bitumen tape

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bitumen tape
Posting date : Mar 31, 2012
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35-
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bitumen tape is Cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, Waste Water underground or overhead pipelines and waterproofing. The Bitumen tape shall be applied after the primer by hand or with a wrapping machine II Structure The specification of the tape consists of three layers, Backing:Special blend of stabilized polyolefines Adhesive:Butyl rubber Bituminous Compound and Adhesion Promoting Resins Interleaf:Antiadhesive Film Treated with Silicone III Features: _ Heavy duty butyl bitumen compound adhesive _ Excellent adhesion to pipe and self _ Flexibility provides extra protection at vulnerable areas _ Excellent conformability and consistent uniform thickness _ Easily applied with no special equipment _ Compatible with common pipe coatings _ Excellent resistance to cathodic disbonding _ Resistant to UV _ Can be applied over a wide temperature range _ Good conformability and consistent uniform thickness _ Cold applied Ⅳ Technical datas: PHYSICAL PROPERPTIES UNIT TEST METHOD TYPICAL VALUES Total thickness mil ASTM D 1000 40mils 50mils 60mils 65mils Tensile Strength lb/in ASTM D 1000 30(5kg/cm) 35(6.3kg/cm) 39(7kg/cm) 42(7.5kg/cm) Elongation % ASTM D 1000 400 400 450 500 Length 25mtrs 20mtrs 15mtrs 10mtrs Width 2“,4”,6”,9” Peel adhesion To primed pipe oz/in ASTM D 1000 269(3kg/cm) 296(3.3kg/cm) 314 (3.5kg/cm) 340(3.8kg/cm) To backing oz/in ASTM D 1000 90(1kg/cm) 90(1kg/cm) 117(1.3kg/cm) 135(1.5kg/cm) Dielectric Strength KV/mm ASTM D 1000 42 42.6 43 43.8 Volume Resistivity ohm•m ASTM D 257 2.5 X 1012 2.5 X 1012 2.5 X 1012 2.5 X 1012 Water Vapor Transmission Rate g/ m2 /24h ASTM E 96 0.06 0.05 0.03 0.02 Water Absorptivity % ASTM D 570 0.1 0.1 0.1 0.1 Application Temperature F -31-+160 (-35-+70℃) Max service temperature F -40-+176 (-40-+80℃)

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