Executive Summary & Core Technical Specifications

40ft High Cube Double Door Storage Container | Technical Specifications & Procurement Guide

The 40ft High Cube Double Door Container provides dual-end access combined with an extra 12 inches of vertical clearance compared to standard ISO containers. Manufactured from structural weathering steel with double-hinged cargo doors at both ends, this unit is engineered for rapid loading cycles, heavy equipment staging, and efficient FIFO (First-In, First-Out) inventory management.

Key Technical Parameters

Specification	Metric Value	Imperial Value
External Length	12,192 mm	40 ft
External Width	2,438 mm	8 ft
External Height	2,896 mm	9 ft 6 in (High Cube)
Internal Length	12,032 mm	39 ft 5.6 in
Internal Width	2,352 mm	7 ft 8.6 in
Internal Height	2,698 mm	8 ft 10.2 in
Door Aperture Width	2,340 mm	7 ft 8.1 in
Door Aperture Height	2,585 mm	8 ft 5.8 in
Tare Weight	~4,180 kg	~9,210 lbs
Max Gross Weight (MGW)	32,500 kg	71,650 lbs
Payload Capacity	~28,320 kg	~62,440 lbs

Product Engineering & Material Specification

Material Composition
Corrugated Walls & Roof: 2.0 mm thick Corten-A (SPA-H) weathering steel, providing enhanced atmospheric corrosion resistance by forming a stable protective rust layer.

Corner Castings: Drop-forged SCW480 steel, fully compliant with ISO 1161 specifications for stacking and lifting load transfer.

Floor Construction: 28 mm thick marine-grade apitong or gurjan hardwood plywood, treated with anti-fungal preservatives and secured to crossmembers with countersunk self-tapping steel screws.

Understructure: Cold-rolled steel crossmembers (C-channel profile, 4.0 mm thickness) welded to main longitudinal side rails.

Manufacturing & Quality Control
Welding Standards: Fully automated MIG/CO2 shielding arc welding executed by certified welders in accordance with AWS D1.1 / ISO 9606 standards. Seam-welded joints undergo 100% non-destructive testing (NDT) for leak-proof performance.

Surface Preparation & Coating System:
Shot Blasting: Sa 2.5 abrasive blast cleaning to eliminate mill scale and impurities.

Zinc-Rich Primer: 40 um dry film thickness (DFT) epoxy primer applied immediately post-blast.

Intermediate Coat: 80 um high-build epoxy coat.

Topcoat: 40 um chlorinated rubber or polyurethane finish coat (total dry film thickness >= 160 um).

Weather Sealing: EPDM rubber gaskets (triple-lip profile) secured around all door frames, compression-tested to prevent moisture ingress during high-pressure washing or ocean transit.

Application & Operational Fit

Primary Operational Scenarios
FIFO Inventory Management: Dual-end doors eliminate the need to unload an entire 40ft container to access items placed at the front. Material can be loaded from end A and unloaded from end B.

Oversized Pallet & Machinery Staging: The 9 ft 6 in internal height accommodates high industrial skids, taller electrical panels, and heavy manufacturing components that cannot clear standard 8 ft 6 in units.

Modular Industrial Enclosures: Used by engineering firms as protective shells for portable generator sets, water filtration skids, and remote instrumentation rooms, allowing pass-through cabling and ventilation ducts.

When NOT to Use This Product
High-Frequency Single-Side Loading Only: If site constraints restrict access to only one end of the container, the structural weight premium of dual-end door frames offers no operational advantage over standard high cube containers.

Weight-Sensitive Air/Road Combined Freight: The double door assembly adds approximately 200 kg of structural steel compared to a standard single-door high cube, marginally reducing payload capacity for strictly weight-governed transport corridors.

Supplier Verification & Manufacturing Standards

Regulatory Compliance & Certification
CSC Safety Approval: Every container is delivered with an active Convention for Safe Containers (CSC) safety approval plate, certified by classification societies (ABS, BV, LR, or DNV).

ISO Standards: Built in compliance with ISO 668 (Classification, dimensions, and ratings), ISO 1496-1 (Specification and testing), and ISO 830 (Terminology).

TIR Compliance: Customs Convention on the International Transport of Goods under Cover of TIR requirements met for cross-border transit security.

Factory Inspection & Factory Acceptance Testing (FAT)
Water Tightness Test: 100% of manufactured units undergo high-pressure nozzle testing (1.5 bar water jet directed at seams from a distance of 1.5 meters) prior to yard release.

Dimensional & Squareness Check: Diagonal tolerances verified to within +/- 3 mm to prevent door jam or stacking misalignment.

Procurement Decision & Ordering Guide

Fleet & Batch Ordering Options
Factory Direct Ex-Works (EXW): Available for direct terminal pickup or port consolidation in volume batches (minimum order quantity: 1 x 20ft container footprint shipping flat-racks, or bulk vessel delivery).
Custom Modifications Available:

Lock box installation (high-security shrouded padlock housing).
Forklift pockets integrated into the base frame.
Ventilation louvers or forced-air extraction ports.
Electrical wiring harness integration (110V-415V).

Delivery & Logistics Considerations
Lifting Requirements: Units must be handled using standard top-lift spreader bars, crane hooks via ISO corner castings, or heavy-duty industrial forklifts rated for over 7 tons with proper pocket spacing.

Site Preparation: Ensure level compacted gravel or concrete pad placement to prevent frame torsion, which can cause door misalignment during long-term static storage.

Request for Quote (RFQ) Form

To accelerate your inquiry, please provide the following technical parameters:

Quantity: [Number of units]

Delivery Destination: [Port of destination or site zip code]

Target Delivery Timeline: [Date / Quarter]

Required Modifications: [Standard stock / Custom lock box / Ventilation / Electrical]

Certification Requirements: [CSC Plate required / Domestic storage only]

FAQ

Q: Does a double door container have reduced structural stacking strength compared to a standard single-end door container?

A: No. While the removal of the solid rear wall in favor of a second door set requires additional engineering reinforcement, our structural framing utilizes thicker corner posts and reinforced header beams. The maximum allowable stacking weight remains identical to standard ISO high cube containers (capable of supporting up to 9 stacked units of max-gross-weight containers).

Q: What prevents water leakage around the two sets of door gaskets?

A: Each door leaf is fitted with a durable EPDM triple-lip rubber gasket. The door frames incorporate labyrinth-style water drainage channels that divert moisture away from the interior seal. Every unit passes a pressurized water-jet test during quality inspection before receiving its CSC certificate.

Q: Can these containers be lifted while fully loaded with industrial equipment?

A: Yes. When equipped with standard top-lift spreader gear or certified lifting slings attached to all four top corner castings, the container is engineered to be lifted at maximum gross weight (32,500 kg). Forklift pockets (if specified) are rated for empty or lightly loaded handling only and should not be used for lifting fully loaded units.

Q: What is the lead time for standard batch orders versus custom modifications?

A: Standard stock units loaded at factory yards typically ship within 7-14 business days upon payment confirmation. Custom modifications (such as electrical fit-outs, insulation, or custom paint specifications) generally require 21-30 business days depending on order volume.

Hot Tags: high cube double door storage container, China high cube double door storage container suppliers, factory