manufacture and supply of isi marked upvc pipe size 160mm nominal dia, 2.5 kg/cm2 working pressure with 1 no. pvc socket size 160mm nominal dia under 4.0 kg/ cm2 working pressure for each 6mtr length of pipe & solvent cement to join it conforming to is: 4985-2000, is: 10124- 2009 & is: 14182-1994 respectively, with latest amendments if any as per departmental technical specifications stipulated in tender for use in water distribution system of state tubewells.