Massiv Mesh is a flexible, concrete mattress consisting of hexagonal concrete elements linked together with high strength non-degradable polypropylene rope. The mattress has many uses in the protection, support and stabilisation of subsea structures and has been designed for its flexibility and ease of handling during installation. Flexiweight is a concrete mattress consisting of hexagonal section bars, reinforced with steel and linked by polypropylene rope. Flexiweight is flexible, robust, designed for ease of installation and available in a range of sizes and concrete densities. SeaMat is a stabilisation and protection system, based on bitumen coated aggregates, encased within a man-made woven fibre envelope, complete with integral lifting strops.
Reinforcement is achieved by the use of a polypropylene Geogrid cage.
The concrete provides an external structure which resists hydrostatic loads and allows for the offshore deployment of the unit. The foam lies totally within and totally protected by the concrete and provides very high levels of thermal insulation. The composite also has a high thermal inertia which provides very long cool down periods in case of unplanned emergency shut down of the typical subsea flowline. The installation regime involved lifting the pipe bundle and closing the pair of shells around the bundle. For further information please refer to our website which focuses on the major subsea problems and demonstrates how SeaMark products can handle them.