What metals can be processed in a hot rolling mill?

Hot rolling mills process both ferrous and non-ferrous metals. Steel and stainless steel are the most common, but hot rolling mill equipment is also used for aluminum, copper, titanium, and specialty alloys. Butech Bliss manufactures and services hot rolling mills for producers across all of these material types.

What is the difference between a hot rolling mill and a cold rolling mill?

A hot rolling mill operates above the metal's recrystallization temperature, which allows for greater deformation per pass and is ideal for producing thicker, structural products. A cold rolling mill operates at or near room temperature and produces thinner material with tighter tolerances and a smoother surface finish. Many producers use both processes in sequence.

What industries use hot rolling mill equipment?

Steel hot rolling mill equipment serves a wide range of industries, including automotive, aerospace, construction, shipbuilding, energy, and heavy machinery manufacturing. Butech Bliss supplies hot rolling mills and components to steel mills, service centers, and toll processors worldwide.

Can you modernize an existing hot rolling mill rather than replacing it?

Yes. Butech Bliss specializes in modernizing existing hot rolling mills with upgrades like hydraulic roll force systems, automatic gauge control, roll bending, and faster roll-change configurations. In many cases, a targeted modernization program delivers significant production improvements at a fraction of the cost of a full replacement.

Skin Pass Mills for Metal Surface Finishing

135 Years of Expertise

Skin-Pass Mills

The Butech Bliss temper or skin pass mill solution uses the trusted Bliss technology supplied to mills throughout the world.

A coil can clear every gauge and flatness check and still show stretcher strain marks the moment a customer stamps it. Our skin-pass mill technology applies a light final pass that suppresses that yield point extension while sharpening surface finish and flatness before the coil ships. Butech Bliss has supplied more than 70 of these systems in two-high and four-high configurations.

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Cold mill facility in Decatur for advanced steel processing

Butech Bliss Skin-Pass Mill Technology Trusted by Mills Worldwide

Flatness left over from upstream leveling or rolling can still surface as wave, buckle, or crossbow once a coil reaches the customer’s line. A leveling equipment pass handles the bulk of that correction upstream, and the skin-pass rolling mill removes what remains at the very end of the process. On the surface side, a controlled roughness profile from the work rolls gives automotive and appliance producers the exact texture their paint or coating process needs.

Temper Mill Upgrades

Temper mill installations feature the reliable and fast-acting Butech Bliss hydraulic roll force cylinders that are the industry standard. With more than 70 temper mills in our history, why not let Butech Bliss be your temper or skin-pass mill supplier?

Typically these upgrades include:

Conversion to hydraulic roll force system
Work roll bending with shape measurement and control
Quick work roll change

Mill control and drive upgrade
Wet temper systems
New auxiliary equipment

Hydraulic Roll Force Upgrades That Modernize Temper Mills

Temper mill installations run on hydraulic roll force cylinders built to the same industry standard used across the Butech Bliss line, and converting an older mill to that system is usually the starting point for an upgrade project.

Work roll bending with shape measurement and control tightens flatness, quick work roll change systems cut changeover time between passes, and updated mill control and drive packages keep the line at current production targets.

Wet temper systems and new auxiliary equipment round out the path for mills that need them.

Skin-Pass Mill FAQs

What is a skin-pass mill?

A skin-pass mill applies one very light rolling pass to the finished strip, using minimal reduction to correct surface finish and flatness rather than change gauge.

What is the difference between a skin-pass mill and a temper mill?

Butech Bliss uses the terms interchangeably, since both describe a mill built for one light finishing pass rather than the multiple heavy-reduction passes used in cold rolling.

How much reduction does a skin-pass mill apply?

A skin-pass typically reduces thickness by half a percent to three percent, just enough to correct shape and surface without meaningfully changing gauge.

What industries use skin-pass mills?

Skin-pass mills serve steel and specialty alloy producers supplying automotive, appliance, and construction markets where surface finish and flatness affect the finished product.

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Our team is ready to design, build, and deliver solutions that meet your exact specifications. Share your project details, and we’ll provide a customized quote to help you take the next step.

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Comprehensive Support & Expertise

End-to-End Services to Power Your Operations

Precision engineering, equipment alignment, and automation support—Butech Bliss delivers a comprehensive range of services tailored to optimize every aspect of your operations. Count on our expert team to maintain the reliability, efficiency, and longevity of your equipment.