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    Consisting of high-strength proprietary glass fiber reinforcement, the moisture-cured A+ Wrap™ advanced composite repair system is commonly used for pipelines and piping systems experiencing corrosion or mechanical damage.

    Following the ASME PCC-2 and ISO 28417 standards, A+ Wrap™ reinforces a pipe by containing hoop and axial loads, thereby reducing strain in the defect region. The system requires no special tools for application and sets within an hour after installation.

    Typical Uses:
    • External corrosion and pitting
    • Dents, gouges and scratches
    • Welds and other manufacturing flaws

  • Mechanical Properties 

    Attribute–Tensile Strength
    Method– ASTM D3039
    Value– 51,800 psi

    Attribute–Tensile Modulus
    Method–ASTM D3039
    Value–3.01 x 106 psi

    Attribute–Poisson’s Ratio
    Method–ASTM D3039

    Thermal Properties

    Attribute-Thermal Expansion
    Method–ASTM E831
    10.2 ?m/m/°C

    Attribute–Heat Distortion Temperature
    Method–ASTM D648
    Value–205 °C

    Attribute–Max Operating Temperature
    Method–ASME PCC-2
    Value–185 °C

    Attribute–Application Temperature
    Value– -50°F to 120°F     -46°C to 49°C

    System Properties

    Attribute– Ply Thickness
    Value–22 mils (0.022 inches)

    Attribute–Working Time
    Value20 – 30 minutes

    Attribute–Set Time
    Value2 hours

    Attribute–Cure Time
    Value–24 hours

    Attribute–Shelf Life
    Value1 year with proper storage

    Attribute–Stocked Sizes
    Value–From 2″ X 12′  to 12″ X 90′

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    1. Surface Preparation 
    Remove all soft coatings and media blast the pipe to a 2.5 mil profile (NACE 3 minimum). Wipe the surface with a solvent such as Acetone, Toluene, or MEK.


    2. Load Transfer Filler 
    Mix the putty or paste until uniform in color and apply to any defects. Shape the filler to near net surface profile of pipe.


    3. Adhesive Primer 
    Mix equal parts of the adhesive primer until uniform. Apply the primer to the pipe surface, ensuring a minimum of 30-mil coverage. Allow the primer to sit until a “peanut butter” thickness is achieved.


    4. A+ Wrap™ Preparation
    Remove the A+ Wrap™ from the foil pouch and submerse in water for 1 minute. Wrap the material around the pipe, while spraying each layer with water. Apply uniform tension during application.


    5. Apply Compression Wrap 
    Tightly apply 4-6 layers of compression wrap over the repair. Perforate the surface of the compression wrap to enable out-gassing.


    6. Apply Top Coating if Needed 
    Allow two hours for the A+ Wrap to harden before removing the compression wrap. Afterwards, if needed, apply the pipe coating.

  • Click here to review the product data sheet.

    A+ Wrap Data Sheet (Right Click and Save As)

  • Related Case Studies

    Read Case Study: Pipe Wrap® 20″ Natural Gas Pipeline -> http://infrastructure.milliken.com/site/user/files/43/Pipe-Wrap-A-Plus-Case-Study-LA.pdf

    Read Case Study: Offshore 10″ Riser Repair -> http://infrastructure.milliken.com/pages/case-studies/detail/0/95/