Anticorrosive protection of pipelines
ANTI-CORROSION BITUMEN AND POLYMER SYSTEM «BIZOM-ARM»
ANTI-CORROSION BITUMEN AND POLYMER SYSTEM «BIZOM-ARM»
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-ARM» consists of «BIZOM-ARM» tape and a primer «OZOM-PRIMER».
«BIZOM-ARM» 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-ARM» 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 | – | 1,0; 1,5 |
Adhesion of tape to the primed steel surface, kg/cm, at least | +20 °C | 3,5 |
APPLICATION
«BIZOM-ARM» 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-ARM» 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-ARM» 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-ARM» 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-ARM» system grades «S-UV» and «W-UV» correspond to «UV» class — the coating is fit for service during long-time UV action.
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