ISS now runs a 4-roll plate roller at our Te Rapa workshop. It takes plate from 8mm to 40mm thick and up to 3000mm wide, which covers most pipe, tank and vessel work.
The plate is pinched between two motorised central rolls. That lets us pre-bend both ends and roll the full body in one pass, in a single direction, and the plate stays square rather than slipping through the cycle. It is a straightforward machine to run, and it suits NC and CNC control.
The machine is rated from 8mm to 40mm thick and up to 3000mm wide. What is achievable on any given job depends on three things: how wide the plate is, the finished diameter, and the yield point of the material.
As a guide, a 3000mm wide plate in 260 N/mm2 material rolls to 20.9mm. Narrow that plate to 1000mm and the same material goes to 36.2mm. The spec sheet carries the full chart: four material grades from 260 to 430 N/mm2, widths from 1000mm to 3000mm, and diameters from 330mm to 3000mm, with pre-bend and bending thicknesses for each.
