Tender For supply of cat. no. 73100005811: suitable for 50 nb pipe line. connecting flange distance 150mm having holes 1 , cat. no. 73100005812: suitable for 80 nb pipe line. connecting flange distance 185mm having holes 1 , cat. no. 73100005813: suitable for 25 nb pipe line. connecting pad size m10 thread, 4-nos. at 72mm , cat. no. 73100005814: osr (oil surge relay) with alarm & trip contacts for oltc. osr-25mm n. b, sq. f