Basic Sizing Data

m-pipe can be provided in nominal diameters from 2in to 24in. 

The wall thickness is selected based on service conditions and particularly internal pressure and external hydrostatic requirements. The manufacturing process is flexible and allows almost any practical wall thickness to be selected so that the pipe can be optimised to the service conditions.

Thick walls can be easily manufactured without problems of material property knockdown typical of metallic pipes. The ability to produce thick walls with high material properties means that m-pipe can be manufactured to meet extreme pressure requirements up to 20,000psi. Furthermore the wall thickness can easily be varied along the length of the pipe to reflect variations in service conditions due to hydrostatic properties.

Wall thickness sizing is a little more involved than a normal steel pipe but Magma has the software, benchmarked against test data, to allow sizing to be conducted quickly and efficiently; taking account of API and DNV code requirements. As a simple rule of thumb our experience is that m-pipe wall thicknesses are similar to an equivalent steel pipe sized with an 80ksi yield.

Where required we are able to increase wall thicknesses locally to accommodate higher loading at interfaces or where buoyancy modules or tethers are attached.

Typical m-pipe sizing data for 2000m water depth at 5,000psi