Double Sheet or Double Blank Detectors are required in blank destacker, sheet feeder, robot loader, blank washers, blank lubricator, magnetic conveyors, or in the centering station to provide die protection for stamping presses.  Hidden parts detection enable poka yoke verification in body-in-white production. When manufacturing tailor welded blanks - TWBs - undetected double blanks can cause substantial tool damage. Roland Double Metal Detectors for steel, aluminum, or stainless steel blanks are therefore an important precondition for press automation. Fanning magnets can be helpful in the process. Improved gap-tolerant single probe double sheet sensors can be mounted directly into vacuum cups. Non-contact dual head systems are especially well suited for roll forming application,  magnetic transfers as well as mechanical rail transfers.
Roland Double Sheet Detectors have proved their reliability in thousands of installations worldwide.

Pipe bender and tube bender rely on the exact positioning of the tube weld seam prior to the tube bending process for the production of repeatable geometries of the bended tubes. Repeated the geometries in automotive components are a must for automated production in the assembly shop but also for producing hydroforming components such as engine cradles, exhaust manifolds, side members or roll bars. Other processes that require precise positioning of the tube seam can be tube end forming, tube cutting, tube piercing, tube notching and tube punching.

Other applications are the detection and elimination of welds after coil joining in decoilers, blanking presses, or cut-to-length lines thus enabling the use of lower cost welded coils. A related application is the detection of  weld seams in wires and rods and cable connections in the extrusion process. 

A special application of weld seam location is the positioning of 55 gallon drums or similar containers for silk screen printing purposes. 

In continuous production processes it is necessary to detect defects and quality problems online during production and initiate actions to eliminate these problems.  For this purpose Roland Electronic has developed inspection systems based on the eddy current principle as well as magnetic inductive methods.  The eddy current systems are primarily used for detecting defects in the semi-finished materials such wires, rods, cables, tubes and coils. 
Magnetic inductive methods are being used in the tried and proven Steel Cord Inspection System for the detection of so-called spacing faults when cutting and splicing steel cord material for the production of steelbelted tires.