Insulating materials
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ANTICORROSIVE SYSTEM OF PROTECTION OF LINEAR PART OF THE POLILEN PIPELINES
The insulating Polilen system represents anticorrosive system of protection of an external surface of underground steel pipelines in the so-called "barrier" way, based on prevention of processes of corrosion by drawing on the prepared (cleared) surface of the pipeline of a 3-layer sheeting:
1) TU 5775-001-01297859-95 NK-50 primer,
2) internal tape "Polilen" TU 2245-003-01297859-99 (1 or 2 layers),
3) external wrapper "Polilen-Ob" of TU 2245-004-01297859-99 (1 or 2 layers).
The primer of NK-50 represents the rubber-pitch filled composition dissolved in gasoline. It is applied on the prepared (cleared) pipeline surface on purpose: a) prevention of access of moisture to it, and b) formations of reliable coupling with an internal polyethylene tape. Thickness of drawing a layer of a primer (in a dry state) 0,05÷0,076 of mm. Time of drying 10÷15 minutes.
The internal insulating tape "Polilen" - the four-layer tape (a polyethylene basis + the 1st transitional layer + the 2nd transitional layer + a butylrubber adhesive layer) intended for isolation of a praymirovanny surface of steel pipes for the purpose of protection them from corrosion.
WRAPPER OF "POLILEN-OB"
The wrapper of "Polilen-0B" - is used in coverings as the top (protective) wrapping layer in anticorrosive systems for their protection against mechanical damages.
Also the wrapper "Polilen-Ob" of white color - is made for isolation of external part of speakers over the earth of pipelines.
TAPE "POLILEN"
The tape "Polilen" - the four-layer tape on the basis of termosvetostabilizirovanny polyethylene and butyl rubber made by method with - extrusions - is intended for isolation of an external surface at construction and repair of underground pipelines for the purpose of protection them from corrosion.
NK-50 PRIMER
The primer of HK-50 is intended for drawing on metal pipelines under polymeric insulating tapes for protection against corrosion of a metal surface of pipelines at an operation temperature to + 60 °C. The primer represents the rubber-pitch, filled composition dissolved in gasoline. The primer is applied in designs of insulating coverings of pipelines of the normal, strengthened and very strengthened types according to GOST P 51 164 - 98 complete with the tapes "Polilen" (thickness of 0,45 mm and 0,63 mm).