Description
Rings of wells are intended for the device of round wells of sewer, water supply and pipeline systems.
Frost resistance is not lower than F50.
Water tightness is not lower than W2.
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R_R Ў 7.9
Rings of wells are intended for the device of round wells of sewer, water supply and pipeline systems.
Frost resistance is not lower than F50.
Water tightness is not lower than W2.