Repairing Patch
（1）Characteristic
Specially used in repairing the damage of steel pipelines’ weld joint and corrosion protection.
There are two types, they are repairing patch (repairing patch has no heat-shrinkable quality) and repairing band. When the area of the damage under 100 mm2, we should use repairing patch to repair the damage. When above 100 mm2, use repairing band.
The heat-shrinkable sleeve has good mechanical capacities, such as enduring abrasion, resisting impact, and preventing penetration. Easily adapts itself to the environment.
（2）Selection (Unit: mm)
Repairing patch’s size is provided according to the customer’s demand, and it also can be provided as a roll
（3）Performance of FRDX
NO. Item Unit Typical Value Test Method 
1 Variation Rate Axial % 2 200℃、5min 
  Circular % 4 200℃、5min 
2 Softening Point ℃ 113 SY T 0041-97 
3 Shearing Strength MPa 2.3 GB T 4507-99 
4 Peel Strength (PE Steel) N cm 156 GB T 2792-98