Supplying all materials at site including pipes, specials, labors, tools and tackles etc. for laying and jointing of MS pipe for conveying main as per latest IS specification. Lowering of MS pipes and specials in trenches up to a depth of 3 m below GL. Laying and jointing the same inside the trench/ over the ground by means of electric arch welding (spirally welded) using standard electrodes as per latest IS specification including earth work in excavation in all kind of soil so as to give one meter average cover over the pipe with disposal of excavated earth within initial lead and lift with disinfection of pipes, testing of pipes against 60 M water head etc. to protect against corrosion pipes are given epoxy lining or hot applied coal tar/ asphalt lining or rich cement mortar lining at works or in the field by the centrifugal process. The outer coating for pipe may be in cement sand guniting or hot applied coal- tar asphaltic enamel reinforced with fibre glass fabric yarn as per CPHEEO manual of water supply and treatment all complete job as per standard specification. 600 mm dia (minimum thickness- 6.40 mm)