Covalence Heat Shrinkable Products are a broad range based on irradiated cross-liked polyethylene carrier combined with a hot melt or mastic coating.
Each system is designed for a specific line coating integrity so it remains consistent from factory line coat process to the field weld process.
Covalence makes a fast, reliable weld coating install to meet tight, demanding construction needs with whatever line pipe coating chosen, declares the manufacturer.
The DIRAX system is a fiberglass reinforced bore sleeve with a hot melt adhesive, combined with an epoxy primer as the initial coat of the multilayered system. It offers intense corrosion protection for heavy wall pipe in adjacent with ARO factory coated line pipe. The chemical bond between the hot primer layer and hot melt adhesive backing makes a two-layer system. Once combined and installed, the fiberglass reinforced polyethylene layer makes a third intense hard shell layer to repel rocks and trauma of boring pipe.
DIRAX is also quickly installed. It comes 2 through 24-in. in a variety of cutbacks.
Midwestern Pipe Line Products Company
2119 South Union Avenue, Tulsa OK 74107-2703