the following example is for you reference.
 
  

WSS60 wrap-around heat shrink sleeve is designed for corrosion protection of girth Weld jointofBuried and exposed steel pipes, especially for 3-layer coated oil and gas pipeline.

Construction: 3-layer system

First layer: Liquid epoxy primer, solvent-free two-component.

Second layer: High shear strength hot-melt copolymer adhesive.

Third layer: Radiation cross-linked, high density polyethylene backing.

Product Features

? Excellent multifunctional adhesive allows for lower installation pre-heat temperature and super bonding to PE, PP and 

FBE, offer fully resistant to shear forces induced by soil and thermal movements.
?Superior cathodic disbondment and hot water immersion resistance offers the optimum barrier long-term protection against corrosion.    
? Saves time & cost by lower preheat temperature, wet epoxy primer application.

WSS type products are Available:

?as cut piece (pre-cut sleeve with separate closure patch)

?as a roll (closure patches to be ordered separately)

 

?Select sleeve width that will overlap onto the mill-applied coating by 2 inches (50 mm) minimum on each side of the weld joint. Take a 10% shrinkage during installation of sleeve width into account when calculating the minimum sleeve width.

?Sleeve cut lengths and appropriate closure patch widths depend on the pipe size and product construction, see application table.