supply of 1) bulk head elbow with conical seating 3/4 , bulk head elbow with conical seating 3/4 od x m26 x 1.5 (m) drawing no.:- icf/std-3-5-113 , alt-c item-1. mat. spec.- icf/md/spec-166 rev-04, amendment-2, or latest [ warranty period: 48 month s after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] , bulk head elbow of size 3/4 od , as per drg no.icf/std-3-5-117, item no.1, alt b, mat. spec. - icf/md/spec-166 rev-04, amendment-2, or latest [ warranty period: 48 months after the date of delive ry ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]