The original light gauge Lockformers:
The Pittsburgh Lock revolutionized the HVAC Industry in the late 1940’s and is still used today for its strength and ease in assembling ductwork.
The Model 20 and Model 20 SuperSpeed Pittsburgh rollforming machines have 5 forming stations with 2 forming positions. One inboard forming position forms the Pittsburgh lock and one auxiliary or outboard forming position has the capability of forming 1 of 3 different profiles. Forming speeds are listed in the chart above.
Standard with Lockformer® quality construction, these machines have motors; high precision needle-type bearings; heavy ¾” chassis plate; case hardened and ground roll shafts; and arc welded steel stands protected with Lockformer’s top-quality primer and paint finish. Alemite grease fittings are easily accessible from a central lubrication panel.