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Parabolic, elliptical and other non-circular bends are variable-radius bends, also known as multi-radius bends. The funicular form for a member resisting a uniform gravity load is defined by a parabola; therefore, many arches are shaped to a parabolic curve. Elliptical bends can be required where a curved plane interfaces with a skewed plane.
When bending materials to an elliptical or parabolic configuration the radius of the bent section will be changing throughout the arc (or bent section) and stay in one plane. Typically, a bending company would require various working points (rise locations) of the elliptical curve to successfully bend the section. For certain projects Albina will create a full-scale layout on the ground to QC / match the elliptically bent section. At times Albina will also use digital templates in conjunction with a sophisticated camera system to ensure the accuracy of the elliptical or parabolic bends. These methods identify where the part is within and potentially outside the agreed upon tolerances (working points).
Variable-Radius Bending of Beam/Wide Flange for a Pedestrian Bridge
Variable-Radius Bending of Pipe for Restaurant Roof Trusses
Variable-Radius Bending of Pipe for an Amphitheater Canopy
Variable-Radius Bending of Pipe for a Shopping Center Entry
Variable-Radius Bending of Square Tubing for a Recreational Facility
Variable-Radius Bending of Square and Rectangular Tubing for a Store Front
Variable-Radius Bending of Channel for a Parking Garage Entry
These rolled plates you processed for us had to be welded together for an exposed circular guardrail. We assembled the plates, ends lined-up, radiuses matched – the parts fit perfectly. Thank you and your team for your accuracy and performance.
Curved steel members don't just "come that way" from the mill. Curved steel members are produced from straight lengths of material and are bent per your specifications.
Albina Co., Inc. produces the highest quality curved steel products in the steel industry and provides the most reliable and professional customer service experience.
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