FIELD: part joining, namely, connection of large diameter tubes. SUBSTANCE: tool includes pressing ring in the form of members jointly connected one with another and carrying working shoes. Said members have means for supporting locking device for their drawing together to closed ring. Said pressing ring has at least one parting between adjacent members. At least one connecting link provides temporary connection of said adjacent members. Said link has variable shape, that may be changed when said members are drawn together. Said supporting means are arranged onto adjacent members in parting zone. EFFECT: improved design. 14 cl, 6 dwg
