Quality Strip Production Process (QSP)

The QSP is a mini mill process for the uniform and continuous production of coils from thin or medium-thickness slab.
In the process, reheating furnace and quantity of rolling mill-stands can be significantly reduced for producing thin strips from molten steel.
Steel Plantech’s QSP is capable of producing the highest-quality thin slab with superior casting speed compared to the other process of thin slab casters.

News List

18. Jan, 2022
Analysis of Molten Metal Surface Level Using Live Cameras – New Installation of Spco-MOLD VIEW for Casting Stabilization and Fully Automated Monitoring


  • 6m/min

Production Cost Reduction

  1. 1The continuous caster enables a maximum casting speed of Vc=6m/min (achieved a casting speed of 8m/min at our test facilities), and although compact, it achieves a level of productivity that is equal to regular continuous slab casters.
  2. 2The reduction in quantity of rolling mill-stands required and the smaller energy consumption made possible by coupling directly to rolling mills enables a significant reduction of facilities/production costs.
  3. 3The break-out prediction device (learning type) prevents breakouts.
  • peritectic quality

Product Quality Improvement

Steel Plantech’s quality strip production process (QSP) adopts parallel molds and utilizes liquid core reduction technology, to enable manufacturing of the world’s highest quality thin slabs.

  1. 1Slab sizes of between 60mm and 100mm in thickness and between 900mm and 1,650mm in width
  2. 2The liquid core reduction function makes it possible to change thicknesses during casting.
  3. 3Can be adapted for cold rolling mills, which require deep drawability.
  4. 4A dynamic secondary cooling system
  5. 5The use of a parallel mold provides superior casting surface quality.


Supplied To Country Capacity
  • Asia・Oceania
  • G-Steel (old Siam Strip Mill) Thailand 1str /machine×1 machine
  • North America
  • North Star Bluescope Steel (old North Star BHP) U.S.A. 1str /machine×1 machine
  • Nucor Steel Arabama (old Trico Steel) U.S.A. 1str /machine×2 machines

Technical Information

Liquid Core Reduction Technology

Hydraulic Oscillation System