Raw Material Inspection

Before production begins, we thoroughly inspect and verify the chemical and physical properties of raw materials. Only certified, high-quality materials that meet international standards are approved for use.

In-Process Monitoring

Throughout the manufacturing process, our engineers conduct real-time inspections to monitor critical parameters—ensuring consistency, precision machining, and adherence to design specifications.

Ultrasonic Testing (UT)

Ultrasonic testing is conducted to detect internal flaws, cracks, or inclusions in the roll. This non-destructive technique helps ensure the structural integrity of each roll before it moves to the next stage.

Hardness Testing

We use Brinell or Rockwell hardness testing to verify the hardness levels of our rolls. This ensures optimal wear resistance and performance under high pressure and temperature conditions.

Dimensional Accuracy Check

Every roll undergoes a comprehensive dimensional check using precision instruments and gauges to ensure exact tolerances as per customer specifications.

Surface Finish & Visual Inspection

Our quality control experts meticulously inspect the surface finish for any imperfections, scoring, or unevenness that could affect roll performance.

Our Commitment to Quality

Every roll that leaves our facility is a testament to the expertise of our engineers, the accuracy of our processes, and the pride we take in delivering reliable products. With a dedicated Quality Control Department and a culture of continuous improvement, National Rolls Corporation ensures that our clients—across industries and continents—receive rolls they can trust. When quality matters, testing makes the difference. And at National Rolls Corporation, we test to ensure you perform