supply of insulated rail dolly with chain sling (engg item)insulated rail dolly with chain sling (engg item),insulated rail dolly with chain sling attachment for carrying rail & psc sleeper. insulated rail dolly made out of heavy duty mild steel pipe, suitable to carry the rail panels of all types & sizes from one site to another using mono running rails as the medium of movement. suitable insulation is also provided in the wheels of the rail dolly so that it can be used in the circuited tracks also. chain sling attachment as per attached rdso specification no. tm/sm/24, dated 25.11.1993. [ warranty period: 30 months after the dat e of delivery ] ]