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 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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