A device which stores materials in a defined amount so a new coil can be installed and then welded to the old coil ensuring a non-interrupted material flow to the roll forming machine.

An angular tolerance of ±1° are typical in the roll forming process. See tolerance types.

Stands for American Society for Testing and Materials.

Operations outside the main roll forming process such as prepunching, embossing, curving and coiling, and cutoff. See embossing, pre-notch/pre-punch press, and pre-notching.

B-Deck is currently the most popular and widely used panel for decking. Type B-Deck or Wide Rib is frequently used for several applications such as flooring, siding, and roofing. The two main types of [..]

The inside radius of a formed feature. The bend radius should be equal to, or greater than, the material thickness. A small bend radius can create fracturing at the bend due to the natural thinning th [..]

Changing the shape of metal sheet using successive pairs of forming rollers. Bending does not change the thickness of the metal except at the bend radius where a slight thinning occurs. Generally appl [..]

A blanking press is punch press used in a multi-step forming process. The blanking press forms a rough shape which then is subjected to one or more secondary forming processes to produce a finished co [..]

A blind corner is a bend in a roll formed piece that cannot be handled by direct roll contact.

Bow is the variation from a straight line in the vertical plane of a roll formed piece. It can be either cross bow or longitudinal bow. See camber, curve and twist.