laying of 200 mm dia swg sewer line in place of existing 150 mm dia swg line from 12-1-1/b/18/27 to 12-1-1/b/18/1/3, satya nagar, c colony under lalapet section, sd-iii, oandm division no. vii.(as per g.o. ms no.59 dt:21.05.2018 only st contractors are el
