QINGDAO BOXWELL CONTAINER CO. IS THE OFFICAL MANUFACTURING PARTNER OF BOXWELL LLC.
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20'GP
BOXWELL
The 20'GP ISO Dry Cargo Shipping Container is a standard-height 20-foot enclosed freight container designed for general dry cargo transportation.
Designated as model 20'GP (ISO size/type code 22G1), this container combines a compact 20-foot footprint with substantial payload capacity, making it ideal for dense freight and space-constrained transport operations.
Standard engineering specifications include:
● Maximum Gross Weight: 30,480 kg / 67,200 lb
● Tare Weight: 2,200 kg / 4,850 lb
● Maximum Payload: 28,280 kg / 62,350 lb
● Cubic Capacity: 33.2 m³ / 1,173 cu.ft.
These ratings reflect our verified heavy-duty structural design for safe, reliable freight operations. Final cargo loading complies with the approved markings and certification documents provided with each unit.
Compared with larger 40-foot containers, a standard 20-foot dry container optimizes space efficiency while delivering an exceptional cargo weight-to-volume ratio.
This makes the 20'GP format especially practical for high-density commodities, heavy machinery parts, and shipments where cargo weight is the primary factor rather than cubic volume.
The container is built with a standard weather-tight enclosed design:
● Fixed steel roof
● Corrugated steel side walls
● Steel end structure
● Double rear cargo doors
● Enclosed cargo compartment
This rugged construction delivers complete cargo protection for non-temperature-controlled freight during international transport and outdoor storage.
The container is manufactured using precision CNC cutting and standardized automated welding processes to maintain high structural stability and dimensional consistency.
The frame, corrugated panels, corner castings, roof, and door assemblies are fully engineered and fabricated to approved dry cargo container standards.
Before painting, the entire steel structure undergoes Sa2.5 abrasive blast cleaning to remove scale and impurities.
The protective marine coating system consists of:
● Zinc-rich epoxy primer
● Epoxy intermediate coat
● Acrylic top coat
Coating dry film thickness (DFT) and adhesion are strictly tested during quality control to ensure superior long-term corrosion resistance in harsh marine and port environments.
This 20'GP container is engineered in full compliance with ISO 1496-1 requirements.
Each unit undergoes strict structural and proof-load testing, backed by complete classification documents, CSC plating, and official test reports.
The 20'GP ISO Dry Cargo Shipping Container is engineered for general dry cargo transportation across compatible road, rail, and maritime logistics systems.
The enclosed cargo compartment can accommodate a wide range of non-temperature-controlled goods, including:
● Cartoned products
● Palletized goods
● Packaged industrial products
● Consumer goods
● General manufactured products
● Other suitable dry freight
All cargo should be loaded and secured in accordance with approved container payload and safety limits.
With a maximum payload capacity of 28,280 kg within a 33.2 m³ volume, this 20-foot container is the optimal choice for high-density goods such as metals, minerals, machinery components, and heavy packaged commodities.
The standardized internal dimensions allow straightforward pallet loading and securing through the wide-opening double rear doors. Loading plans should consider:
● Pallet dimensions
● Total cargo weight
● Floor loading
● Weight distribution
● Cargo securing requirements
Machinery assemblies, industrial equipment, and manufactured components fit securely within the container's structural limits, providing an economical alternative when shipment volumes do not require a 40-foot unit.
Our ISO dry containers integrate seamlessly into global multimodal logistics networks, fully compatible with standard container ships, port handling cranes, railway flatcars, and highway chassis.
Specification | Details |
Product Name | 20'GP ISO Dry Cargo Shipping Container |
Model | 20'GP |
Brand | BOXWELL |
Container Type | Standard Dry Cargo Shipping Container |
ISO Size / Type Code | 22G1 |
Nominal Size | 20' × 8' × 8'6" |
Maximum Gross Weight | 30,480 kg / 67,200 lb |
Tare Weight | 2,200 kg / 4,850 lb |
Maximum Payload | 28,280 kg / 62,350 lb |
Cubic Capacity | 33.2 m³ / 1,173 cu.ft. |
Applicable Standard | ISO 1496-1 |
Surface Preparation | Sa2.5 Abrasive Blast Cleaning |
Primer | Zinc-Rich Epoxy Primer |
Intermediate Coat | Epoxy Intermediate Coat |
Top Coat | Acrylic Top Coat |
Certification | CSC Certificate, depending on project requirements |
Depending on project requirements, the following documentation can be provided:
CSC Certificate
Every ISO container passes through a complete manufacturing process under strict quality control.
Qingdao Boxwell Container Co., Ltd. was founded in May 2020 in Jiaozhou, Qingdao.
Our manufacturing facility covers approximately 60,000 m², including 32,000 m² of modern workshop space, with more than 200 skilled workers.
This infrastructure supports high-volume manufacturing of standard ISO containers, custom equipment enclosures, and specialized containerized solutions.
Our core engineering and R&D team brings more than 20 years of technical expertise in offshore containers, specialized ISO containers, and customized modular equipment.
Our production lines are fully equipped with:
● Steel uncoiling machines
● Surface preparation equipment
● Laser cutting machines
● Automatic welding machines
● Independent painting rooms
These facilities enable total in-house quality control across every stage of processing, fabrication, and surface treatment.
We operate a rigorous quality management system encompassing:
● Raw material inspection
● Production process monitoring
● Final product testing
● Testing equipment for performance verification
We provide full CSC certification support and operate an in-house ISO/CSC container testing station to perform standard structural, racking, and proof-load testing.
Our comprehensive service package includes:
● Pre-sales technical consultation
● Engineering and solution design
● Production monitoring and quality control
● Third-party inspection support
● Logistics and shipment coordination
● After-sales technical support
Located approximately 20 km from Qingdao Port, our primary shipping terminal, we provide rapid dispatch and efficient global logistics coordination. Shipment through other designated ports can also be arranged.
It is a standard-height 20-foot enclosed freight container designed for general dry cargo transportation, corresponding to the standard ISO size/type code 22G1.
Standard parameters for this model are:
● Maximum Gross Weight: 30,480 kg
● Tare Weight: 2,200 kg
● Maximum Payload: 28,280 kg
● Cubic Capacity: 33.2 m³ / 1,173 cu.ft.
A 20'GP is a standard-height container measuring 8'6" (2,591 mm) in height (ISO code 22G1), whereas a 20'HC (high cube) container measures 9'6" (2,896 mm) in height to offer extra internal vertical volume.
The container is designed for general dry freight, including cartoned goods, palletized cargo, machinery parts, consumer products, and dense industrial goods requiring weather-tight enclosed transport.
This product is manufactured to ISO 1496-1 standards and is supplied with a CSC Certificate for international maritime freight. Additional classification society certificates and third-party inspection reports can be provided upon request.
The container undergoes Sa2.5 shot blasting followed by a high-performance marine coating system:
● Zinc-rich epoxy primer
● Epoxy intermediate coat
● Acrylic top coat
Coating thickness and adhesion are strictly verified to ensure long-term corrosion protection.
No. This unit is an ISO shipping container designed for multimodal global freight. For offshore oil and gas operations requiring DNV-ST-E271 or EN 12079 certification, we supply dedicated offshore CCU containers.
To receive an accurate quotation and technical proposal, please provide:
● Required quantity
● Cargo type
● Expected cargo weight
● Required certification
● Exterior color and markings
● Intended transportation route
● Destination
● Any special configuration requirements
We also provide customized design and build-to-print manufacturing based on customer specifications.
Looking for a reliable container manufacturer?
Our engineering team is ready to provide customized solutions, technical support, and competitive quotations for your next offshore project.
Contact Boxwell today to request a quotation.
