45,000 litre, 2.86 x 7.00 x 2.25m deep Bulk storage tanks fabricated from 6mm thick mild steel plate with dish end to BS 799 Part 1 1952 Type B underground and installed complete with manhole, calibrated dip stick, sockets for inlet, outlets and air vent and holding down straps, pipeworks, fitting and all necessary accessories. The tanks shall be externally painted with two (2) coats of bituminous paint and its associated civil works for underground