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Precision Flanging Machine

The precision RAS 21.20 has a unique automatic sheet guide that helps the operator guide the part through the machine to reduce errors and provide a consistent flange height. The flanging machine can handle up to 16ga mild steel material and within that range form different gauges of stainless, galvanized, and aluminum.

The unique design of RAS machines makes them last for years without requiring any maintenance. RAS proudly stands behind our 1-year parts and labor warranty, and our readily available parts are stocked in-house.

RAS Flanging Machine Highlights

  • Quick turn-up of flanges on straight, round and curved duct segments
  • Standing seam for joints with Pittsburgh seam
  • Cam standing seam for  joints with snap-lock seam
  • Attachment for cam standing seam cuts and pierces the cams
  • Pre-bending station with adjustable stop
  • Infinite adjustment for sheet thickness from 0.5 to 1.5 mm
  • Spring steel insert in the machine table increases longevity
  • Automatic sheet guiding system for flange heights (8 or 10 mm)
  • Infinite speed for high productivity and safe material handling
  • Configuration for stainless steel air ducts available

RAS Flanging Machine Applications

RAS Systems Flanging Machine 21.20 is ideal for forming on round duct checks or round sheets of metal within the following industries:

  •  Agricultural
  • HVAC
  • Mechanical
  • Roofing and architectural shops

RAS Flanging Machine 21.20 excels forming on round duct checks or round sheets of metal within the agricultural, HVAC, mechanical, roofing and architectural markets.


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