Infrastructure projects handle large volumes of steel tube that can bend during transport, stacking and repeated service. A JITIZO straightener supports the project’s tube-processing stage by correcting compatible curvature and connecting sorting, inspection and subsequent surface treatment in a continuous workflow.
The project challenge
Manual correction varies with tube length, bend location and operator experience, making a stable processing rhythm difficult. The equipment workflow begins with sorting. Tubes within the machine’s diameter, wall, length and bend range enter straightening, while cracked, severely corroded, crushed or locally deformed tubes are separated for assessment.
Continuous multi-roll straightening
Staggered rolls apply repeated reverse bending to reduce residual curvature. Roll spacing, penetration, feed speed and tube rotation affect the result. The project team can establish settings for frequently processed sizes and recheck roll positions when a specification changes instead of copying the previous setup.
- Sort tubes by size and surface condition and inspect local damage.
- Measure the initial bend and set rolls, feed speed and guidance.
- Straighten continuously while monitoring tracking, marking, jamming and machine load.
- Measure straightness using the agreed method before approved tubes move to cleaning, coating or circulation.
Trials linked to project throughput
Acceptance checks more than whether a tube passes through the machine. Before-and-after straightness, size, initial bend, roll settings and feed speed are recorded together with ovality change, surface marking and continuous-feed stability. This establishes whether the machine matches the project’s main tube sizes and operating rhythm.
Safety checks before reuse
Straightening corrects geometry; it does not restore lost load capacity. Scaffold or structural tubes still require inspection for cracks, corrosion, crushing, weld damage and other weakening before reuse. Improved appearance after straightening is not a substitute for a competent structural safety decision.