Tapecoat – TC20 AS

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.

Spiral wrapping of TC20-AS hot-apply tape

Image Spiral wrapping of TC20 AS hot-applied tape

  • Excellent resistance to cathodic disbonding.
  • Excellent adhesion to pipe and self.
  • Good impact resistance.
  • Conforms to irregular fittings.
  • Minimal surface preparation as compared with other coating systems.
  • Compatible with most other common pipe coating systems.
  • Ease of application.
  • Must be applied using a wide mouth propane torch; heating pipe and tape as it is being applied.
  • Requires a primer for permanent adhesion.
  • The pipe must be clean and dry.
  • SSPC SP-2 Hand Tool Cleaning, SSPC SP-3 Power Tool Cleaning, SSPC SP-6/NACE No. 3 Commercial Blast Cleaning, or equivalent.
  • Spiral wrap or cigarette wrap.
  • 50% overlap for increased impact resistance.

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  • New construction.
  • Reconditioning and maintenance of existing pipelines.
  • Coating girth-welds, tees, bends, and fittings.

SPECIFICATION & SIZES

Property Value
Thickness 65 mils
Cathodic Disbondment, 30 days <10 mm
Water Absorption <1%
Impact Resistance Single Layer Double Layer 45 in lb. 135 in lb.
Tensile Strength 125 lbf/in

 

Size Quantity
2×75 12
3×75 8
4×75 6
6×75 4
12×75 2

 

PACKAGING INFORMATION

  • 1.5 SQ (150 sf) per case.
  • Case Weight: 70 lbs.
  • 24 cases per pallet.
Where can I purchase TC20 AS?

TC20 AS is available through most pipeline coatings and material supply houses. Contact Chase Corporation for a representative in your area.

How much tape is needed for application?

TC20 AS is available in 2”, 3”, 4”, 6”, and 12” widths. Roll length: 75 ft. Case packaged: 1.5 SQ (150 ft2) per case. For coverage rates,  contact a Chase technical representative for assistance.

How much tension is needed when applying TC20 AS

Apply sufficient tension so that a small bead line of liquid asphalt is visible.

Can TC20 AS be applied over other coating systems?

TC20 AS can be used as a girth weld coating over a new mainline coating and is used as a repair or reconditioning coating over an existing mainline coating.

Can TC20 AS be applied in cold weather?

Yes, TC20 AS can be applied at temperatures as low as 0°F. TC20 AS must be applied using a wide-mouth propane torch to preheat the pipe. The substrate temperature should be preheated to 100-140°F (38-60°C).

Does preheating the pipe provide any benefits?

Yes, it is a requirement for TC20 AS. Preheating the pipe aids in the drying process and helps to improve the adhesion and performance of the coating system.

Which side of the TC20 AS gets heated?

Apply heat to the side labeled “TORCH THIS SIDE”. Do not remove the film before heating.

Is a primer needed with TC20 AS?

Yes, TC20 AS requires a primer for permanent adhesion. A 3 to 3.5 mil WFT of Tapecoat AS Primer should be applied and allowed to dry prior to application of the tape. Typical dry time is 5-10 minutes at 70°F (5-10 minutes at 21°C).

How much time is needed between primer coat and tape coat?

TC20 AS requires a primer for permanent adhesion. A 3 to 3.5 mil WFT of Tapecoat AS Primer should be applied and allowed to dry prior to application of the tape. Typical dry time is 5-10 minutes at 70°F (5-10 minutes at 21°C).

Can I apply TC20 AS in humid conditions?

Yes, TC20 AS can be applied in humid conditions, but it’s critical that the surface is DRY. TC20 AS must be applied using a wide-mouth propane torch to preheat the pipe. The substrate temperature should be preheated to 100-140°F (38-60°C).

What is considered a surface contaminant?

Surface contaminants are all substances that will impede bond or otherwise be detrimental to the performance of the coating system. These contaminants must be removed prior to the coating application. This includes condensation and all loose surface materials such as rust, dirt, dust, moisture, grease, oil, sharp edges, burrs, mill scale, welding splatter, and shop lacquer.

What is the recommended means for surface preparation?

When coating a metal substrate with the Tapecoat AS Primer the pipe cleaning must meet either SSPC-SP 2 or SSPC-SP 3 at a minimum, but SSPC-SP 6/NACE No. 3 can also be used. When the TC 20 AS is used as a girth weld coating over a new mainline coating the mainline coating must meet SSPC-SP 1 at a minimum. When the TC 20 AS is used as a repair or reconditioning coating over an existing mainline coating the mainline coating must meet SSPC-SP 1 at a minimum, but SSPC-SP 2 or SSPC-SP 3 are preferred when practical.

Which SSPC-SP standards are recommended when apply TC20 AS and Tapecoat AS Primer?
  • SSPC-SP 1 SOLVENT CLEANING
  • SSPC-SP 2 HAND TOOL CLEANING: Scrapers, files, and wire brushes.
  • SSPC-SP 3 POWER TOOL CLEANING: Power brushes and grinders
  • SSPC-SP 6 / NACE No.3 COMMERCIAL BLAST CLEANING
Advantages & Benefits
  • Excellent resistance to cathodic disbonding.
  • Excellent adhesion to pipe and self.
  • Good impact resistance.
  • Conforms to irregular fittings.
  • Minimal surface preparation as compared with other coating systems.
  • Compatible with most other common pipe coating systems.
  • Ease of application.
How to Use It
  • Must be applied using a wide mouth propane torch; heating pipe and tape as it is being applied.
  • Requires a primer for permanent adhesion.
  • The pipe must be clean and dry.
  • SSPC SP-2 Hand Tool Cleaning, SSPC SP-3 Power Tool Cleaning, SSPC SP-6/NACE No. 3 Commercial Blast Cleaning, or equivalent.
  • Spiral wrap or cigarette wrap.
  • 50% overlap for increased impact resistance.

Connect with us:

Blog | LinkedIn | Twitter | YouTube

Where to Use It
  • New construction.
  • Reconditioning and maintenance of existing pipelines.
  • Coating girth-welds, tees, bends, and fittings.
Specification & Sizes

SPECIFICATION & SIZES

Property Value
Thickness 65 mils
Cathodic Disbondment, 30 days <10 mm
Water Absorption <1%
Impact Resistance Single Layer Double Layer 45 in lb. 135 in lb.
Tensile Strength 125 lbf/in

 

Size Quantity
2×75 12
3×75 8
4×75 6
6×75 4
12×75 2

 

PACKAGING INFORMATION

  • 1.5 SQ (150 sf) per case.
  • Case Weight: 70 lbs.
  • 24 cases per pallet.
Frequently Asked Question
Where can I purchase TC20 AS?

TC20 AS is available through most pipeline coatings and material supply houses. Contact Chase Corporation for a representative in your area.

How much tape is needed for application?

TC20 AS is available in 2”, 3”, 4”, 6”, and 12” widths. Roll length: 75 ft. Case packaged: 1.5 SQ (150 ft2) per case. For coverage rates,  contact a Chase technical representative for assistance.

How much tension is needed when applying TC20 AS

Apply sufficient tension so that a small bead line of liquid asphalt is visible.

Can TC20 AS be applied over other coating systems?

TC20 AS can be used as a girth weld coating over a new mainline coating and is used as a repair or reconditioning coating over an existing mainline coating.

Can TC20 AS be applied in cold weather?

Yes, TC20 AS can be applied at temperatures as low as 0°F. TC20 AS must be applied using a wide-mouth propane torch to preheat the pipe. The substrate temperature should be preheated to 100-140°F (38-60°C).

Does preheating the pipe provide any benefits?

Yes, it is a requirement for TC20 AS. Preheating the pipe aids in the drying process and helps to improve the adhesion and performance of the coating system.

Which side of the TC20 AS gets heated?

Apply heat to the side labeled “TORCH THIS SIDE”. Do not remove the film before heating.

Is a primer needed with TC20 AS?

Yes, TC20 AS requires a primer for permanent adhesion. A 3 to 3.5 mil WFT of Tapecoat AS Primer should be applied and allowed to dry prior to application of the tape. Typical dry time is 5-10 minutes at 70°F (5-10 minutes at 21°C).

How much time is needed between primer coat and tape coat?

TC20 AS requires a primer for permanent adhesion. A 3 to 3.5 mil WFT of Tapecoat AS Primer should be applied and allowed to dry prior to application of the tape. Typical dry time is 5-10 minutes at 70°F (5-10 minutes at 21°C).

Can I apply TC20 AS in humid conditions?

Yes, TC20 AS can be applied in humid conditions, but it’s critical that the surface is DRY. TC20 AS must be applied using a wide-mouth propane torch to preheat the pipe. The substrate temperature should be preheated to 100-140°F (38-60°C).

What is considered a surface contaminant?

Surface contaminants are all substances that will impede bond or otherwise be detrimental to the performance of the coating system. These contaminants must be removed prior to the coating application. This includes condensation and all loose surface materials such as rust, dirt, dust, moisture, grease, oil, sharp edges, burrs, mill scale, welding splatter, and shop lacquer.

What is the recommended means for surface preparation?

When coating a metal substrate with the Tapecoat AS Primer the pipe cleaning must meet either SSPC-SP 2 or SSPC-SP 3 at a minimum, but SSPC-SP 6/NACE No. 3 can also be used. When the TC 20 AS is used as a girth weld coating over a new mainline coating the mainline coating must meet SSPC-SP 1 at a minimum. When the TC 20 AS is used as a repair or reconditioning coating over an existing mainline coating the mainline coating must meet SSPC-SP 1 at a minimum, but SSPC-SP 2 or SSPC-SP 3 are preferred when practical.

Which SSPC-SP standards are recommended when apply TC20 AS and Tapecoat AS Primer?
  • SSPC-SP 1 SOLVENT CLEANING
  • SSPC-SP 2 HAND TOOL CLEANING: Scrapers, files, and wire brushes.
  • SSPC-SP 3 POWER TOOL CLEANING: Power brushes and grinders
  • SSPC-SP 6 / NACE No.3 COMMERCIAL BLAST CLEANING
Application Details

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.

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