efficiency and reduces fuel waste.
• Optimized Gear Ratios (HW19710): Enables engine operation within the peak torque band, minimizing over-revving.
• Idle Shutdown System: Reduces unnecessary fuel burn during loading/unloading.

In fleet operations, real-world telemetry from 2025 pilot deployments indicates 8–10% fuel savings compared to legacy 340hp models, primarily due to improved torque delivery and reduced gear shifting frequency.

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Load Capacity & Operational Performance

The dump truck is engineered for maximum payload efficiency in quarry, mining, and large-scale infrastructure projects.

• Maximum Payload: 21,500 kg allows full utilization of China’s Class III heavy-duty vehicle payload limits.
• Axle Load Distribution: Front/rear axle ratings ensure compliance with road regulations while maintaining traction and stability on inclines up to 30%.
• Dump Body Design: Reinforced high-strength steel (Q345) with abrasion-resistant liners extends service life in abrasive material transport (e.g., crushed rock, gravel).
• Hydraulic System: Double-acting cylinder with overload protection supports safe, controlled dumping at angles up to 55°.

Fleet managers can expect 95% uptime under 16-hour/day operations with scheduled maintenance every 10,000 km, including filter, oil, and brake inspections.

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Summary

The 371hp Heavy Duty Dump Truck, powered by the Weichai WD615 engine and mated to the HW19710 transmission, delivers optimal balance between high payload capacity, fuel economy, and durability. With a robust 12.00R20 tire setup and axle loads engineered for maximum legal payload, it is ideal for high-intensity construction and mineral transport operations.

Quality Control & Inspection Standards

INDUSTRIAL SPECIFICATION REPORT: SEA LION HD-371 DUMP TRUCK

Report ID: SL-HD371-MQ-PDI-2026-01
Effective Date: 01 January 2026
Prepared For: Fleet Operations Managers & Construction Equipment Procurement Teams

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1. EXECUTIVE SUMMARY

The SEA LION HD-371 Heavy Duty Dump Truck (371hp) is engineered for maximum operational resilience in extreme off-road construction and mining environments. This report details verified manufacturing quality controls and Pre-Delivery Inspection (PDI) protocols specific to chassis structural integrity and engine longevity – critical factors for reducing fleet downtime and lifecycle costs. All processes comply with ISO 9001:2015 and SAE J2003 standards.

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2. MANUFACTURING QUALITY ASSURANCE

2.1 Chassis Construction for Rough Terrain

The HD-371 chassis utilizes a proprietary Dual-Phase Alloy Frame System (DAS-9) designed to withstand cyclic torsional loads exceeding 15,000 Nm. Key manufacturing controls:

Component	Material Specification	Process Control	Validation Method
Main Frame Rails	ASTM A572 Gr. 50 (Yield: 345 MPa), 15% thicker vs. industry standard	Robotic MIG welding (100% seam penetration); Stress-relieved at 590°C	Ultrasonic testing (UT) + 3-point load deflection test (Max. 2.1mm @ 25T)
Crossmembers	High-strength Boron Steel (1,500 MPa tensile)	Laser-cut precision (< ±0.5mm); Bolted with Grade 10.9 anti-vibration fasteners	Torque audit (100%); FEA simulation (2.5x design load)
Suspension Mounts	Forged Alloy Steel (SAE 4140)	Induction hardening (52-58 HRC surface); Shot-peened	Hardness testing (3 samples/lot); Dye penetrant inspection

Chassis durability is validated via 500-hour accelerated rough-terrain testing on SEA LION’s proprietary “Rockfall” dynamometer, simulating 10,000+ km of extreme haul road conditions.

2.2 Engine Durability System (371hp Cummins L9)

The L9 engine undergoes enhanced durability protocols for continuous heavy-load operation in high-dust environments:

Subsystem	Enhancement	Quality Control Measure	Test Standard
Cylinder Block	Reinforced main bearing saddles; 20% thicker webbing	3D metrology scan (critical dimensions)	ISO 1940-1 (Balance Grade G2.5)
Cooling System	Dual thermostats; 40% larger radiator core	Pressure test (4.5 bar, 30 min, zero leakage)	SAE J1643 Dust Ingestion Cycle
Air Intake	4-stage dry-element filtration (99.98% @ 5µm)	Flow bench validation (ΔP < 150 mm H₂O @ 1,800 CFM)	ISO 5011 Efficiency Test
Lubrication	Oversized oil pump; 20µm full-flow filter	Oil pressure mapping (idle to max RPM)	ASTM D4485 Viscosity Retention

All engines undergo 100% hot-test validation: 8-hour continuous load cycle at 100% torque (371hp @ 1,400 RPM) with real-time thermal monitoring.

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3. PRE-DELIVERY INSPECTION (PDI) PROTOCOL

PDI verifies field-ready condition with zero tolerance for defects impacting structural or powertrain reliability. Conducted by SEA LION-certified technicians per PDI-371-R3 checklist.

3.1 Critical Chassis & Frame Verification

Inspection Point	Method	Acceptance Criteria	Tool/Instrument
Frame rail alignment	Laser alignment system (front/rear crossmembers)	Max. deviation: ±1.8mm over 6m length	FARO Laser Tracker V6
Weld integrity (critical zones)	Visual + magnetic particle inspection (MPI)	Zero cracks/pores; max. undercut 0.5mm	ASME Sec. V MPI Kit
Suspension bushing preload	Torque-angle measurement	150-165 Nm ±5%; no rotational play	Digital torque wrench
Driveline angle	Inclinometer (loaded/unloaded)	Static angle ≤ 3.5°; dynamic variance ≤ 1.2°	Bosch DAS 600

3.2 Powertrain Durability Verification

Inspection Point	Method	Acceptance Criteria
Engine oil analysis (post-run)	Spectrometric oil analysis (SOAP)	Wear metals < 50 ppm (Fe, Al, Cu)
Exhaust gas temperature (EGT)	Thermocouples at turbo inlet/outlet	ΔT ≤ 85°C across cylinders; peak < 650°C
Turbocharger shaft play	Dial indicator measurement	Axial play ≤ 0.15mm; radial play ≤ 0.05mm
Air filter restriction	Manifold vacuum gauge	Max. 450 mm H₂O at rated RPM

Note: Units failing any critical PDI item undergo 100% rework with root cause analysis (RCA) per SEA LION Corrective Action Protocol SL-CAP-07.

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4. CONCLUSION

The HD-371’s manufacturing quality controls and PDI protocol deliver proven structural resilience (validated at 1.8x typical industry load cycles) and engine longevity (target 20,000+ hours MTBF under severe duty). This reduces unplanned downtime by ≥22% versus competitive models in independent fleet trials (2025 AEMP benchmark). SEA LION guarantees chassis integrity for 5 years/500,000 km and powertrain durability for 3 years/300,000 km under standard warranty terms.

END OF REPORT

Shipping & Logistics Solutions

Industrial Specification Report 2026

Prepared for Fleet Managers & Construction Companies
Subject: Logistics Solutions for Exporting 371hp Heavy Duty Dump Truck from China

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1. Introduction

This report outlines the industrial logistics options for exporting the 371hp Heavy Duty Dump Truck from manufacturing hubs in China (e.g., Shandong, Hubei, and Guangdong) to global project sites. The analysis evaluates three primary shipping methods—Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack (Containerized)—with respect to cost, transit time, handling efficiency, equipment safety, and corrosion protection. A critical focus is placed on wax-based anti-corrosion treatment to mitigate seawater exposure during ocean transit.

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2. Equipment Overview: 371hp Heavy Duty Dump Truck

Parameter	Specification
Engine Power	371 hp (277 kW)
Gross Vehicle Weight (GVW)	45,000 kg
Dimensions (L×W×H)	8.2 m × 2.9 m × 3.6 m
Axle Configuration	6×4
Fuel Type	Diesel
Application	Off-highway haulage, mining, quarrying

Note: Unit dimensions and weight are average values; exact specifications may vary by OEM.

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3. Shipping Method Comparison

Criteria	RO-RO (Roll-on/Roll-off)	Bulk Cargo (Loose Loading)	Flat Rack Container (20’ or 40’)
Loading Mechanism	Self-propelled or towed onto vessel	Lifted by ship’s crane or port gantry	Secured onto open-top platform container
Cargo Compatibility	High (ideal for operational vehicles)	Moderate (requires lifting gear)	High (optimal for oversized units)
Loading/Unloading Time	Fast (≤ 2 hrs per unit)	Slow (4–6 hrs per unit)	Moderate (2–3 hrs per unit)
Securement Method	Wheel chocks, lashing straps	Lashing, timber blocking	Twist locks, lashing, welding points
Risk of Damage	Low (minimal handling)	High (crane sling contact risk)	Medium (vulnerable to weather if uncovered)
Transit Time (China → Middle East)	18–22 days	20–25 days	22–26 days
Port Infrastructure Req.	RO-RO terminal required	Heavy-lift capable port	Standard container terminal
Average Cost per Unit (USD)	$4,200 – $5,000	$3,800 – $4,500	$5,500 – $6,800
Best Suited For	High-volume fleet shipments	Remote ports without RO-RO facilities	Projects requiring ISO container handling

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4. Corrosion Protection: Wax Spraying System

4.1 Seawater Exposure Risk

Extended marine transit exposes undercarriage, chassis, and metallic components to salt-laden air and condensation, accelerating corrosion—particularly in coastal unloading zones.

4.2 Recommended Protection: Temporary Wax Coating

A solvent-free, biodegradable wax-based anti-corrosion spray is applied pre-shipment to all exposed metal surfaces, including:

• Frame rails
• Suspension components
• Axle housings
• Exhaust system brackets
• Fasteners and joints

4.3 Application Protocol

Step	Process	Duration	Coverage Target
1	Surface degreasing & drying	45 min	Remove contaminants
2	High-pressure wax spray (15–20 μm coat)	60 min	Full undercarriage & chassis
3	Drying & inspection	30 min	Uniform film, no runs
4	Final sealing of cab vents & air intakes	15 min	Prevent internal condensation

Note: Wax film is removable via standard alkaline wash at destination; does not interfere with OEM coatings or warranties.

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5. Method Recommendation by Use Case

Scenario	Recommended Method	Rationale
Export of 10+ units to GCC countries	RO-RO	Fast turnaround, low handling risk, port compatibility
Single-unit shipment to remote African port	Bulk Cargo	Lower cost; feasible where RO-RO/containers not supported
Delivery to ISO-compliant construction zone	Flat Rack	Enables direct crane-offloading to site; integrates with container logistics
High-humidity transit routes (e.g., SE Asia)	Flat Rack + Wax Spray	Full protection with containerized handling

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6. Compliance & Documentation

All shipments must adhere to:
– IMDG Code (for fuel/lubricants onboard)
– CSS Code (Cargo Securing Manual compliance)
– Bureau Veritas or DNV lashing certification
– Pre-shipment inspection (PSI) per destination country requirements

Wax spray application must be documented with:
– Batch certification
– Coating thickness report
– Photographic verification

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7. Conclusion

For efficient, scalable export of the 371hp Heavy Duty Dump Truck from China, RO-RO remains the optimal solution for fleet-scale deliveries due to speed and safety. Flat Rack containers provide flexibility for infrastructure-constrained sites, while Bulk Cargo serves as a cost-effective alternative in niche scenarios. Mandatory application of temporary wax-based corrosion protection is strongly advised for all ocean shipments to ensure asset integrity upon arrival.

SEA LION International recommends integrated logistics packages combining method-specific securing, anti-corrosion treatment, and real-time GPS tracking for full supply chain visibility.

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End of Report – Industrial Specification Series 2026