supply of supply of bellow set made of meta aramid/para aramid.supply of bellow set made of meta aramid/para aramid.,supply of bellow set made of meta aramid/para aramid fabric with silicon rubber coati ng both side for rmpu for lhb eog/hog type ac coaches of indian railways consisting of 01 no. of s upply air bellow, 2 nos of fresh air bellows and 02 nos of return air bellows ducts as per icf drg no - icf/sk3-7-6-072 ( latest) type-i. the bellows shall be conforming to rdso specification no. rdso/ pe/spec/ac-0197-2020 ( rev-0). note : 1) test certificate from recognized laboratory for bellow mat erial shall be submitted 2)rdso approved source shall only be considered [ warranty period: 60 mo nths after the date of delivery ] ]