Hot Applied Anti-Corrosive Bituminous Tape

Description

PipeWrap - BT is a hot applied bituminous tape for corrosion protection conforming to IS: 10221, Appendix B. Specially formulated corrosion resistant bitumen compound provides high softening point, high penetration and high resistance to ageing. PipeWrap – BT comprises of high tensile strength thermo-fusible HMHDPE film on both the sides.

2 mm PipeWrap - BT is five layer without fiber glass inner core, whereas, 3 / 4 mm thick PipeWrap - BT is seven layer tape with two inner cores; top core is of tough 45 gsm fiber glass and the bottom core is of 15 micron high tensile strength HMHDPE.

Characteristic

Application

Coating material for drinking water pipelines, fire fighting pipelines, raw water pipelines in thermal plants etc.

• Applied on buried and immersed pipes, fittings and appurtenances to protect them from high corrosive environment

   

Advantages

• Coating material for drinking water pipelines, fire fighting pipelines, raw water pipelines in thermal plants etc.

• Applied on buried and immersed pipes, fittings and appurtenances to protect them from high corrosive environment

   

Application Methodology

• Remove dust, flakes, oil, grease or other loose foreign particles by blasting, wire brush or compressed air.

• Leave 200 mm from pipe ends for welding joints. Coat and wrap such left over part of pipe at site after welding and hydro testing.

• Apply ShaliPrime PW BT on cleaned surface at 100 - 120 ml/m2 to get DFT of 30 microns.

• Allow the primed surface to touch dry, which may take 5 - 15 minutes.

• Remove PE film and show the flame of butane gas torch on to the surfaces till it becomes glossy-smooth.

• Coat PipeWrap – BT on the primed surface. Provide overlap of 25 mm between two adjoining layers. Wrap spirally and apply sufficient tension to ensure good adhesion and avoid pockets and bridging to meet holiday detection requirement. Tape joint shall face downward on outside of lap joint.

  Complete necessary welding and testing of the joint before coating.

• Recommend to apply at the time of pipe erection and lowering inside trenches to avoid any damage.

Health and Safety

• Use goggles and hand gloves during application

• Clean hands with warm water after application.

Packing

Available in 2 mm, 3 mm and 4 mm thickness with width of 250 mm, 500 mm and 1000 mm. Each roll of 2 mm / 3 mm tape consists of 20 Mtr length, whereas each of roll of 4 mm tape consists of 10 Mtr length.

Storage

Keep under shed away from heat. Do not stack more than three rolls in one column.