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Product

Repair Product

Product
Repair Product
SHAIC pipeline coating repair products are widely used from the field in which is the pipe coaing damaged for a continuous stipendiary prevention effect. The Repair Patch, Mastic Filler and Melt Stick are the product. It will be able to repair the damage which occurs from pipe transportation and load process effectively.

Repair Patch

Repair Patch is composed of fiber inserted cross-linked polyolefin backing and heat sensitive adhesive. This product has superior adhesion and sealing up effect as well. It will be able to expect reliable corrosion prevention and shear forces and abrasionresistance. It can be used installed quick with no special tools and skills required.
  • · Size: 1.6mm X 150mm X 10m (up to 450mm width)
  • · Code: RPR2-33-6-BL

Mastic Filler

Mastic Filler is used to fill larger voids and deep damaged coatings prior to the application of Repair Patch.
  • · Size: 3.0mmx40mmx6m
  • · Code : MF-100-4-BL

Melt Stick

Melt Stick is composed of heat-activated with a stick form. This product is used the place where the pipe surface it re- pairs a small damage. It could be used as a filler material with Repair Patch.
  • · Size: 10mm diameter X270mm length
  • · Supply: 3kg/box

roduct Selection Method

roduct Selection Method
Max. Operating Temperature Compatible Line
Coating Product 		Product
Small damage or Scratch 114°F(80°C) PE, FBE, CTE Only Melt Stick or With Repair Patches
Damage PE, FBE, CTE Melt Stick with Repair Patch or Mastic Filler with Repair Patch
Large damage Heat Shrinkable Sleeve is recommended.
※ Note: Before ordering the product, for the selection of the product that is appropriate inquire surely in SHAIC representative.

Physical Properties

Physical Properties
Properties Test Method Values
Inner Layer  Softening Point  ASTM E28 110℃ (217℉)
Lap Shear  DIN D1002 24N/cm2 (35psi)
Outer Layer  Tensile Strength  ASTM D638 20Mpa↑(2840psi)
Elongation  ASTM D638 450%↑
Abrasion Resistance ASTM D1044 38mg
Hardness  ASTM D2240 45
Volume Resistivity ASTM D257 1015Ω㎝↑
Dielectric Breakdown  ASTM D149 28kV
Patch Impact Resistance  ASTM E14 Pass(Class C)
Peel Strength to Steel  ASTM 1000 25N/cm
Water Absorption ASTM D570 0.05%↓
Cathodic Disbondment ASTM G8 12mm

Application Instruction

  • Pipeline Repair Products
    Repair Patch is typically shipped in bulk rolls and field cut to size. Melt Sticks and Mastic Fillers are used to repair holidays fill voids.
  • Storage & Safety Guidelines
    These installation instruction are intended as a guide for standard products.
  • 1. Removal of Damaged Coating
    Remove damaged coating with a knife or hand grinder to prevent crack propaga tion in the coating.
  • 2. Solvent Cleaning
    Clean exposed steel and adjacent pipe coating with an approved cleaner (as per SSPC-SP-1) to remove the presence of oil, grease and other contaminants.
  • 3. Surface Preparation
    Remove adhering rust, coating chalk, dirt and roughen the mill applied coating in the repair zone using an abrasive paper! cloth or wire brush.
  • 4-1. Melt Stick Application
    Use a low intensity yellow flame for preheating the coating and applying the repair products. With quick back and forth stokes, pre-heat the repair zone suffi ciently to remove moisture and assist in adhesion.
  • 4-2. Melt Stick Application
    Heat the Melt Stick and the repair zone simultaneously with the torch and spread the Melt Stick over the damaged area. Keep the flame moving to prevent dam- aged to the coating. Some ignition of the Melt Stick is acceptable.
  • 4-3. Melt Stick Application
    Continue spreading the Melt Stick over the repair zone until the entire area is covered. After sufficient melt stick material is on the surface, apply additional heat in quick back-and- forth strokes to create a smooth surface.
  • 4-4. Melt Stick Application
    Ensure that the Melt Stick material completely covers the repair zone. The Melt Stick material should be spread liberally so that the material is raised above the coating surface.
  • 4-A. Mastic Filler Installation
    Fill deeper crevices with Mastic Filler (MF). Unroll the filler material and cut off the required amount.
    Leaving the release paper in place.
  • 4-B. Mastic Filler Installation
    Use a low intensity yellow flame for preheating the coating and applying the repair products. With quick back and forth strokes, pre-heat the repair zone sufficiently to remove moisture and assist in adhesion.
  • 4-C. Mastic Filler Installation
    Place the filler material onto the damaged area with the release paper facing up. Firmly press the material into the dam- aged area by hand and remove the re- lease paper.
  • 4-C. Mastic Filler Installation
    After filling the damaged area, remove the excess filler to create a smooth sur face. As an option, use a low intensity yellow flame to warm the material and assist in smoothing it out.
  • 5. Patch Preparation
    Cut a patch large enough to extend a mimimum of 50mm(2") beyond the edge of the repair zone. Trim each corner of the patch about 10- 25mm(1/2"-1") at a 45, angle.
  • 6. Pre-Heat
    Warm the damaged area (repair zone + 50mm (2") overlap) to remove moisture and assist in adhesion.
  • 7. Patch Installation
    After removing the release liner from the cut patch, place the patch with the adhe- sive side up on a gloved hand. Or on top of the pipe, and heat gently. Heat until the adhesive softens and the surface be- comes glossy. Also, reheat the damaged area to keep it warm.
  • 8. Patch Installation
    Apply the softened adhesive side of the patch to the damaged area and press down firmly. Heat the patch with a low in- tensity flame, and usign a roller or a gloved hand, pat down and remove wrin- kles. Roll to ensure a good bond.
  • 9. Inspection
    Visually inspect the installed patch for the following:

    1. Patch is in full contact with the pipe coating .

    2. There are no loose edges.

    3. A successful patch has adhesive flow on the edges.

    4. The patch has fully conformed to the coating.

    5. No cracks or holes in patch backing.

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