Cat. No. 73100005811: Suitable For 50 Nb Pipe Line.Connecting Flange Distance 150Mm Having Holesø 1 , Cat.No. 73100005812: Suitable For 80 Nb Pipe Line. Connectingflange Distance 185Mm Having Holesø 1 , Cat. No.73100005813: Suitable For 25 Nb Pipe Line. Connecting Padsize– M10 Thread, 4-Nos. At 72Mm , Cat. No.73100005814: Osr (Oil Surge Relay) With Alarm & Tripcontacts For Oltc. Osr-25Mm N. B, Sq. F Quantity: 37