Straightening Machine for Rolling Mill

Heavy-Duty Straightening Machine for Bars, Tubes & Section Steel

The Straightening Machine for Rolling Mill is an essential finishing equipment used to correct bending, camber, and ovality of steel products after rolling. It is widely applied in bar rolling mills, seamless tube mills, section steel production lines, and wire rod mills, ensuring finished products meet strict straightness and dimensional requirements.

By applying controlled reverse bending through multiple straightening rolls, the machine improves product straightness, surface quality, and dimensional stability, making it a key component of modern rolling mill finishing lines.

Applications

The straightening machine is suitable for straightening:

• Hot-rolled and cold-rolled steel bars

• Seamless steel tubes and pipes

• Welded steel pipes

• Section steels such as angle steel, channel steel, I-beam, and H-beam

• Alloy steel and special steel products

Typical application positions include:

• After rolling mill or stretch reducing mill

• After cooling bed

• Before cutting, bundling, and packaging

Working Principle

The Straightening Machine for Rolling Mill works by passing the steel product through a series of arranged straightening rolls. These rolls apply controlled bending forces that exceed the material’s elastic limit, eliminating internal stress and correcting curvature.

Depending on the product type, straightening rolls can be arranged horizontally, vertically, or in a combined configuration to achieve full circumferential straightening with high accuracy.

Machine Types

According to product and layout requirements, the machine can be supplied as:

• Horizontal straightening machine

• Vertical straightening machine

• Combined horizontal & vertical straightening machine

• Two-roll, multi-roll, or hyperbolic straightening machine

Customized designs are available to match rolling speed, product size, and steel grade.

Key Advantages

• High Straightening Accuracy
  Ensures excellent straightness and dimensional consistency.

• Wide Size Range
  Suitable for various diameters, wall thicknesses, and section sizes.

• Strong Structure & Stability
  Heavy-duty frame minimizes vibration during operation.

• High Automation Level
  PLC-controlled adjustment and automatic setting available.

• Improved Surface Quality
  Reduces scratches and improves surface smoothness.

• Long Service Life
  Wear-resistant straightening rolls ensure low maintenance cost.

Main Components

• Machine frame and base

• Straightening rolls and roll boxes

• Adjustment and pressure system

• Drive and transmission system

• Electrical control system

• Safety protection devices

Manufacturing Process

• Frame fabrication and stress relief

• Precision machining of key components

• Assembly and alignment

• Electrical and control system integration

• Trial straightening and load testing

• Final inspection and packing

Quality Assurance

• Straightness measurement

• Dimensional accuracy testing

• Continuous operation testing

• MT and size inspection reports available

Packing & Delivery

• Export-standard wooden cases or steel frames

• Anti-rust and moisture-proof packaging

• Suitable for sea and land transportation

• Delivery time: 30–50 days, depending on machine configuration

Why Choose Our Straightening Machine for Rolling Mill

• Extensive experience in rolling mill equipment manufacturing

• Customized straightening solutions for different steel products

• Stable performance under continuous industrial operation

• Competitive investment cost and fast ROI

• Professional technical support and after-sales service

Our Straightening Machine for Rolling Mill helps steel producers achieve high product straightness, reduce rejection rates, and improve overall production efficiency.