supply of composite grooved rubber sole plates 10 mm thick for wider psc sleepers to use with 60kg (uic) & 52kg rails to rdso drg no t-8747, with latest alteration if any.composite grooved rubber sole plates 10 mm thick for wider psc sleepers to use with 60kg (uic) & 52kg rails to rdso drg no t-8747, with latest alteration if any.,composite grooved rubber sole plates 10 mm thick for wider psc sleepers to use with 60kg (uic) & 52kg rails to rdso drg no t-8747, with latest alteration if any, specification: irs t 55-20 23 with latest alterations. the term latest alterations wherever used will mean the alteration up to 5 days before actual date of opening of tender. [ warranty period: 96 months after the date of deliver y ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]