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

LMM GROUP main products focus on the cold and hot plate & wide strip mill rolls and heavy section mill rolls and big casting & forging pieces.

LMM GROUP Certification


rolling mill roll material


Work Roll Material Selection

The work rolls of rolling mill roll before rough rolling (R1):

Work rolls before rough rolling must have toughness, wear resistance and thermal crack resistance. The hardness range is about HS40-55. Generally, 60CrNiMo cast steel and other material rolls are used.

Work rolls after rough rolling (R2):

The work rolls after rough rolling require the materials with good resistance to cracking. Generally, semi-steel, high-chromium steel, high-speed steel are chosen.

The work rolls rolling mill roll before finishing rolling mill (F1-4):

The work rolls in the front part of finishing rolling have high temperature and heavy load. Generally, cast semi-steel and high-chromium centrifugal composite cast iron are used. High-chromium centrifugal composite cast iron has high roll surface wear resistance and thermal crack resistance, and it can suppress roll surface defect.

Finish roll work roll (F5-7):

In the latter part of finishing rolling, the work roll is used in the final stage of rolling, which has a very important influence on product quality and surface state. The performance of the roll needs to have high hardness, wear resistance, indentation resistance, peeling resistance and thermal crack resistance. Generally, infinite chilled cast iron (normal type, improved type) is selected.

Selection of support roller and vertical roller material

The support roller for both rough rolling and finishing rolling are required to have good thermal crack resistance, wear resistance, fatigue resistance and high strength. Materials such as composite cast steel and alloy forged steel (Cr3, Cr5) are generally used.


Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

Always a pre-production sample before mass production;
Always final Inspection before shipment;
During the epidemic, provide remote detection technical support

Tell us a little about your application and we’ll get back to you to finalize a quotation to meet your needs as quickly as possible.

Rolling mill rolls product

Classification by roll material:

Cast iron mill rolls

  • Alloy indefinite chilled cast iron rolls
  • Alloy chilled cast iron rolls
  • Alloy SG ductile cast iron roll
  • Pearlitic ductile cast iron roll
  • Bainite ductile cast iron roll
  • Centrifugal cast iron roll

Cast steel mill rolls   

  • Alloy cast steel rolls
  • Semi-steel roller
  • Graphite steel rolls
  • High-chromium steel roll
  • High-speed steel roll

Forging mill rolls

Sort by position on the rolling mill:

Work rolls
backup rolls

Intermediate roll

Product advantage

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

LMM high-speed steel rolls have higher steel passing per groove (times) due to their good wear resistance, which saves roll changing time, improves rolling mill operation rate, reduces roll consumption, and improve the overall efficiency of the factory.
Generally, the amount of steel passing in a single groove (times) is 3 to 5 times that of cast iron rolls.

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