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Precision QT Steel

QT Round Bars for Demanding Engineering Applications

JOTAIN supplies specification-driven bars, rods, and components with controlled hardness, straightness, and traceability for global OEMs.

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20-200 mmDiameter range
UT ReadyNDT available
GlobalExport projects
QT steel round bars
Steel bar processing
Finished QT rods

Application Families

Hydraulic, mining, wind, marine, automotive and oil & gas supply with full documentation.

Hydraulic cylinder rod

Hydraulic Cylinder Rod

QT, peeled, straightened, polished with tight straightness control.

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Wind power anchor bolts

Wind Power Anchors

Anchor bolts in strength class 8.8/10.9/12.9.

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Marine tie rod

Marine Tie Rod

QT bars with coating systems for harsh marine environments.

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Full-Process Capability

From billet selection to machining, forging, and coating, every step is tuned for consistency and export documentation.

Heat Treatment

Induction & furnace QT with mapping.

Machining

Turning, threading, grinding.

Forging

Open/closed die options.

Coating

HDG, zinc, paint, chrome.

Machined shaft
Precision screw rod
Motor shaft production
Engineered rod detail

Quality & Inspection

Hardness control, NDT, and dimensional inspection ensure consistent performance across global projects.

  • Hardness control & mapping
  • Ultrasonic testing (UT) and magnetic particle inspection
  • Straightness and dimensional inspection
  • Traceability & reports

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Chemical test
Fluorescent MT inspection
NDT inspection
Tensile testing

Ready for a Custom QT Solution?

Send grade, diameter, hardness, quantity, and destination. We respond with tailored specs and lead times.

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