torude valmistamiseks kasutatav survekeevituse protsess/operatsioon, mille korral eelnevalt valtsimisega painutatud torude toorikud keevitatakse kokku servade kokkusurumise teel, pressure welding whereby the workpieces are heated in a forge and the weld is made by applying blows or some other impulsive force sufficient to cause permanent deformation at the interface
