PVC Bitumen Tape

1. Product Description T5000 PVC bitumen tape is ‘All Weather’ corrosion protection self-adhesive tape. It is for the protection of steel and ductile pipes, welded joints, bends and fittings and similar structures from corrosion above or under ground or immersed or submarine. The tough and flexible PVC backing is selected to suit different requirements of soil conditions and pipe diameters. PVC bitumen tape can be applied by most operators with the minimal amount of training on site/ in situ by hand or in a workshop by machine. 2. Composition Self-adhesive Backing layer is a tough and flexible PVC, which has high resistance to alkali and acid, and exception resistance to damage by impact or poor backfill and in aggressive ground condition. The adhesive layer is modified bitumen compound or fabric reinforced modified bitumen compound, which is thick and has high shear resistance and high resistance to cathodic disbondment. Suitable for wide range temperatures and different grade corrosion protection requirement. The bitumen compound layer is protected by a release liner, wider than the tape to prevent contamination, removed/discarded during application. 3. Instructions for Use A) Cold Applied B) Surface Preparation Remove any dirt, oil, grease, rust by suitable methods. Remove any metal burrs or weld spatter. The minimum requirement for surface preparation of pipe /steel surface is by mechanical/power wire brushing to remove any rust scales. Grit blasting can also be done in heavily contaminated areas. C) Priming Primer should be compatible with T5000 PVC bitumen coating. Stir the contents of the primer for 1-2 minutes to remove any sediment. Apply the primer with a brush or roller evenly to ensure complete sealing of all small undulations and imperfections. D) Wrapping To protect the metal structures from the environment the tapes must cover the entire surface. Wrapping should not commence until the primed surface has become touch dry. Apply suitable width strips of tape or molding compound along the weld bends or uneven surface and press firmly. Peel back 150mm to 300 mm of the release liner and apply the tape, adhesive side, to the primed surface. The angle of the tape mush be such as to produce specified overlap. Apply only sufficient tension to ensure good conformation avoiding air pockets and bridging. Ensure end lap area of at least 150mm when splicing the tapes. 4. Storage and Shelf life PVC bitumen tape should be stored under cover, out of direct sunlight and protect from extreme temperatures. Storage area should be cool, dry, well ventilated and regularly monitored for temperature and major sources of heat. Ambient temperature inside storage areas should be always be less than 30℃. Recommended storage temperature is between +5℃ to +30℃. In tropical climates the product must be stored in an air-conditioned environment. Self-life is up to 12 month when stored as per recommended storage conditions. 7. Supply ●　Roll Width: 50, 75, 100, 150, 200, 225, 300, 325 mm or to order. ●　Roll length: 10, 12, 15, 20, 30, 60 m or to order. ●　Core size: 38, 41, 76 mm or to order. 8. Equation for Anti Corrosion Protection Requirements (Width of Coating in inches) ×(Area of pipe in square feet)* ●　------------------------------------------------------------------------------=Squares **of Coating Required (Width of coating in inches-Overlap in inches) ×100 *Area of pipe in square feet=(Diameter in inches) /12×3.1416×(Length in feet) **One square=One hundred square feet=9.29 square meters (Width of Coating in mm) ×(Area of pipe in square meter)* ●　-----------------------------------------------------------------------------=Square meter of Coating Required (Width of coating in mm-Overlap in mm) *Area of pipe in square meter=（Diameter in mm)/1000×3.1416×(Length in meter)