Breech Round Base Type Container Dovetail Twist Lock
— Heavy Duty ISO Shipping Container Locking Device for Sale —
Product Overview
Container twistlocks are heavy-duty locking devices used to secure shipping containers on vessels, trailers, railcars, or storage yards. Our twistlock breech round base and other container twist lock types are manufactured according to ISO standards, ensuring reliable cargo securing during sea, rail, or road transport.
Locking Direction & Operation Angle
- Right Closing: Rotating the handle to the right-hand side locks the twistlock. This option is ideal when installation space or workflow favors right-side operation.
- Left Closing: Rotating the handle to the left-hand side locks the twistlock. It is suitable for layouts where the left side is more accessible.
- 45° Operating Angle: Both locking directions use a 45-degree rotation for locking and unlocking, ensuring fast operation and reduced clearance requirements.
- Flexible Supply Options: We provide right-closing and left-closing twistlocks so customers can select the configuration that best fits their equipment and working conditions.
OLIPORTS high-quality shipping container twist locks meet international standards and undergo rigorous testing to guarantee optimal performance even in the harshest environments. Whether you’re looking for standard models or heavy-duty solutions, we provide reliable container locking devices for all your cargo transportation needs.
Technical Specification of Container Dovetail Twistlock

- Model: BD-D2
- Weight: 5.5KG
- Compression: 2000 kN (Min)
- B.L. Shear: 420 kN (Min)
- B.L. Tension: 500 kN (Min)
- Safe Working Shear: 210KN
- Safe Working Tension: 250KN
- Material: Heat Treatable Steel
- Finish: Hot Dip Galvanized
- Class Approval: ABS, DNV-GL, CCS, Others
- Category: Loose Fittings on Deck
- Tags: Twist Lock; Container twistlock; ISO container twist locks; Lashing Equipment; Dovetail Twistlocks
* Can be customized according to your needs, type and test class approved on request.
Looking for a large seat twistlock or other shipping container twist lock for sale? Contact us today for a detailed quotation and technical datasheet.
Drawings and Features of Round Base Dovetail Twistlock BD-D2

Key Features
Note: No additional space around the foundation required. Left and right locking available. Do not mix left and right locking types in a vessel to avoid confusion as to if open or locked.
- ISO Certified: Compatible with all standard ISO container corner castings.
- Multiple Types: Breech round base, semi-automatic twistlocks, manual twistlocks, and bridge fittings.
- Flexible Locking Directions: Available in right-closing and left-closing handle orientations to fit different installation layouts and operator preferences.
- Surface Treatment: Hot dip galvanization for corrosion resistance, extending service life in marine environments
- Weldable & Class Approved: Meets ABS, DNV-GL, CCS, and ISO standards
Application
Container twist locks are versatile devices used across various segments of the transportation industry:
- Maritime Transport: Securing containers on ship decks and in cargo holds
- Road Transport: Locking containers onto truck chassis and flatbed trailers
- Rail Transport: Ensuring container stability on railway flatcars
- Intermodal Terminals: Facilitating efficient container transfers between different transport modes
- Warehousing: Providing secure stacking solutions in storage facilities
With its high tensile strength, corrosion-resistant finish, and standardized connection design, this part is trusted by global shipping lines, shipyards, port operators, and marine service providers. By choosing OLIPORTS as your supplier, you ensure reliable performance, compliance with ISO & class society standards, and consistent availability for both scheduled maintenance and large-scale fleet projects.
Recommended Accessories
Our Twistlock Breech Round Base is designed to integrate seamlessly with various container securing components, ensuring reliable locking and enhanced operational efficiency:
- ISO Corner Castings – The primary interface for twistlocks, ensuring a secure connection between containers or between a container and a trailer/ship deck.
- Manual & Semi-Automatic Twistlocks: Can be paired with breech round bases to provide flexible locking options for different loading operations.
- Bridge Fittings (Container Connectors): Used together with breech round bases to stabilize adjacent containers during stacking or deck operations.
- Deck Sockets / Foundation Plates: Serve as fixed mounting points on trailers, railcars, or vessels to hold the breech round base and twistlock in position.
- Stacking Cones & Guide Fittings: Work alongside twistlocks to guide container placement and prevent movement during stacking.
- Lashing Eyes or D-Rings: For combined use on trailers or decks, offering additional lashing points to further secure cargo
Why OLIPORTS?
At OLIPORTS, we manufacture container securing components with unmatched engineering precision and industry know-how.
With over a decade of manufacturing and global distribution experience, OLIPORTS has developed deep expertise in container lashing and cargo securing systems. We fully understand the design drawings, structural layouts, and mechanical calculations behind every container ship’s securing solution — allowing us to respond quickly and accurately to your technical requirements.
- Deep understanding of ship drawings and classification standards
- Over 10 years of global lashing system supply experience
- Support for custom layouts to match your vessel and route
- Certified by CCS, ABS, DNV-GL, and compliant with ISO 3874 / ISO 1161
- Fast quote turnaround and fewer sample revisions
- Trusted by yards, shipowners, and retrofit contractors worldwide
Built to perform. Certified to last. Delivered on time. Our in-house design and fabrication capabilities ensure fast delivery, high compatibility, and long-term durability.
Request a Quote or Drawing
OLIPORTS offer: Technical Datasheet PDF、Material Certificates、DWG or STEP files for design integration、On-request layout support. Our lashing experts typically reply within 24 hours. 💡 Based on your port design, berthing energy, and vessel data, we’ll provide:
⚙️ Recommended drawings & specifications
💬 A tailored quotation with best lead time
📎 Support for class approval documents
Contact Us
We’re here to assist you with any inquiries. One of our product specialists will get back to you within 24 hours with the information you need.



