Internal Welding Machine
The Internal Welding Machine is used for lining up, and internally holding two sections of pipe in position, and applying the root bead.
A precision ring mechanism ensures precise tracking of the wire drive system with the precision cut land of the pipe, while the clamping shoes hold the pipe firmly in place.
The root bead is produced utilizing six to eight wire feed systems, depending on the pipe diameter. Welding is carried out in the vertical down position.
Joint-to-joint travel time is 12 to 17 seconds for 24-metre long pipe. Move and set-up time for the Internal Welding Machine varies with operator skills but is generally 1.5 to 2 minutes. This gives a weld-to-weld cycle time of 2.5 to 3.5 minutes. Only one operator is required to apply the internal root bead regardless of diameter.
Copper Backup Clamps
Link to CBU Brochure
The Copper Backup Clamp is used for lining up, and internally holding two sections of pipe in position, while supplying a backing for the weld pool, while the root bead is applied externally.