Strongsville, Ohio, USA, July 21, 2014 – Rafter Equipment Corporation has shipped a RT-5500 weld squeeze box for a major North American OCTG pipe producer. The box is part of an upgrade to the customer's existing HFI pipe mill. It is sized for up to 7.000" OD x 0.375" wall (177.8 mm OD x 9.5 mm wall) HSLA steel pipe. The design includes motorized push-on-center squeeze roll adjustments, linear displacement transducers, high-capacity tapered roller bearings within the roll tools, and a removable head roll assembly for quick-change.
In addition to the weld box, the upgrade included a new single-sided turkshead straightener. The turkshead unit included 2-axis remote motorized adjustment with linear displacement transducers.
Finally, the upgrade included a sizing mill drive train upgrade. The existing single-motor, three-gearbox arrangement was replaced with three (3) individual motor drive units. The drive electrics were designed to integrate with the existing line electrics.
Rafter Equipment Corporation is a manufacturer of tube mills, pipe mills, roll forming machines, cutoff machines, and other related tube and pipe mill machinery. Additional services include PROACTIVE maintenance, mill refurbishing, design engineering, and contract manufacturing. Originally started in 1917, the Rafter name is known for reliable, high-quality tube mill and roll forming equipment.
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