Bitumen-Polymer Tape

ANTI-CORROSION BITUMEN AND POLYMER SYSTEM «BIZOM»

ANTI-CORROSION BITUMEN AND POLYMER SYSTEM «BIZOM»

Intended for protection against underground and atmospheric corrosion of external surfaces of major steel gas-and-oil pipelines and product conduits to 1220 mm dia. inclusive when their construction and repairs.

The anti-corrosion bitumen and polymer system «BIZOM» consists of «BIZOM-TAPE» and a primer «OZOM-PRIMER».

«BIZOM-TAPE» is a self-adhesive roll material coated with a layer of bitumen mastic applied onto the PVC tape, the mastic is protected with anti-adhesion film in order to prevent sticking of tape turns in a roll.

«OZOM-PRIMER» is a liquid homogenous composition made on the basis of bitumen, phenol formaldehyde resin and solvents.

«BIZOM» system is classified by grades: «S» — summer, «W» — winter, «S-UV» — summer and UV-protected, «W-UV» — winter and UV-protected.

PHYSICAL AND MECHANICAL PARAMETERS

Descriptions Measurement conditions Values
Tape thickness, mm  +20 °C 1,6 + 0,1
2,1 + 0,1
Tape width, mm  +20 °C 450 ± 3
225 ± 3
150 ± 3
Backing tape thickness, mm, at least  +20 °C 0,6 + 0,03
Mastic layer thickness, mm, at least +20 °C  1,0; 1,5
Adhesion of tape to the primed steel surface, kg/cm, at least +20 °C 3,5

APPLICATION

«BIZOM» grade «S» and grade «S-UV» are intended for mechanized (with insulating machines, devices) and manual application on a pipeline surface at the ambient air temperature from +40 °С to +10 °C.

«BIZOM» grade «W» and grade «W-UV» are intended for mechanized (with insulating machines, devices) and manual application on a pipeline surface at the ambient air temperature from +20 °С to -20 °С.

According to physical and mechanical and protective properties «BIZOM» system corresponds to «В» class that is a very strong coating as per DSTU 4219-2003.

According to temperature resistance and depending on the maximum operating temperature «BIZOM» system corresponds to class «50» — this system is resistant at a pipeline temperature to +50 °С as per DSTU 4219-2003.

According to resistance under special operating conditions «BIZOM» system grades «S-UV» and «W-UV» belong to «UV» class — the coating is fit for service during long-time UV action.

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