procurement of grsp, 6 mm thick gr sole plate for 60 kg psc sleeper 60 kg uic rail drg no- t 3711 [ warranty period: 30 months after the date of delivery ] , manufacture and supply of 6 mm thick grooved rubber sole plate ( grsp ) for 1 in 8.5, 60kg fs to as per rdso drg. no. t-4865 alt. 6 with latest alteration if any and conforming to ir specification sl. no. t- 47-2020 [ revision-01 ] . note: list of grsps for each set are as per the latest rdso drawing as mentioned above. the term latest means any alteration / corrigendum / letter issued by rdso up to 30 days before the date of closing of e-tender. [ warranty period: 30 months after the date of delivery ] , grsp t-3711 [ warranty period: 30 months after the date of delivery ] , manufacture and supply of grsp for derailing turnout sleeper as per rdso drawing no. t-6068 with irs specification no. ( provisional ) rdso / m&c / rp-201 / 2020 ( revison-1.0 ) and latest corrigendum before 10 days of tender opening. [ warranty period: 30 months after the date of delivery ] , grsp for sej 52 kg ( t-4159 ) [ warranty period: 30 months after the date of delivery ]