QINGDAO BOXWELL CONTAINER CO. IS THE OFFICAL MANUFACTURING PARTNER OF BOXWELL LLC.
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20'GP
BOXWELL
The 20'GP Soft Open Top Container replaces a conventional fixed roof with an open-top configuration covered by a removable heavy-duty PVC tarpaulin.
This design provides direct overhead access, allowing efficient vertical loading for cargo that cannot be loaded through standard end doors.
It is engineered specifically for heavy machinery, oversized items, and irregularly shaped equipment requiring top-loading via overhead cranes or lifting rigs.
The 20'GP format provides open-top loading flexibility within a compact 20-foot footprint.
It is ideal for shipments that require top-access handling but do not necessitate the large capacity of a 40-foot container.
Internal dimensions, roof opening clearances, and payload ratings are built to precision in accordance with approved technical drawings.
The container is built with a high-strength structural steel frame manufactured through precision CNC cutting and standardized welding processes.
The structural design provides rigid dimensional stability and safety during repeated cargo handling, stacking, and multimodal transportation.
A weather-resistant PVC tarpaulin secures the top opening after cargo placement.
The flexible cover with removable roof bows can be fully detached during crane loading operations and securely fastened with TIR cables once loading is complete, providing weather protection during transit.
The steel surface undergoes Sa2.5 abrasive blast cleaning prior to painting.
The protective marine coating system consists of:
● Zinc-rich epoxy primer
● Epoxy intermediate coat
● Acrylic top coat
Paint dry film thickness (DFT) and adhesion are strictly verified during quality control to protect the structure against outdoor weathering, salt spray, and harsh marine logistics environments.
This product is manufactured in full compliance with ISO 1496-1 requirements for Series 1 freight containers.
It undergoes rigorous structural and proof-load testing, backed by full certification documentation and official test reports for international road, rail, and maritime transport.
The 20'GP Soft Open Top Container is designed for cargo requiring overhead crane loading or items that cannot be loaded through standard dry container end doors.
Industrial and construction equipment can be hoisted directly into the container from above, eliminating the difficulties and hazards of sliding heavy units through end doors.
The open top accommodates bulky, tall, or irregularly shaped components.
Typical cargo applications include:
● Industrial machinery
● Large mechanical components
● Structural components
● Project cargo
● Other bulky equipment
Ideal for long or awkward prefabricated construction materials, steel trusses, pipes, and beams that require overhead crane handling.
Top access allows loading plans to be engineered around the dimensions and lifting points of the cargo, streamlining job-site loading and unloading where cranes are deployed.
Our open-top containers integrate seamlessly into global multimodal logistics networks, fully compatible with container ships, rail cars, and road chassis under international ISO interchange standards.
Specification | Details |
Product Name | 20'GP Soft Open Top Container with PVC Tarpaulin |
Model | 20'GP |
Brand | BOXWELL |
Container Type | Soft Open Top ISO Shipping Container |
Roof Type | Soft Open Top |
Roof Cover | PVC Tarpaulin |
Applicable Standard | ISO 1496-1 |
Surface Preparation | Sa2.5 Abrasive Blasting |
Primer | Zinc-Rich Epoxy Primer |
Intermediate Coat | Epoxy Intermediate Coat |
Top Coat | Acrylic Top Coat |
Certification | CSC Certificate, subject to order requirements |
Depending on project requirements, the following documentation can be provided:
CSC Certificate
Every ISO open-top container passes through a complete manufacturing process under strict quality control.
Qingdao Boxwell Container Co., Ltd. was established in May 2020 in Jiaozhou, Qingdao.
Our manufacturing facility covers approximately 60,000 m², including 32,000 m² of modern workshop space, operated by more than 200 skilled workers.
The facility supports the manufacturing of ISO freight containers, special open-top/side-access units, storage containers, and custom modular solutions.
Our core engineering and R&D team brings over 20 years of specialized industry experience across special ISO containers, offshore units, and customized structural solutions.
Our advanced manufacturing lines include:
● Steel uncoiling equipment
● Surface preparation equipment
● Laser cutting machines
● Automatic welding equipment
● Independent painting facilities
These resources ensure end-to-end quality control across all cutting, fabrication, assembly, and coating stages.
We provide full technical support for build-to-print production and customized engineering designs. Our engineering team collaborates with clients from initial concept review and structural analysis through to final fabrication and testing.
We operate a dedicated in-house ISO/CSC container testing room with professional testing equipment, providing valid CSC certificates and comprehensive proof-load reports.
Our integrated service offerings include:
● Production monitoring
● Quality control
● Third-party inspection support
● Logistics and shipment coordination
● After-sales technical support
Located approximately 20 km from Qingdao Port, our primary export terminal, we provide rapid logistics turnaround and efficient container dispatch worldwide. Delivery via other designated ports can also be arranged.
It is a 20-foot general-purpose ISO shipping container built without a fixed steel roof, utilizing removable roof bows and a heavy-duty PVC tarpaulin to allow direct overhead loading.
The main advantage is overhead vertical loading capability. Overhead cranes and hoisting gear can easily lower dense, heavy, or oversized items directly into the container from above.
The primary difference is length and cargo volume. The 20'GP model provides a compact 20-foot footprint for dense cargo, while the 40'GP model provides double the floor length for longer or higher-volume project shipments.
The models differ in both length and height. The 20'GP is a standard-height (8'6") 20-foot container, whereas the 40'HC is a 40-foot high-cube (9'6") unit providing both extended length and increased vertical clearance.
Typical cargo includes:
● Heavy machinery
● Industrial equipment
● Large mechanical components
● Structural components
● Oversized cargo
● Irregularly shaped project cargo
Yes. Removing the tarpaulin and roof bows allows cranes, winches, or gantry systems to position cargo directly onto the container floor.
Yes. Open-top containers can accommodate cargo that exceeds the standard roof height (Out of Gauge / OOG), subject to carrier stowage approvals, proper lashing, and route transport regulations.
Yes. The heavy-duty PVC tarpaulin with TIR securing cables forms a weather-tight barrier against rain, wind, and marine spray during transport.
The surface treatment comprises Sa2.5 abrasive blasting followed by a three-coat protective marine paint system:
● Zinc-rich epoxy primer
● Epoxy intermediate coat
● Acrylic top coat
Film thickness (DFT) and adhesion are strictly verified to ensure long-term corrosion resistance.
No. We apply a verified high-performance three-coat marine system consisting of a zinc-rich epoxy primer, epoxy intermediate barrier coat, and an acrylic polyurethane top coat.
The container is designed and tested in strict accordance with ISO 1496-1 standards for Series 1 freight containers.
Yes. Every container is supplied with a valid CSC Certificate and safety approval plate for international maritime transport.
Yes. Classification society certificates from Lloyd's Register (LR), ABS, BV, CCS, or DNV can be provided based on project requirements.
No. This unit is an ISO shipping container designed for multimodal freight. For offshore energy and marine platform operations, we manufacture dedicated DNV-ST-E271 / EN 12079 certified offshore CCUs.
No. Standard ISO open-top containers comply with ISO 1496-1 and CSC. DNV-ST-E271 / EN 12079 certifications apply exclusively to our offshore container product line.
Standard ISO containers undergo ISO 1496-1 structural and proof-load testing. Specialized non-destructive testing (NDT) and offshore dynamic lifting tests are performed specifically for offshore CCU orders upon request.
Exact tare weight, payload capacity, and interior/roof opening clearances vary slightly depending on custom customer options (such as heavy-duty floor ratings or tarpaulin specifications). Final verified parameters are provided on the approved engineering drawing and CSC plate for each order.
To receive an accurate quotation and engineering review, please provide:
● Cargo type
● Cargo dimensions
● Cargo weight
● Loading method
● Whether vertical crane loading is required
● Whether the cargo extends above the normal container profile
● Required certification
● Quantity
● Destination
● Any special configuration requirements
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.
