TC20 AS | Hot-Applied Asphalt Tape System
Tapecoat TC20 AS
Chase Corporation’s Tapecoat TC20 AS hot-applied asphalt tape coating system provides corrosion protection to critical infrastructure within the oil, natural gas, water, and other associated industries.
- The use of TC20 AS is designed to provide superior soil stress resistance on pipelines with service temperatures up to 120°F (49°C).
- This coating provides protection against corrosion and electrolysis on metal substrates.
- The TC20 AS is a tough, abrasion, and impact-resistant coating that can be used in new construction, reconditioning, and coating girth-welds.
Tapecoat offers a complete and highly respected line of corrosion protection coatings. TC20 AS provides lower material costs compared to comparable hot-applied asphalt systems and epoxy coatings.
Image Spiral wrapping of TC20 AS hot-applied tape
Application of Tapecoat AS Prime and TC20 AS Hot-applied Asphalt Tape
Step 1: The pipe must be clean and dry – remove all loose materials that will impede the bond. Use a propane torch to preheat the surface to 100-140°F (38-60°C).
Step 2: Apply 3.0 – 3.5 wet mils of Tapecoat AS Primer by brush. A thin coating of primer will minimize the dry time. Allow primer to dry to touch.
Step 3:Ensure the pipe is heated to 100-140°F and before wrapping. Use a propane torch to heat the tape’s adhesive side until the burn-off film and texture begins to diminish. The wrap should start on the downward side of the pipe between 1 and 5 o’clock positions.
Step 4: Heat 6 – 12 inches more tape than what is needed to complete a wrap and never point the torch directly towards the pipe. A 50% overlap is recommended regardless of tape width or pipe size.
Step 5: Apply TC20 AS under tension. Look for molten adhesive at the edges of the tape wrap and good adhesion with the pipe. TC20 AS can be torn by hand.