procurement of security related items/systems as per directions of security agencies like 04 no. integrated tyre burster with boom barrier etc.- 1 steel work welded in built up sections/framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required.in gratings, frames, guard bar, ladder, railings, brackets, gates and similar works. (for further details refer sbd) 2 solid plastic tyre on steel rim minimum dia. 4 inch (for further details refer sbd) 3 painting with synthetic enamel paint of approved brand and manufacture to give an even shade. two or more coats on new work (for further details refer sbd) 4 lettering with black japan paint of approved brand and manufacture. (for further details refer sbd) 5 carriage of material by means of mt for steel for 50 kms (mt)