supply of air brake swivel flange for 20 mm (nb pipe) with socketair brake swivel flange for 20 mm (nb pipe) with socket,air brake swivel flange for 20 mm (nb pipe) with socket to rdso drg. no. sk-85187 alt-4, ite m-2 and 4, alternative material to specification is 2062/2011 e250c is acceptable as per specn. air brake s wivel flange for 20 mm (nb pipe) with socket to rdso drg. no. sk-85187 alt-4, item-2 and 4, alternative ma terial to specification is 2062/2011 e250c is acceptable [ warranty period: 30 months after the date of del ivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: m ax 8 lacs ] ] => limited