Denso North America - Leaders in Corrosion Protection Denso, Denso North America, Denso North America Inc., Wax Tapes, corrosion protection, corrosion prevention, anti-corrosion coatings, pile protection, Protal, petrolatum tape, petrolatum tapes, SeaShield, pipe coatings, fiberglass Jackets, marine borer protection, underwater grouts, hi-temp coatings, butyl tape, anti-corrosion coatings, protective pipeline coatings, outerwraps, petrolatum wax tape Denso North America has offices throughout the USA and Canada and is a wholly owned subsidiary of Winn and Coales International originally established in London, England in 1883.