The world No. 1 in crude steel production steel plant, over 70% of the HSS for bar and wire are from us.

Forged back up roll of cold and hot strip mills

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Through purchasing the forging blanks from the domestic well- known enterprises and adopt the advanced own intellectual property dual-frequency induction quenching facility and the super-cooling treatment facility as well as the whole set of differential harden equipment of back-up rolls and heat treatment process from Union Electric Steel USA, the forged rolls have very good properties with anti-spalling, wear resistance and high quality. The good facility and good technology adopted ensure the better hardness organization and prolonged service period. The products are successfully applied to single and double stands of mill, tandem mill, five stands 4-high tandem mill, five stands 6-high tandem mill etc.

Forged Back-up roll of cold and hot strip mills

Product Name C Mn Cr Mo V Ni
3%Cr 0.40-0.70 0.40-0.80 2.80-3.20 0.20-0.40 0.10-0.20 0.25-0.60
5%Cr 0.40-0.70 0.40-0.80 5.00-5.40 0.30-0.50 0.10-0.20 0.25-0.60


Typical Mechanical Properties
Type of cold rolls Tensile strength Depth of hardness Hardness of neck hardness of Barrel
Cr2% ≥800 12-18 40-55 Work roll:90-98
Intermediate roll:80-90
Back-up roll:55-75
Temper roll:95-100
Cr3% ≥900 20-28 40-55 Work roll:90-98
Intermediate roll:80-90
Back-up roll:55-75
Temper roll:95-100
Cr5 ≥1000 25-40 40-55 Work roll:90-98
Intermediate roll:80-90
Back-up roll:55-75
Temper roll:95-100


The scope of supply:
Type of cold rolls Material Body length Body Diameter Overall    length
Cold-rolling work rolls Cr2、Cr3、Cr5 ≤2500 ≤800 ≤5000
Cold-rolling intermediate rolls Cr2、Cr3、Cr5 ≤2500 ≤1000 ≤5000
Cold-rolling back-up rolls Cr3、Cr5 ≤2800 ≤1800 ≤8000
Cold-rolling temper rolls Cr2、Cr3、Cr5 ≤2500 ≤800 ≤5000

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How to find a trustworthy Adamite rolls manufacturer

If you want to find a trustworthy adamite rolls supplier with long-term cooperation, maybe you need to concern about as the following

1.Mill rolls equipment

The equipment plays an important role in the high-quality mill rolls. Types of equipment matters from the beginning to the finished products. Compared with alloy cast steel roll, adamite roll has a good abrasion resistance through a special heat treatment process, so for the products, the equipment ever much more important.

2.Quality Control

Different stages of production have to follow controlling parameters to ensure that the production department is working with the required efficiency. To get the quality mill roll, quality is absolutely necessary

3. Technological Advancement of the manufacturer

A reliable manufacturer will focus on technological advancement for its long-lasting development. The advanced technology can guarantee the improvement of products. The best supplier not only can provide high-standard products but also is the steel solution provider. Before choosing the company you should ensure the manufacture has a professional team for advanced technology.

4. Delivery time and price of the companyDelivery time often is the main factor to choose the supplier. Delivery on-time is also the basis of next time cooperation. Checking out the place of the company and the delivery term is essential. Price is also an important element for a best-value mill roll manufacturer.


Founded in 2007, LMM GROUP mainly produces all kinds of metallurgical rolls for various types of steel, bar, high-speed wire and strip hot and cold plate and strip rolling mills.

The company covers an area of 100,000 square meters, including two complete production lines for cast rolls and forged steel rolls, processing workshops, product research and development centers, testing centers, training centers and office buildings and other supporting facilities. The factory environment is very beautiful.

LMM have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time

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We would be happy to help and advise if you have any questions or inquiries.