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


How to choose The Best Mill Roll Manufacturers ?


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

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.

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

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.

Delivery time and price of the company

Delivery 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.

LMM GROUP Enterprises specializing in the production of High performance mill rolls

LMM GROUP Provide personalized services: Provide personalized customized services according to the special needs of customers. For example, customized roll coating services are provided to improve the wear and corrosion resistance of the rolls.

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, NLMK, MMK, etc. We do OEM for Concast and Danieli for a long time

Technical excellence in our core competencies – melting, casting, forging, heat treating and machining – allows us to provide a superior product and meet the most demanding requirements of our customers.



The company possesses 8 melting facilities,including an Electric Arc Furnace for steel melting of 30tons,45/70tons LF-VDFurnaces,Electric Slag Remelting Furnaces (10tons and 15tons),and medium frequency Induction Meling Furnaces(5tons,10tons and20tons).These meling facilities in total can accomplish a daily smelting capacity of 120tons molten steel,240tons of molten iron and 25tons of electric slag remelting.

All the melting furnaces are automatically controlled by PLC with very good working conditions,they are equippedwith automatic alarm system and fur-nished with pertect equipment for elimi-nating smoke and dust,All the raw ma-terials for smelting are strictly controlled,the chemical composition are preciselytested to ensure the quallfied meltingprocess.Thereby,the refining processshows also excellent resullts.

LMM GROUP has two sets of horizontal centrifugal casting machines,with the maximum centrifugal cast roll size of Dia.中1400×3860mm Barrel Length.The centrifugal casting machines can realize the integration of spray coating and controllingthe mould temperature.They are driven by hydraulic motor and operated steadily.The speed of rotation could reach1500r/min,which can assure the technical requirement on gravity multiple accurately and confirm the best quality of work-ing layer.

Forging Equipment
There is one set of 45MN Oil Hydraulic Press which can ensure the adequate ratio of forging reduction and deformationfor forged rolls.

Heat Treatment Equipment
There are sixteen sets of car-type electric resis-tance funaces and gas furnaces operating withhigh,medium and low temperature,two sets of dif-ferential heat treatment furnaces,one set of dualfrequency induction quenching machine,two setsof spray quenching machines,one set of high-fre-quency hardening machine and two sets of deepfreezing treatment troughs.All the fumaces arecomputer controlled,with the furnace temperaturedeviation less than 10 degree,which ensures verygood uniformity of roll hardness.

Machining Equipment
There are 36sets of machining
equipment,incuding CNC lathes,CNC grind-ers,and CNC double-sded milling
machines.The machining range can be
dia.80×1000-dia.1600x8000mm andprecision ranges up to 0.003mm.

Testing Equipment
The company has the most advanced inspection and testing equipments such as X-rayFluorescence Spectrometer,Plasma Emission Spectrometer,Optical Emission Spec-trometer(OBLF),Hydrogen/Oxgen/Nitrogen Combined Analyzer (LECO),Carbon/SulfurAnalyzer for chemical analysis,and also has Scanning Electron Microscope,Metalo-scope,Image Analyzer (Zeiss),Microhardness Tester,Universal Testing Machine,Impact Testing Machine,Analog and Digital Ultrasonic Testing Device,MagneticPowder UT Tester,Stress Meter,Portable Leeb &Shore Hardness Tester,etc.Allthese instruments and equipments can guarantee the Quality Assurance effectively.

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.