supply and fitment of lever locking arrangement for isolating cock of b rake valve of vesda system as per rcf drg no mi008044 material specification as pe r drawing material test report required at the time of supply supply and fitment work should be done in coaching depot pryj and cnb depot total qty 297 coaches pryj depot 231 coaches cnb depot 66 coaches sample should be approved by co nsignee before bulk supply fitment warranty period 30 months after the date of delivery