GLOSSARY
by JORGENSON METAL FORMING & ROLLING INC.

A B C D E F G H I K L M N O P R S T U V W X Y Z

• Angle rolling may be used to form or bend Angle iron into curves at specific radiuses, to form arcs and or rings.
• Angle rolling can be done with the leg in, which is often times referred to as rolling the “hard-way”.
• Angle rolling can also be done with the leg out, which is commonly referred to as rolling the “easy-way”.
• Angle rolling may also be done with both legs in, and angle rolling may also be done with both legs out.
• Angle Rolling can be done on unequal leg angle iron as well. The end user should specify what leg needs to be in or out after rolling.

• Angle rolling may be used to form or bend Angle iron into curves at specific radiuses, to form arcs and or rings.
• Angle rolling can be done with the leg in which is often times referred to as rolling the “hard-way”.
• Angle rolling leg-out – A metal forming process used to form angle iron into curves and or radiuses.
• Angle rolling may be used to form or bend Angle iron into curves at specific radiuses, to form arcs and or rings.
• Angle rolling can be done with the leg out which is commonly referred to as rolling the “easy-way”.

• Angle rolling may be used to form or bend Angle iron into curves at specific radiuses, to form arcs and or rings.
• Angle rolling can be done with both legs out.
• Angle rolling legs-in – A metal forming process used to form angle iron into curves and or radiuses.
• Angle rolling may be used to form or bend Angle iron into curves at specific radiuses, to form arcs and or rings.
  Angle rolling can be done with both legs in.

Arc – The curved portion of the rolling or bending of materials such as pipe, tube, beam and channel.

Arc length – The length of the curved portion of the rolling or bending of materials such as angle, beam, square and rectangular tube

Architecturally exposed – Refers to when the processed material is going to visible or exposed in the structure. Sometimes architecturally exposed can mean that it will be painted, coated or plated, but still visible.

Architecturally non-exposed – Refers to when the processed material is not going to be visible or exposed in the structure.
Sometimes architecturally non-exposed can mean that it will be used as a support or brace that is covered or not visible

• Beam rolling may be used to form or bend metal beam into curves at specific radiuses, to form arcs and or rings.
• Beam rolling can be done with the flanges facing horizontally, which is often times referred to as beam rolling the "easy-way".
• Beam rolling can also be done with the flanges pointed up or down, this is generally referred to as beam rolling the "hard-way on edge".

• Beam rolling may be used to form or bend metal beam into curves at specific radiuses, to form arcs and or rings.
• Beam rolling can be done with the flanges pointed up or down, this is generally referred to as beam rolling the "hard-way on edge".

• Bending is sometimes used as another word for rolling. Both refer to the metal forming processes in which materials such as sheet metal, plates, and structural shapes are formed to a specific curve, radius, degree or angle.
• Bending of metal sheets and plates can be used to form custom shapes such as formed channels, angles, and or Z-sections.
• Bending may be used to form tubes and or pipes to specific degrees or angles.

Bend radius – The radius of the arc normally taken from the centerline of the rolled or bent material such as plate, flat bar, round bar, channel, beam and tube.

Bevel – A type of end preparation done to rolled or bent pipe and tube

• Channel rolling may be used to form or bend metal channels into curves at specific radiuses, to form arcs and or rings.
• Channel rolling can be done with the flanges pointed in, which is often times referred to as channel rolling the "easy-way flanges in".
• Channel rolling can also be done with the flanges pointed out, which is generally referred to as channel rolling the "easy-way flanges out".
• Channel rolling can also be done with the flanges pointed up or down, this is generally referred to as channel rolling the "hard-way on edge".

• Channel rolling may be used to form or bend metal channels into curves at specific radiuses, to form arcs and or rings.
• Channel rolling can be done with the flanges pointed in, which is often times referred to as channel rolling the "easy-way flanges in".
• Channel rolling legs-out – A metal forming process used to form metal channel into curves and or radiuses.
• Channel rolling may be used to form or bend metal channels into curves at specific radiuses, to form arcs and or rings.
  Channel rolling can be done with the flanges pointed out, which is generally referred to as channel rolling the "easy-way flanges out".

Degree – Then angle in degrees to which the material such as tube rolling, pipe rolling, channel rolling or beam rolling is bent.

I.D. – Abbreviation for “Inside Dimension”, used in reference to the inside measurement of a specific fabricated part such as a structural shape or bent part. When rolling a tube or other structural shape to a complete ring, or circle, this measurement is taken from one inside edge of the material to the opposite inside edge. When forming a bent custom formed channel on the press brake, the measurement on the inside from one formed leg to the inside edge of the opposite formed leg is referenced as the I.D.

Minimum Tangent – The minimum amount of straight section required for pipe rolling, tube rolling, beam rolling and channel rolling.

O.D. – Abbreviation for “Outside Dimension”, used in reference to the outside measurement of a specific fabricated part such as a structural shape or bent part. When rolling a tube or other structural shape to a complete ring, or circle, this measurement is taken from one outside edge of the material to the opposite outside edge. When forming a bent custom formed channel on the press brake, the measurement on the outside from one formed leg to the outside edge of the opposite formed leg is referenced as the O.D.

Ovality – The controllable amount of distortion in pipe from its original shape during the rolling and bending process.

• Pipe bending is more commonly used to form a smaller, tighter radius that causes a more defined turn like that in an elbow.
• Pipe bending can sometimes used as another word for pipe rolling. Both refer to the metal forming processes in which pipes are formed to be used as arcs, curves, or Z-sections.

Pipe rolling – Forming of pipes into arcs and curves at specific radiuses using a metal rolling process. Pipe rolling generally differs from Pipe bending in that the curves are more gradual and form larger arcs and or rings. Pipe bending is more commonly used to form a smaller tighter radius that causes a more defined turn like that in an elbow.

• Plate bending is more commonly used to form a smaller, tighter radius that causes a more defined turn like that in an elbow.
• Plate bending can sometimes be used as another word for plate rolling. Both refer to the metal forming processes in which plates are formed to be used as arcs, curves, or Z-section

Plate rolling – A metal forming process that takes metal plates and forms them to a specific curve or radius.
Rolling of metal plates can be used to form cylinders, shells, tanks, and cones.
Plate rolling generally differs from plate bending in that the curves are more gradual and are more concerned with a curve or radius, rather than an angle or degree.

Press brake bending – A metal forming process using a press brake to form metal sheets and or plates to a specific degree or angle. Bending of metal sheets and plates can be used to form custom shapes such as formed channels, angles, and or Z-sections. Press brake bending allows you to form custom shapes that might not be available as a standard shape and or size.

Tube bending – A metal forming process used to form square or rectangular tubes to a specific degree or angle.
Generally tube bending differs from tube rolling in that it is more concerned with forming the square or rectangular tube to a specific angle or degree, rather than a curve or radius.

Wall thickness – The thickness, in inches, of the walls of the material such as pipe rolling and pipe bending or tube rolling and tube bending.

Disclaimer: The terms and or explanations given in the above examples may or may not represent the exact definition. They are explanations for terms that are commonly used in our industry and are intended only for minor educational purpose so that our customers may better communicate with us when inquiring about our capabilities and processes. These definitions have been sharpened after many years of questions and explanations with our customers. We are not suggesting in any way that these definitions should be used for any technical application.