Procurement and supply of water supply items - pvc pipe 20mm (10kgf/sqcm pressure rating) isi marked (supreme/finolex/ocean), pvc pipe 25mm (10kgf/sqcm pressure rating) isi marked (supreme/finolex/ocean), pvc pipe 32mm (10kgf/sqcm pressure rating) isi marked (supreme/finolex/ocean), pvc pipe 40mm (1 (EXPIRED)