Is used: Oil and gas industry

Polymer-bitumen rapes, heat shrink tapes

Polymer-bitumen rapes are to be used for wrapping the coating during en route capital repairs of the insulation coating (re-insulation) of gas pipelines with a diameter of up to 1420 mm inclusive and a transported product temperature of +35 maximum.
Ratio, measurement unit Standard as per Technical Specifications
LITKOR-NK-GAZPOLYKOR

DONRAD-GAZ, DONRAD-ARM

POLYLEN-OB
Plasticity on a beam, rounding radius = 10 mm, °, maximum -20 -20 -20 -
Adhesion to bitumen-polymer  coating, t= 20°, N/cm, minimum 10,0 10,0 10,0 -
Adhesion of overlapped tapes, t = 20°, N/cm, minimum 7,0 7,0 7,0 >7,0
Resistance of base tape rupture lengthwise, t = +23±2°, MPa, minimum 12,0 12,0 - -

Heat shrink tapes are to be used as a protective wrap for combined coatings based on bitumen-polymer mastics to protect main, infield and process pipelines. The tapes are rollsproduced by the extrusion method and are subject to relaxation (length shrinks) at 60 °.

Ratio, measurement unitStandard as per Technical Specifications
TERMA-LDRL-LPOLYTHERM
Rupture resistance, MPa, minimum 12 12 >12
Relative rupture elongation, %, minimal 200 200 >200
Electric strength, kW/mm, minimum 10 5 -
Lengthwise shrinkage, %, minimal at t = 140 ° 15 15-40 15-30
Relaxation, %, minimal at t = 60 ° 4 3-10 >4

 

 

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