supply of octagonal boom (of total 4 sections )fabricated from gi sheets as per rdso approved drawing no rdso/s/116000 suitable for heidz makeoctagonal boom (of total 4 sections )fabricated from gi sheets as per rdso approved drawing no rdso/s/116000 suitable for heidz make,octagonal boom (of total 4 sections )fabricated from gi sheets as per rdso approved d rawing no rdso/s/116000 suitable for heidz make electrically operated lifting barrier(eolb). boom must come in two sections which can be combined together. boom must be painted with alternate yel low and black bands of 300mm. [ warranty period: 30 months after the date of delivery ] ]