High Cube Container With Double Doors

High Cube Containers With Double Doors | Industrial Engineering & Procurement Specification

Dimensional Specifications & Technical Matrix

The High Cube Container with Double Doors combines the 9'6" internal vertical clearance of a standard high cube footprint with dual-access end bulkheads. Designed for intermodal freight and industrial storage, this configuration eliminates internal logistics bottlenecks by enabling pass-through forklift handling and multi-point cargo access.

Technical Parameter	20ft HC Double Door (Tunnel)	40ft HC Double Door (Tunnel)
External Dimensions (L x W x H)	6,058 x 2,438 x 2,896 mm	12,192 x 2,438 x 2,896 mm
Internal Dimensions (L x W x H)	5,898 x 2,350 x 2,698 mm	12,032 x 2,350 x 2,698 mm
Door Opening Clearance (W x H)	2,340 x 2,585 mm	2,340 x 2,585 mm
Internal Cubic Capacity	37.4 m3	76.2 m3
Tare Weight (Approx.)	2,350 kg	4,050 kg
Max Gross Weight (CSC Rated)	30,480 kg	32,500 kg
Max Payload Capacity	28,130 kg	28,450 kg

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Metallurgy & Manufacturing Specifications

Structural performance relies on strict material control and automated fabrication parameters:

Steel Grade: Structural frames, corner posts, and corrugated wall panels utilize Corten-A (SPA-H) weathering steel. Minimum yield strength: 345 MPa; minimum tensile strength: 480 MPa.
Flooring Construction: 28mm marine-grade waterproof hardwood/apitong composite plywood, secured with countersunk self-tapping steel screws, rated for 7,260 kg forklift axle loads per ISO 1496-1.
Sealing System: EPDM rubber door gaskets featuring a 4-lip compression profile, engineered to resist UV degradation and maintain elasticity across operational temperatures from -40C to 70C.
Welding Parameters: Semi-automatic CO2 gas-shielded arc welding performed by AWS D1.1 certified technicians. 100% weld seam non-destructive testing (NDT) applied to weather-critical roof joints and corner fittings.

Surface Protection Treatment:

Abrasive blast-cleaned to Sa 2.5 surface cleanliness.
Zinc-rich epoxy primer applied at 40-50 um dry film thickness (DFT).
Intermediate high-build epoxy coat applied at 80 um DFT.
Polyurethane topcoat finish applied at 40-50 um DFT (total dry film thickness >= 160 um).

Variant Classification & Site Selection

Dual-End (Tunnel) Configuration:

Double doors installed at both front and rear bulkheads. Eliminates retrieval blockages, enabling FIFO (First-In, First-Out) inventory handling without unpacking intermediate cargo.

Modified Industrial Outfitting:

Available with factory-integrated options including louvered ventilation grills, heavy-duty security lock boxes, electrical distribution raceways, and personnel access doors.

Operational Applications

Heavy Machinery Logistics:

Utilizing 9'6" vertical clearance and dual-end access for oversized plant components and rolling stock.

On-Site Tool Cribs & Field Workshops:

Deploying 40ft units as secure, walk-through operational hubs for construction and energy sites.

Energy & Infrastructure Camps:

Leveraging Corten-A corrosion resistance in high-salinity marine or extreme desert environments.

Event Infrastructure:

Rapid deployment of secure inventory staging points requiring high-frequency, multi-point access.

Quality Inspection & Statutory Certifications

Production batches undergo systematic factory testing prior to release:

Dimensional Audit: Laser-guided checks verifying diagonal squareness, corner casting tolerances (+/- 1.5 mm), and door frame alignment.
Watertightness Verification: High-pressure rotating jet testing (>= 100 kPa nozzle pressure) executed along all gasket perimeters and weld seams to ensure zero water ingress.
Structural Load Testing: Verified per ISO 1496 requirements-stacking test (loaded to 192,000 kg on bottom corner castings) and floor dynamic axle load testing.

Regulatory Compliance:
CSC Plate: Validated by independent IACS classification societies (ABS, BV, LR, DNV).
ISO Standards: Compliant with ISO 668, ISO 1161, and ISO 1496-1.
TIR Certification: Customs compliance for international overland border transit.

Supplier Auditing Guidelines for Procurement Teams

Prior to issuing an RFQ or purchase order, technical audit parameters should include:

Steel Mill Test Certificates (MTC):

Request documentation confirming exact chemical composition percentages for SPA-H steel (specifically Copper, Chromium, and Nickel contents).

Blast Profile Verification:

Confirm surface preparation reports achieving a 50-75 um anchor pattern prior to primer application.

Classification Society Authorization:

Verify that the manufacturing facility maintains active certification rights with an IACS member for direct CSC plate issuance.

Export Bundling Protocols:

Confirm transport securement specifications for empty multi-unit shipments ("cargo-worthy" or "one-way" delivery) to prevent transit racking or structural denting.

RFQ Submission Parameters

To streamline technical review and freight quotation, inquiries should specify:

Order Volume & Incoterms:

State exact unit quantity and destination port/facility terms.

Dimensional Profile:

20ft HC or 40ft HC, specifying dual-end access requirements.

Classification Requirement:

Nominate preferred IACS society for CSC plating.

Paint Specifications:

Provide RAL exterior color code.

Custom Modification Scope:

Attach CAD drawings for any integrated electrical, insulation, or ventilation cutouts.

FAQ

Q: What is the exact door clearance height of a High Cube Double Door container compared to a standard unit?

A: A High Cube Double Door container offers an internal height of 2,698 mm and a door opening height of 2,585 mm. This yields approximately 300 mm (12 inches) of additional vertical clearance over standard 8'6" height models, accommodating tall industrial equipment and upright forklift masts.

Q: Do double-end doors reduce structural load capacity during vertical stacking?

A: No. Structural rigidity is maintained by reinforcing the door frame headers with heavier gauge structural steel sections and designing corner posts to transfer vertical compressive loads directly down to the bottom corner castings. Units maintain standard ISO stacking ratings up to 9 high when fully loaded.

Q: Are these containers cleared for international ocean freight?

A: Yes. All units intended for intermodal transit are inspected and certified by an IACS member society, carrying an authentic CSC safety approval plate valid for marine, rail, and road transport.

Q: How is corrosion prevented along the modified dual-door frames?

A: All structural weld zones, door frames, and locking gear undergo abrasive blast cleaning to Sa 2.5, followed immediately by an epoxy primer, intermediate build coat, and polyurethane topcoat system (>= 160 um total DFT). Perimeter sealing relies on compression-molded EPDM gaskets.

Q: Can these units be pre-fitted with insulation or electrical raceways prior to delivery?

A: Yes. Factory-level fabrication supports custom structural modifications including insulation panels, interior partition walls, louvered vents, and electrical distribution trunking built to client specifications prior to final coating.

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