The graphic below depicts a simple single line drawing of the circular geometry components that relate to most bending applications. When
specifying and detailing curved steel, there are a minimum number of components of this circular geometry that must be dimensionally specified. These
components can be specified in different minimum combinations that will allow the bender to generate other required information for processing. Some
examples of the combinations are as follows:
Radius and Arc: The most basic information required for a bender-roller to curve steel.
Chord and Rise: Both dimensions, taken from the same work points, allow the bender-roller to calculate radius and arc.
Radius and Degree/Angle: Degree/angle, in conjunction with bend radius, allows the bender-roller to calculate arc.
Radius and Chord: Both dimensions, taken from the same work points, allow the bender-roller to calculate degree/angle or arc.
Radius and Rise: Both dimensions, taken from the same work points, allow the bender-roller to calculate degree/angle or arc.
*Additional information for bending may be required for processing depending on fabricated member requirements. For example, if tangents are required, the
length of tangents needs to be provided separately from other dimensional components.
Produce to Customer Specifications
Ability to produce from customer supplied samples, drawings, fixtures or templates.
How to Order:
Specify tolerances to be held on part shape
Send drawings or print samples, if available
Material, including alloy or temper
Outside diameter (OD) and wall thickness (WT)
Centerline radius (CLR)
Minimum straight bend between tangent points (ST)
Maximum bend angle (BA)
Formula to determine material required:
Degree of bend x radius of bend x .01745 + all straight material
90 degree bend, 6" radius, with 12" tangent on each end,
90 x 6 x .01745 = 9.423" + 24" = 33.423" total material length
*Distortion estimates and samples provided upon request to eliminate any uncertainty.