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Heat-shrinkable bell & spigot (socket) joint corrosion protection coating
Typically used on steel or ductile iron pipes coated with polyethylene, concrete or other coatings such as paint, zinc, etc. MEPS/HEPS/MPSM are also used to coat reducers, bends and dielectric joints.
They have a 2 layer construction consisting in a visco-elastic adhesive sealant and a thick walled, irradiation cross-linked, and high density polyethylene.