bids are invited for concertina coil with 1050 mm dia - punched tape concertina coil (including spike handle) with 50 turns and dia 1050 mm having a 2.6 mm dia core wire of high carbon spring steel of high tensile strength. the punched tape and core wire are electrogalvanised to provide protection against outdoor exposure. the punched tape is machenically crimped over the cover wire and then formed in to a coil at various parts of the peripheryof the coil steel clips connect the individual turns of the coil to each other so that it opens up like an accordion. the width of barbed as 9mm and spacing of clips 23.5 mm to 24.5 mm c/c the weight of each coil will be 15.2 +5% kgs without packing material and coil length 12 mtr when opened up. each coil wound with bituminized hession cloth for providing protection coating as per specification no ind/eng/prov/1245 is for raw material and drawing imga 0112/b (sheet 1 of 2) , impd-1821/b and impd-1822/b.(delivery at pallanwala) , punch tape 50m spool - w8/5660-000008 spool plastic with punched tape 50 mtr as per specification no cqae/5660/1515/2001 &drg no imga-0113/a, imsa-0289/a, impd-1818/a, impd-1819 and impd-1820 and galvanized should be as per is-209 (delivery at pallanwala) , baby concertina coil with 610mm dia - punched tape baby coil (including spike and handle) with 50 turns and dia 600mm, having a 2.6mm dia core wire of high carbon spring steel of high tensile strength.the punched tape and core wire are electro galvanized to provide protection against out door exposure.the punched tape is mechanically crimped over the cover wire and then formed into a coil at various parts of the periphery of the coil steel clips connect the individual turns of the coil to each other so that it opens up like an accordion.the weight of each coil will be 9.5+5% kgs without packing material and coil length 7.5 mtr when opened up.each coil wound with bituminized hession cloth for providing protective coating as per specification no ind/