SHS-340 type shrink sheet is intended for the complete wrapping of weld heads in the field. The role of the sheet is to protect the weld from corrosion. The sheet is comprised from a cross-linked polyethylene and an internal layer made from a Butyl rubber based compound.
Technical information
Characteristics
- Excellent durability against corrosion, impact and penetration.
- Excellent durability against periodic changes in temperature, ground stress, hydrostatic pressure and chemical corrosion.
- Excellent durability against Cathodic Disbonding, microorganisms and bacteria.
- Easy application in all pipe diameters and suitable for repairs and for coating all types of accessories in the field.
- No expert workers are required for application. The sheet is applied within minutes by using a gas blowtorch
Uses
- Anti-corrosive protection of head connections of water and gas pipelines.
- Anti-corrosive protection of head connections of communication and electrical power supply pipelines.
Installation
- Clean the weld with a mechanical steel brush.
- Heat the welded area or the area designated for coating to a temperature of 60⁰
- Remove the protection sheet from the shrink sheet. Center the sheet to overlap the pipe’s coating from both sides of the weld.
- At first heat the patch sheet and attach it to the entire width of the shrink sheet.
- Heat using a gas blowtorch. Start heating from the weld, heat the perimeter around the pipe in order to shrink the sheet. Continue heating towards the edge of the sheet while making sure to release trapped air.
- Wait for complete cooling before touching the pipe.
