supply of supply of bellow duct with meta / para aramide fabric bellow duct. , supply of bellow duct with meta / para aramide fabric bellow duct for lhb ac c oaches (eog type ac coaches) conforming to rdso specification no. rdso/pe/spec/ac-0197-202 0(rev-0) scope of supply per rmpu consisting of 1 no. of supply air bellow, 2 nos. of fresh air bellows and 2 nos. of return air bellow duct with metallic frames as per rdso drg. no rdso/ pe/sk/ac/0069-2004 (rev-3). material to be procured from rdso approved suppliers .firm must have to submit the test report, approval copy of rdso and warranty certificate for 60 mon th as per rdso specification no rdso/pe/spec/ac-0197-2020 (rev-0) [ warranty period: 60 months after the date of delivery ] ]