What is a BR (Bottom Right) Corner Casting?

What is the basic purpose of the BR corner casting in shipping containers?

The BR (Bottom Right) corner casting is a highly standardized, robust cast steel component that is welded into the bottom right corner of every ISO shipping container. It is a three-dimensional, precision-manufactured element made of cast steel, forming a critical structural part of the container. The BR corner casting is the mirror image of the BL (Bottom Left) corner casting and belongs to a set of eight corner castings used on every ISO container – two top left (TL), two top right (TR), two bottom left (BL), and two bottom right (BR).

The BR corner casting serves as a universal connection point that enables containers to be handled by cranes, safely stacked on top of each other, and securely fastened to various types of transport vehicles – ships, trains, and trucks. Without these critical components, modern global logistics in its current form would not be possible. Corner castings form the backbone of the worldwide intermodal transport system and are responsible for transferring enormous forces during handling and transport.

The standardization of the BR corner casting is not accidental – it is the result of the strict international standard ISO 1161:2016, which defines every essential aspect of its design and functionality. This standard ensures that every BR corner casting manufactured anywhere in the world is compatible with all handling equipment, spreaders, twist locks, and other components used in international shipping.

What are the exact technical dimensions and weight of the BR corner casting?

Standard external dimensions and geometry

The BR corner casting has strictly defined external dimensions according to ISO 1161:2016. The length of the casting is 178 millimeters, the width reaches 162 millimeters, and the height is 118 millimeters. These dimensions are absolutely critical for ensuring global compatibility – tolerances are in the order of single millimeters (typically ±1.5 mm), so that all twist locks, spreaders, and handling equipment can safely grip every container in the world regardless of where it was manufactured.

The weight of a single BR corner casting ranges between 10.5 and 12 kilograms, depending on the specific material specification and manufacturer. A set of eight corner castings (a complete set for one container) weighs approximately 85 to 90 kilograms. This relatively high weight is a result of using heavy cast steel, which is necessary for transferring enormous forces during handling and stacking. The wall thickness of the BR corner casting is a minimum of 19 millimeters (3/4 inch), which ensures sufficient strength for load transfer.

Geometry and aperture placement

Each BR corner casting has three functional apertures located on different faces – on the side, on the front, and on the bottom. The main aperture is the so-called twist lock hole, which has an oval shape with a diameter of approximately 65 millimeters. This aperture is used to insert the twist lock, which securely fastens the container to the transport vehicle or to another container.

The remaining two apertures are smaller, and their exact placement and shape vary depending on the position of the corner casting. For bottom corners (BL and BR), these apertures are of the so-called “stadium” shape (oval shape) and are used to connect various handling equipment. The precise geometry and position of all apertures are defined by ISO 1161 with a tolerance of ±1.5 millimeters, ensuring that all components fit exactly and securely.

The edges of the apertures are rounded with a radius of 0–3 mm (–1.5 mm tolerance) on the outer edges and 14.5 mm on the edges connecting two faces. This rounding is important from a safety perspective – it prevents sharp edges that could damage handling equipment or cause injury.

Distinguishing between corner casting types

The BR corner casting differs from other types (TL, TR, BL) in the orientation and shape of the apertures. While the top corner castings (TL and TR) have a large aperture on the top face intended for crane lifting, the bottom corner castings (BL and BR) have a large aperture on the bottom face intended for stacking. Each corner casting bears a marking on the inside (BR in this case), which is visible through the aperture and serves for identification during manufacturing and repairs.

Bottom corner castings (BL and BR) are designed to transfer the weight of stacked containers. Their apertures are geometrically optimized for transferring vertical forces, while top corner castings are optimized for lifting and horizontal handling.

What material is used to manufacture the BR corner casting?

Why cast steel is the best choice

BR corner castings are manufactured exclusively from high-strength cast steel, which is specially designed for extreme transport conditions. The most commonly used steels are CORTEN, CNS-SCW49, or S-SCW480 – special alloys designed for low temperatures and high impact resistance. Cast steel is the only practical choice for this application, as it provides an ideal combination of properties:

• High ductility and compressive strength – each corner casting must transfer forces in the range of tens of tons without deformation
• Excellent toughness – essential for impact resistance during loading and transport
• Weldability – the corner casting is permanently joined to the container frame by welding
• Wear resistance – the apertures must withstand thousands of twist lock cycles
• Corrosion resistance – CORTEN steel is often used, which forms a protective patina
• Thermal resistance – retains its properties in extreme cold and tropical temperatures (–40 °C to +60 °C)

Mechanical properties and strength standards

According to ISO 1161:2016, the cast steel used for corner castings must meet strict mechanical properties:

These properties are minimum requirements. Certification bodies (Lloyd’s Register, Bureau Veritas, ABS, etc.) may approve higher values, but never lower. The steel must undergo heat treatment (normalization at 910 °C) to achieve the optimal combination of strength and toughness.

Material comparison: Steel vs. Aluminum vs. Cast Iron

Although it would theoretically be possible to manufacture corner castings from other materials, steel is clearly the preferred choice in the industry. A comparison with alternative materials clearly shows why:

From a safety and standardization perspective, steel is unequivocally the preferred choice, as confirmed by ISO 1161. Aluminum would reduce container weight, but its lower strength would require larger dimensions and higher costs. Cast iron would be cheaper, but its lower toughness would create safety risks during handling.

Manufacturing process and quality control

The manufacture of a BR corner casting begins with casting molten steel into a precise mold (typically a sand or ceramic mold). After cooling, heat treatment (normalization) at 910 °C follows, which ensures optimal mechanical properties. This is followed by precision machining of functional surfaces and apertures on CNC machines with a tolerance of ±1.5 millimeters.

Each casting is then marked with the type (BR), batch number, and often the manufacturer’s logo. Quality control is a critical part of the process. Manufacturers must perform dimensional inspections, mechanical tests (tensile, compressive, impact tests), crack detection (e.g., ultrasonic inspection), and document all results. Certification according to ISO 1161 requires a third party (Lloyd’s Register, Bureau Veritas, ABS, etc.) to verify that the corner casting meets all requirements.

What are the four types of corner castings and how do they differ?

Top Left corner casting (TL – Top Left)

The TL corner casting is placed in the top left corner of the container. Its characteristic feature is a large aperture on the top face, which is used for lifting the container by crane. On the side it has an oval aperture (stadium hole) with dimensions of approximately 65 × 50 mm, and on the front it has a characteristic shield aperture (shield hole) with dimensions of approximately 65 × 45 mm. These apertures are used to connect handling equipment and twist locks.

Technical specifications of the top left corner casting

The aperture on the top face is used for lifting and has a diameter of approximately 90 millimeters. The side oval aperture is designed for connecting a spreader bar and other handling equipment. The shield aperture on the front face is characterized by a specific shape that prevents equipment from slipping.

Top Right corner casting (TR – Top Right)

The TR corner casting is the mirror image of TL and is placed in the top right corner of the container. It has the same functional apertures as TL, but their orientation is reversed. Like TL, it has a large aperture on the top face for lifting with a diameter of approximately 90 mm.

Characteristics of the top right corner casting

The mirror symmetry of TR relative to TL ensures that the container can be lifted symmetrically from both sides. Both top corner castings must have exactly the same mechanical properties and dimensions so that the load is distributed evenly.

Bottom Left corner casting (BL – Bottom Left)

The BL corner casting is placed in the bottom left corner of the container. Compared to the top corners, it has a large aperture on the bottom face, which is used for stacking containers on top of each other. It has two oval apertures (stadium holes) on the side and front face, which are used to connect twist locks and handling equipment. These apertures have approximately the same dimensions as those of the top corners.

Function of the bottom left corner casting

The aperture on the bottom face of BL is used to transfer the weight of all containers stacked above. It is designed to fit precisely onto the top corners of the lower container. The side oval apertures are used to connect twist locks that secure the container to the chassis.

Bottom Right corner casting (BR – Bottom Right)

The BR corner casting is the mirror image of BL and is placed in the bottom right corner of the container. Like BL, it has a large aperture on the bottom face for stacking. Two oval apertures are located on the side and front face, but their orientation is reversed relative to BL. Each container contains exactly two BR pieces. The BR apertures are designed to fit precisely to twist locks and other handling equipment used in intermodal transport.

Specifics of the bottom right corner casting

BR is the mirror image of BL, meaning the left and right apertures are in opposite orientation. This asymmetry is important for the correct functioning of handling equipment and twist locks. The aperture on the bottom face of BR has approximately the same diameter as BL (approximately 90 mm) and is used for weight transfer.

What are the main functions of the BR corner casting in practice?

Lifting and handling containers

The BR corner casting plays a critical role in lifting containers. All containers are lifted exclusively via corner castings – they are never lifted by the walls or roof. Cranes use a special spreader bar, which connects to the corners of the container via twist locks inserted into the apertures of the top corners. For bottom corners, various handling equipment is used – hooks, adapters, or grabs that connect into the BR apertures.

The precise geometry of the BR apertures ensures that all handling equipment can safely grip the container regardless of its origin. This standardization is absolutely critical for safety – any slipping or improper attachment could lead to a container falling with catastrophic consequences. ISO 1161 specifies that top corner castings must withstand loads of up to 195 kN (approximately 20 tons) during lifting.

Practical lifting examples

Modern container terminals handle hundreds of containers daily using gantry cranes (STS cranes), which connect to the corners of the container. The spreader bar aligns precisely with the top corners and twist locks are inserted into the apertures. The precise geometry of the corners ensures that the container is lifted evenly without tilting.

Stacking containers

One of the most important functions of the BR corner casting is to enable safe stacking of containers. The large aperture on the bottom face of BR is used to transfer the weight of all containers stacked above. During stacking, all forces are transferred exclusively through the corner castings and vertical columns – never through the walls or roof of the container.

A single BR corner casting is capable of bearing a load of up to 86 tons without deformation (during stacking), while the entire container can be loaded with up to 250 tons. ISO 1161 specifies that bottom corner castings must withstand loads of up to 1,200 kN (approximately 122 tons) when stacking on a flat surface. The precise geometry and high material strength allow containers to be stacked up to nine containers high on ships and up to ten containers high on land. Without this capability, modern container logistics would not be economically viable.

During stacking, the bottom BR corner castings of the upper container rest directly on the top corner castings of the lower container. This precise geometry ensures that the load is distributed evenly and no deformation occurs. Any deviation in dimensions could lead to uneven load distribution and failure.

Maximum stacking heights

On modern container ships, containers are stacked to a height of nine layers (9 TEU vertically). This means that the bottom container bears the weight of up to 8 additional containers plus its own tare weight. At full load, this represents forces exceeding 1,000 kN on a single corner casting. Without precise standardization, this would be impossible.

Securing and fastening the container

The BR corner casting also serves as a connection point for securing the container during transport. On a ship, containers are secured via twist locks and bridge fittings, which connect into the corner apertures. On a truck or railway wagon, the container is secured by twist locks inserted into the apertures of the bottom corners.

These fastenings are critical for safety – without them, the container could move during transport and become damaged or damage its surroundings. Twist locks inserted into BR rotate and thereby firmly secure the container in place. The system is designed to withstand extreme conditions – rough seas, sudden acceleration and braking, vibrations. ISO 1161 specifies that bottom corner castings must withstand loads of up to 390 kN when secured at an angle of 30° to the horizontal.

Twist lock mechanism

The twist lock is inserted into the oval aperture of BR and rotates around its axis. This rotation creates a permanent connection that prevents container movement. Modern twist locks have safety mechanisms that prevent spontaneous opening during transport.

Intermodal transport

The BR corner casting is a key element that enables intermodal transport – the transport of the same container by ship, train, and truck without opening and reloading the contents. A container can be loaded at a factory on one continent, transported by ship across the ocean, then by train across a continent, and finally by truck to the destination – all without the contents of the container being touched.

This capability is only possible thanks to the standardization of corner castings. Every piece of handling equipment – ship crane, rail handler, road spreader – is designed to work with standardized corner castings. Without this standardization, intermodal transport would be practically impossible.

How does the BR corner casting interact with other container components?

Twist lock and its relationship to BR

A twist lock is a small mechanical device that is inserted into the apertures of the BR corner casting and securely fastens the container. The twist lock rotates around its axis, thereby creating a permanent connection between the container and the transport vehicle. The BR apertures must have very precise dimensions so that the twist lock fits perfectly – too loose and it would slip, too tight and it could not be inserted.

Twist locks are equipped with safety mechanisms that prevent spontaneous opening during transport. Modern twist locks are also equipped with indicators that show whether the container is properly secured. The number of twist lock cycles (insertion and removal) during the container’s lifetime is measured in thousands – the BR apertures must be sufficiently durable to withstand this wear without enlargement or deformation.

Twist lock compatibility

Twist locks are standardized according to ISO 1161 and must be compatible with all corner castings in the world. There are various types of twist locks (mechanical, hydraulic, pneumatic), but all are inserted into the same BR apertures.

Bridge fittings and horizontal joining

Bridge fittings are devices that horizontally connect two adjacent containers together. They connect into the corner apertures and create a rigid structure that increases stability and safety. Without bridge fittings, containers could move relative to each other during transport and cause damage.

Bridge fittings are particularly important on ships, where containers are stacked in rows side by side. They create a rigid network that resists lateral forces and vibrations during maritime transport. The BR corner casting must have sufficiently strong apertures and material to withstand the forces generated by bridge fittings. Typically, bridge fittings connect into the side apertures of BR using special connectors.

Function of bridge fittings

Bridge fittings create a horizontal connection between two adjacent containers. They prevent containers from moving relative to each other and increase the rigidity of the entire structure. On a typical container ship, hundreds of bridge fittings are used.

Spreader bar and lifting equipment

A spreader bar is a long structure that a crane uses to lift a container. It connects to the apertures of the top corners of the container via twist locks and evenly distributes the container’s weight across four corners. Without a spreader bar, the weight would concentrate at one point and could cause failure.

Spreader bars are designed to work with standardized corner castings. The distance between the connection points on the spreader bar corresponds exactly to the distance between the corners of the container. Any deviations in corner dimensions could lead to improper attachment and a safety risk.

Types of spreader bars

There are various types of spreader bars – fixed, telescopic, rotating. All connect to the corners of the container in the same way – via twist locks inserted into the top corners.

Cargo trolleys and handling equipment

Empty containers are often handled using special trolleys or handlers that connect into the BR apertures. These devices must be designed to safely transfer the weight of an empty container (approximately 2–3 tons) without damaging the apertures.

What are the standards and certifications for the BR corner casting?

ISO 1161:2016 – International standard

The standard ISO 1161:2016 with the subtitle “Series 1 freight containers — Corner and intermediate fittings — Specifications” is the fundamental international standard for corner castings. This standard defines every essential aspect of the design, dimensions, and mechanical properties of the BR corner casting:

• Dimensional requirements – precise external dimensions (178 × 162 × 118 mm), dimensions and position of apertures, permitted tolerances (typically ±1.5 mm)
• Functional requirements – ability to safely cooperate with standard handling equipment (cranes, spreaders, twist locks)
• Strength requirements – minimum tensile, compressive, and shear strength, impact resistance
• Material requirements – cast steel with precisely defined characteristics (tensile strength 480 MPa, yield strength 275 MPa)
• Testing and inspection procedures – manufacturers must perform destructive and non-destructive tests, dimensional inspections, and maintain batch records

Compliance with ISO 1161 is mandatory for all containers intended for international transport. The standard is also closely linked to other key ISO standards:

• ISO 668 – Classification and container dimensions
• ISO 1496 – Testing procedures and safety requirements
• ISO 6346 – Container identification and marking
• ISO 3874 – Lifting and securing methods

Historical development of ISO 1161

ISO 1161 was first introduced in 1980 and has been updated several times since. The latest version (2016) includes new requirements for mechanical properties and testing procedures. The standard was developed based on experience from worldwide intermodal transport and reflects the latest findings on safety and reliability.

Third parties and certification bodies

For a manufacturer to declare that their BR corner casting complies with ISO 1161, it must undergo third-party certification. The main certification bodies for maritime containers are:

• Lloyd’s Register (LR) – British classification society
• Bureau Veritas (BV) – French classification society
• American Bureau of Shipping (ABS) – American classification society
• Det Norske Veritas (DNV) – Norwegian classification society
• China Classification Society (CCS) – Chinese classification society

These bodies carry out strict inspections of the manufacturing process, test samples of corner castings, and verify that all properties meet the standard. Certification is usually indicated by a stamp or label on the casting itself. Certification bodies also conduct regular audits of manufacturing facilities and testing procedures.

Certification process

The certification process includes:

1. Preliminary audit of the manufacturing facility
2. Testing of corner casting samples
3. Verification of mechanical properties
4. Inspection of dimensions and tolerances
5. Issuance of the certificate

3.2 Certificates and documentation

Corner castings are often supplied with a 3.2 certificate, which is a class certificate confirming compliance with ISO 1161. The certificate contains data on the material, mechanical properties, and test results. This documentation is important for ensuring that spare parts meet the original specifications.

The 3.2 certificate includes:

• Chemical composition of the material
• Results of tensile tests
• Results of impact tests
• Dimensional inspections
• Manufacturer and batch identification

How is the BR corner casting installed, repaired, and maintained?

Installation of the BR corner casting on a new container

Installing the BR corner casting on a new container is a precise process. First, the corner casting is accurately positioned in the correct position on the container frame. The placement must be absolutely precise – deviations in the order of millimeters could lead to compatibility issues. The corner casting is then welded to the frame using high-quality welding.

Welding is a critical operation – weak welds could fail under load, which would have catastrophic consequences. Welds must be performed by experienced welders and must meet strict standards. Low-hydrogen electrodes (e.g., E7016/E7018) are used, which ensure the quality and durability of the welds. After welding, the welds are inspected – visually, by ultrasound, and sometimes by magnetic particle inspection.

Finally, the corner casting is tested. Dimensional inspections, mechanical tests, and weld integrity checks are performed. Only after successfully passing all tests is the container approved for operation.

Installation precision

Installation must be performed with a precision of ±1.5 mm to ensure compatibility with all handling equipment. Any greater deviation could lead to problems during use.

Identifying damaged corner castings

During routine maintenance, it is important to know when it is time to replace the BR corner casting. Signs that it is time for replacement include:

• Visible cracks – especially in the welds connecting the casting to the frame. The IICL/BIC standard has ZERO tolerance for cracks.
• Aperture deformation – apertures may become more oval instead of remaining round, preventing safe twist lock engagement. Maximum permitted deformation is 5 mm.
• Aperture enlargement – apertures may be enlarged to a maximum dimension of 66 mm (laterally) or 127 mm (in length). Exceeding these limits requires immediate replacement.
• Deep corrosion – which reduces structural integrity
• Wear – after thousands of twist lock cycles, apertures may enlarge and weaken

Inspection is usually carried out during regular container inspection. Experienced inspectors can identify problems that are not immediately visible. The IICL (International Institute of Container Lessors) and BIC (Bureau International des Containers) standards set strict criteria for the acceptability of corner castings.

Inspection criteria

Inspection must be performed:

• After every 10 years of operation
• When purchasing or leasing a container
• If the container is damaged
• When transferring from one operator to another

Repair and replacement of the BR corner casting

If the BR corner casting is damaged, it must be replaced. Weld repairs are PROHIBITED – all leading organizations (IICL, BIC, CSC) require that the corner casting be only replaced, never repaired by welding. The reasons are purely technical and safety-related:

• Metallurgical degradation – Cast steel is homogeneous and has undergone heat treatment for an optimal balance of strength and toughness. Welding creates a heat-affected zone (HAZ) that is susceptible to brittleness and cracking.
• Internal stress – Every weld introduces internal stress into the casting, which in combination with operational loading increases the risk of failure.
• Disruption of force transfer – The corner casting is designed for smooth transfer of large forces; a weld becomes a stress concentration point (weak point).
• Impossibility of quality control – Under operational conditions, it is not possible to guarantee weld quality and properties equivalent to the original casting and heat treatment.
• Catastrophic consequences of failure – Failure of a corner casting can cause container collapse, stack failure, millions in damages, and loss of human lives.

Replacement involves:

1. Removal of the old casting – welds are removed using cutting equipment (plasma cutting, oxyfuel)
2. Surface preparation – the frame is cleaned and prepared for welding (grinding to base metal, beveling)
3. Installation of the new casting – the new casting is precisely positioned with a gap of maximum 2 mm and welded
4. Testing – the new casting is tested the same as the original (dimensional inspections, visual inspection, ultrasound)

The new corner casting must comply with ISO 1161 and must be certified by a third party. The use of low-quality or non-standard spare parts can lead to safety issues and devaluation of the container.

Replacement procedure

Replacing a corner casting is an operation that takes several hours and requires skilled welders and inspectors. Costs range from 5,000–10,000 CZK depending on location and labor hours.

Service life and maintenance

A properly maintained BR corner casting typically lasts 20–25 years, often longer than the container itself. The key to a long service life is:

• Regular inspection – checking for cracks, deformations, and corrosion (recommended every 2–3 years or after 10 years of operation)
• Corrosion protection – maintaining a protective layer (patina on CORTEN steel) or coating
• Proper use – ensuring that handling equipment is in good condition and used correctly
• Prompt repairs – addressing minor issues before they become serious

Containers stored outdoors require more maintenance than those that are protected. CORTEN steel naturally protects itself using a patina, but ordinary steel requires a protective coating. For long-term outdoor storage, regular cleaning and inspection are recommended.

Maintenance program

The recommended maintenance program includes:

• Annual visual inspection
• Five-year detailed inspection
• Ten-year comprehensive inspection with testing

What are practical examples of BR corner casting use?

Maritime transport and stacking on ships

On modern container ships, containers are stacked in rows and layers. The BR corner casting plays a critical role in this process. When a container is placed on the second layer, the bottom corner castings (including BR) of the upper container rest directly on the top corner castings (TL and TR) of the lower container. The weight is transferred exclusively through these corners.

Modern container ships can carry thousands of containers – some up to 20,000 TEU (twenty-foot equivalent units). At such stacking density, the forces on the corner castings are enormous. Without precise standardization and high quality, this would be impossible. A typical container ship stacks containers to a height of nine layers, meaning that the lower containers bear the weight of up to 8 additional containers.

Examples of large container ships

The latest container ships (e.g., Ever Given) have a capacity exceeding 20,000 TEU. These ships use approximately 160,000 corner castings (20,000 TEU × 8 corners). The standardization and quality of corner castings are absolutely critical for the safety of these giant vessels.

Rail transport

In rail transport, containers are placed on special railway wagons (flat cars). The BR corner casting connects to the wagon via twist locks, which prevent the container from moving during transit. Railway wagons can carry two containers side by side, which requires precise alignment and securing. During rail transit, the container must move as little as possible – any movement could damage the cargo or compromise safety.

Rail infrastructure

Railway wagons are designed to fit precisely to the standardized corners of the container. Twist locks are inserted into the BR apertures and secure the container in place. Rail transport is one of the most economical ways to transport containers overland.

Road transport

On roads, containers are transported on special trucks (semi-trailers). The BR corner casting connects to the trailer using twist locks and sometimes also using mechanical securing devices (lashing rods). During transit, the container must move as little as possible – any movement could damage the cargo or compromise safety. Trucks are designed to fit precisely to the standardized corners of the container.

Safety in road transport

Secure fastening of the container to the trailer is critical for road traffic safety. If the container were to move during transit, it could tip over or cause damage. ISO 1161 ensures that twist locks and other securing devices will function correctly.

Container depots and terminals

In container terminals and depots, containers are handled using special equipment – cranes, handlers, reach stackers. All of these machines connect to the corners of the container, including BR. Terminals can handle hundreds of containers daily, meaning the BR corner casting must be extremely durable. A typical terminal performs thousands of handling operations per month with each container.

Terminal automation

Modern container terminals use automated systems that handle containers without human operators. These systems rely entirely on the standardization of corner castings. Any inconsistency could lead to failure of the automated system.

What are the most frequently asked questions and answers about BR corner castings?

Are all corner castings on a container identical?

No, there are four types (TL, TR, BL, BR) that differ in the orientation and shape of the apertures. Top and bottom corners differ in the position of the large aperture (top vs. bottom), and left and right corners are mirror images. It is not possible to interchange BL with BR – they have different aperture orientations and their substitution would lead to safety issues.

What material is the BR corner casting made from?

Exclusively from high-strength cast steel that complies with ISO 1161. CORTEN steel is most commonly used, which has natural corrosion resistance. Alternative materials (aluminum, cast iron) are not suitable because they do not have sufficient strength or toughness. The steel must have a tensile strength of at least 480 MPa and a yield strength of at least 275 MPa.

What is the load capacity of a single BR corner casting?

A single BR corner casting can bear a load of up to 86 tons without deformation during stacking (according to ISO 1161, this is 1,200 kN). The entire container (with four corners) can be loaded with up to 250 tons. This high load capacity is a result of the high strength of cast steel and precise geometry.

Why do corner castings protrude from the container outline?

Corner castings are intentionally designed to protrude from the container outline. This allows the entire weight to be transferred through the robust frame and corner columns, not through the walls or roof. If the corner castings were recessed within the outline, the walls would have to bear part of the weight, which would lead to their deformation and failure.

How long does a BR corner casting last?

A properly maintained BR corner casting typically lasts 20–25 years, often longer than the container itself. Service life depends on storage conditions (outdoors vs. covered), intensity of use, and quality of maintenance. Some corner castings have lasted 30–40 years.

Can I buy individual BR corner castings?

Yes, corner castings are sold individually and in sets of eight pieces. If you only need to replace one damaged casting, you can purchase a single BR. It is important to ensure that the new casting complies with ISO 1161 and is certified by a third party.

How much does a new BR corner casting cost?

The price of a BR corner casting varies depending on the manufacturer, certification, and quantity. It typically ranges from 1,000–2,000 CZK (excluding VAT) per piece. Sets of eight pieces are cheaper per unit. The price includes material, manufacturing, quality control, and certification.

Without BR corner castings, modern intermodal transport would not be possible. They enable the fast and safe transfer of cargo between ship, train, and truck without opening and reloading the contents. Their high quality and reliability are the foundation of global trade and logistics that we use every day. Proper maintenance and timely replacement of damaged castings are key to the safety and efficiency of transport.

Czech Republic

Corner Casting – BL Bottom Left (corner casting)

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1 300 Kč without VAT 1 573 Kč including VAT


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Corner Casting – BR Bottom Right (corner casting)

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1 300 Kč without VAT 1 573 Kč including VAT


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Corner Casting – TL Top Left (corner casting)

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1 300 Kč without VAT 1 573 Kč including VAT


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Corner Casting – TR Top Right (corner casting)

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1 300 Kč without VAT 1 573 Kč including VAT


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