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BOS 91: 2012 ed.2
P592.80
Modified poly (vinyl chloride) (PVC-M) pressure pipe and couplings for cold water services in underground mining ― Specification
Description
This Botswana Standard specifies the requirements for seven pressure classes of modified poly (vinyl chloride) (PVC-M) pipes of nominal sizes 50 mm to 500 mm (inclusive) and one class of coupling for the pipes (based in each case on maximum working pressure), suitable for the conveyance of non-potable water at temperatures between 5 °C and 50 °C for use in mines.