Type 2 or co-extruded, is a two-layer pressure or non-pressure pipe produced by extrusion from two raw materials.

During extrusion, a second layer of raw material with the same or with similar physical properties is added to the first layer and both raw materials are merged together, but according to EN12201-2-2011 + A1-2013 it is still considered to be two layers. The thickness of the layers of a type 2 pipe is not specified in the mentioned standard, it is chosen by the manufacturer. The second or outer layer is often thinner and of a different color than the first or inner layer. The color of the outer layer indicates the use of the pressure or non-pressure pipe. For example, blue indicates a water pressure pipe and brown indicates a sewer pressure pipe. Type 2 non-pressure pipe is, for example a cable protection pipe. Unlike a pressure pipe with a PP coating (type 3), it is not possible to separate the layers of type 2 pressure or non-pressurized pipe. Type 2 pressure pipes are well suited for trenchless installation methods (no dig) where there is a risk of damaging the pressure pipe. If PE100-RC raw material is used, the type 2 pipe can also be installed in an open trench directly at the bottom of the trench without a gravel pad. If scratches or damage are visible, it must be made sure  that the damage must not be deeper than 10% of the nominal wall thickness of the pipe (applies to pressure pipe). Type 2 pressure pipe can be connected by butt and electric welding.