The product of MDDLG is a kind of special PVC pipe modification. The main physical indicators can be ranked beside the best of their kind in the world, and it is far superior to traditional asbestos cable calandria and general PVC pipe.

MDDLG subsurface CPVC pipes for high tension cable protection is mainly used in laying electric wires or cable for the function of direction and protection, in relation to traditional asbestos cable calandria. It has got the quality of fine flexibility, high temperature resistance, slow in fracture and aging, long service life and non radiocontamination. You don't need to pour the concrete and protection course and you will have the construction period shortened because of its low deadweight, simple construction and low price.

Should the cable be over-loaded and short circuit in the pipes; the high-temperatures developed didn't make difference to the products because its softening point is no lower than 93°C. The technical criteria of products can be ranked beside the best of their kind in the world, and it is widely used in domestic power system.