14211 GALVANIZED STEEL PIPES: Distribution pipe for potable water, internal and external installation shall generally comply with the requirements of BS 1387, medium gauge, having plain or threaded ends to BS 21.
Galvanized steel pipe fittings shall comply with BS 21.
14212 Ductile iron pipe for external distribution shall comply with the requirements of BS 4772 with flexible spigot and socket connections.
14213 UPVC pipes and solvent weld spigot and socket fittings for cold water shall comply with the requirements of BS 3505 and BS 4346, part 2 respectively.
14214 UPVC pipes and fitting for solvent cement weld for found surface drainage shall comply with the requirement of BS 5481.
14215 Precast concrete pipes for foul and surface drainage shall comply with the requirements of ESC D3. 326 and shall be cement jointed.
14216 Steel components, bolts and nuts shall be zinc coated complying with the requirements of BS 4921. Steel flanges shall comply with the requirements of BS 4504.
