This Polyethylene tape coating system is made up of Primer ( P 19 or P27) and polythylene inner tape (20 mils ,25 mils,30 mils ) and polyethylene outer tape ( 20 mils, 25 mils , 30 mils ). The polyethylene inner tape is Black, The polyethylene outer tape is White, overlap 50% .
Prepare surfaces by removing all loose scale, rust or other foreign matter by grit blasting or wire brush. Surface must be clean, dry and free of grease.Apply thin film of Butyl Primer to all surfaces to be wrapped and allow to dry. Peel back interleaving and apply adhesive side of the tape to the surface and press down. Apply the tape spirally with enough tension to make it conform. Remove interleaving as wrapping proceeds. Overlap each turn by at least 1" or 55% to achieve double thickness.
Irregular surfaces such as valves, flanges, etc.
Polyethylene outer tape T 238
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