For pipes, the inside diameter (ID) is of primary importance as it defines the capacity of the pipe. Whereas, for tubes the outside diameter (OD) is more important. Due to the manufacturing process, it is very difficult to achieve both a precise ID and OD. Due to the natural flow of the raw material either the ID or the OD can be consistent, but not both.

Although plastic tubing is usually round, some applications require a different shape. We offer a large range of square plastic tubes and also some rectangular plastic tubes. If you require PVC tube that is a different shape, such as oval or triangular, we also manufacture custom plastic extrusions. This would incur tooling costs and is for production runs with an average of 2000 metres, depending on the size of the profile. What can our plastic tubes be used for? We offer 16mm multiplayer pipe in a range of lengths to suit your needs, and in a Premium Pex-Al-Pex option for maximum efficiency.WRAS Approved– This pipe has been tested and certified with full UNITED KINGDOM ‘WRAS’ approval – a rigorous testing procedure which certificates only the highest quality products as fit for use in UK domestic water applications. High temperature resistance- a maximum sustained working temp up to 70°c & maximum transient temperature up to 85°c At MKM Extrusions we manufacture as well as supply plastic tubing. We make all our extruded profiles in our UK factory and just sell direct, we don’t have any suppliers or distributors.

The difference between Pert-Al- Pert pipe and EVOH Pert pipe and is that PAP can be used in underfloor heating and potable water applications, and is form-stable. The layer construction of our 16mm multilayer pipe makes it highly heat-resistant and split-resistant: it can withstand a broad range of temperatures and pressure of up to 10 bar. However, these layers also make it flexible and easy to cut. Bending it into a shape it ‘remembers’ and cutting it to the correct length is simple. This pipe is also corrosion free, with an aluminium core that prevents the ingress of oxygen. Our range of premium 16mm pert-al-pert pipe is manufactured to ISO9001 European standards ensuring outstanding performance & reliability in all types of warm water underfloor heating systems. A good way to explain the difference between rigid PVC and flexible PVC is that rigid PVC tubing is more like a ruler whereas flexible PVC tubing is coiled and can be put around your waist like a belt.

Shipping

PEXb-AL-HDPE pipe is stiffer than a PEXb-AL-HDPE pipe and is not suitable for use in Overfloor heating systems that require tight bends and close pipe spacing.

The WRAS approval determines that this product can be used in all UK domestic plumbing applications including drinking water installations – as well as central heating and underfloor heating applications. If you are not sure which type of plastic tubing you need then you are welcome to get in touch to request samples which we will post to you using Royal Mail. Plastic tubing shapes Barbed fittings can be pushed straight in to 16 mm outside diameter LDPE pipe. This is however a lot of pushing and can be made much easier by heating the pipe prior to installation. If you are fitting a few fittings then leaving the pipe in a warm place over night or in the sun during the day will ease installation however if you are fitting a lot of them then you should heat the end of the pipe in some very hot water or heat it using a Blow torch. If you are using a blow torch then position the pipe in the flame so that the heat is evenly spread round the pipe. Hold it in the flame for 2 seconds and then remove it from the flame. Now insert the barbed fitting in to the pipe.We offer some sizes in a flexible PVC. Flexible PVC tubing is suitable for internal rather than external applications. Rigid or flexible PVC tubes?