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Transit frames

A ship’s structure is subject to constant and varying motions due to wave action and propulsion. Furthermore, it may expand and contract when subject to temperature variation. In turn, these actions expose transit frames to extremely powerful forces, conditions rarely encountered – if at all – with land-based applications involving static walls. Thus, the design, materials, construction and finish of frames play decisive roles in determining the safety of frames in withstanding constant stress in marine environments.

Frame units are cut, welded, grinded and stamped with our logo, date of manufacture and material specification for identification and traceability. The complete frames are inspected and then dipped in a corrosion-resistant paint before being inspected for quality.


The requirements on our frames are high and so are the regulations on materials and welding procedures. We have our own IWS (International welding specialist) and IWI (international welding inspector) for the welding operations, manufacturing process and quality of the frames.
We perform non-destructive testing (NDT) acc ISO 9712: Level three visual control and penetrant testing on every range of transit frames, for both welding and bolting.
We meet the stringent demands of maritime and offshore applications.

Insert blocks

The physical stability and safety that insert blocks give to transits is derived primarily from two main features. The composition of the insert blocks ensures that they are tough and robust. Because of their simple, modular construction, the blocks totally seal the space between cables/pipes. The other benefit is the very precise fit that insert blocks of different sizes achieve around cables/pipes. Together, these features make sure that not even gas can pass through a packed transit when it is installed correctly.

MCT Brattberg insert blocks are manufactured from Lycron, a synthetic halogen-free polymer containing a lubricant that was specially developed according to our specifications to withstand fire, explosions, temperature variation, ageing, radiation and pests. The blocks are injection moulded to give precision components with a high degree of accuracy. Standard blocks are available for cable diameters from 4-100 mm. Other dimensions can be supplied to order.

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Our Business Idea

MCT Brattberg endeavourers to protect people and property through the design, development and manufacture of high-performance cable and pipe transits.

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QA System

Every product in our system is manufactured according to a tried and tested quality control system that is fully documented.

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Our History

MCT Brattberg´s origins reach back to 1759, a time when Lyckeåborg, in southern Sweden was designated the site for the construction of a copper hammer.

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Privacy policy

MCT Brattberg values your personal integrity, and our aim is to always maintain a high level of data security. Our privacy policy describes why we collect information about you, what type of information is collected, how the information is processed, and what your rights are.

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