The WEL pipe is the first and significant step towards special use for Plant application. It is the ultimate 3 layered pipe will be the best solution for industrial applications. These multi-colored LLDPE cover provides a guide to identify all the fluid in a tube. More safe and efficient control is available. The color of LLDPE layer distinguishes the color depending on the characteristics of the transferred fluid and can be managed separately. It guarantees the stability of the pipe without problems even with external shock and poor sand installation. It has UV protection effect of LLDPE layer for exposure piping. It is possible to use all existing PE pipe joints.