PETROTAPE ( PTY) LTD

 Tape wrapping for pipes, adhesive tapes and associated products

Application of the Petrotape system to couplings and  flanges

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Surface preparation

Remove all loose mill scale, paint (that is not supposed to be there), old  coating and the like by abrasive blasting or wire brushing.

File down all protruding sharp points and rough edges. Wipe off all  moisture on the coupling with a dry, clean cloth.

Priming

Apply either Petroprimer by brush or Petropaste by gloved hand to the  clean, dry coupling surface. Ensure a uniform coating over the entire pipe  surface.

Avoid doing the priming application in wet or very dusty (with wind)  conditions.

Please note that the Petroprimer is flammable and so all necessary  precautions should be taken, specially with regard to open flames (such as  cigarettes) near to the storage or application  sites.

Mastic

Pack Petromastic into and around the coupling / flange / irregular shape  to provide an even contour around which the tape can be later applied.   The mastic putty should be packed so as to cover all bolts, bolt heads and any  other irregular shapes which would otherwise leave air pockets if only a tape  were applied.

Tape

A sufficiently wide width of Petrotape shall then be  applied over the whole coupling or flange overlapping by about 25%.  The  tape is then smoothed by hand following the contour of the joint, thus  eliminating any air that may be trapped underneath the tape.
 

Plastic

An outer layer of layflat sheeting of sufficient width to cover the whole  joint is then applied over the tape with about a 50% overlapping of the  ends.  Each side of the plastic is then secured to the joint by using the  self adhesive securing tape which is wrapped around the plastic covering on  each side of the coupling.

 Back to Petrotape system  overview