One stop solution for Tungsten carbide ring rolls

Tungsten carbide roller ring

Brand name: LMM GROUP
Packing Details : Wooden box with fumigation or Wooden Fram
Delivery Details: 30~60days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight

LMM GROUP have been supplied to world’s top steel manufacturer :

Australia: Liberty steel/Bluescope steel
Iran: Oxin steel
Italy: JSW steel
United Arab EmiratesEmirates Steel
Egypt:Ezz Steel
Russia:MMK,Mechel, NLMK
Luxembourg:RIVA Group,ArcelorMittal
Turkey: Tosyalı Holding,İçdaş,Erdemir Group
Spain: Liberty Steel Group,CELSA Steel Group
India: tata-steel,SAIL, SPL,Erdemir Group etc. We do OEM for Concast and Danieli for a long time

Manufacture drawing
Process schedule with ETD date
QC checking of each process
Checking report
Photos &videos of each process
ISO 9001 certificate
Warranty Time
The third party Checking

Tungsten carbide rolls by LMMGROUP are designed to improve the performance and durability of rolling mills by providing superior wear resistance, thermal stability, and dimensional accuracy. Made from a blend of high-performance materials, including cobalt, nickel, and tungsten carbide, they are engineered to withstand the harsh demands of rolling mills and steel production.

LMM tungsten carbide rolls are well-suited for a better production economy in the rolling mill and offer a number of advantages over traditional cast iron and steel rolls, including:

• Increased productivity
• Reduced maintenance costs
• Improved product quality
• Longer roll and passform life

Data table of grades and properties of carbide roll rings

Grade Wc(%) Co(%) Ni(%) Cr(%) Density g/cm³ ±0.15 Hardness≥HRA ±0. 5 Bending strength≥N/mm²
LMM08R 92 8 14.7 88.0 2800
LMM10R 90 10 14.5 87.5 2750
LMM12R 88 12 14.2 86.0 2700
LMM15R 85 15 14.1 85.0 2650
LMM18R 82 18 13.7 83.5 2650
LMM20R 80 20 13.5 83.0 2600
LMM25R 75 25 13.1 82.0 2500
LMM30R 70 30 12.7 80.0 2400
LMM32R 68 32 12.5 79.0 2400
LMM06H 94 6 0 0 14.8 89.0 2580
LMM08H 92 8 0 0 14.7 88.5 2600
LMM10H 90 10 0 0 14.5 88.0 2700
LMM15H 85 15 0 0 14.1 85.0 2700
LMM20H 80 20 0 0 13.5 83.0 2700
LMM25H 75 25 0 0 13.1 81.5 2550
LMM30H 70 30 0 0 12.7 80.0 2500
LMM32H 68 32 0 0 12.5 78.5 2400
YGR20 90 10 14.4 87.5 2650
YGR25 88 12 14.3 86.5 2600
YGR30 85 15 14.2 85.0 2550
YGR40 82 18 13.7 83.5 2500
YGR45 80 20 13.5 82.5 2400
YGR55 75 25 13.1 80.5 2450
YGR60 70 30 12.8 79.0 2250
YGH40T 85 15 14.1 84.5 2700
YGH45T 80 20 13.5 83.0 2600

tungsten carbide rolls tungsten carbide rolls

FAQs about tungsten carbide rolls

Tungsten carbide rolls can be used in the intermediate finishing sections of rolling mills.

LMM can produce tungsten carbide rolls with outer diameters of up to 550 millimeters.

To convert from cast iron or steel rolls to tungsten carbide rolls, LMM carbide rolls product speciailists will partner with rolling mills to revise roll cooling, machining, and handling capabilities. Most rolling mills can easily adapt from cast iron to tungsten carbide.

LMM tungsten carbide rolls have a longer lifespan of up to 20 times longer than that of cast iron rolls due to their higher wear resistance. This results in reduced stoppage time for the rolling mill along with higher productivity and lower operational costs

The minimum rolling speed tungsten carbide rolls can be used at is one meter-per-second (1 m/s).

Proper cooling is crucial to ensure optimal performance of carbide rolls. The minimum recommended pressure is 4-to-6 bar and 250-to-300 liters per minute per passform.

Production equipment

The company has an integrated office space including a R&D center and a testing center, and a large-scale modern carbide roller ring production line. It can independently complete the entire process from product design, research and development, production of tungsten carbide powder to cemented carbide roll ring forming, processing, slotting, and rib milling of finished products. It has reached a production scale of 1,000 tons (50,000 pieces of cemented carbide roller rings) per year. The output ranks among the top in the world.

Whole process supervision of the quality of raw material

LMM tries its utmost to meet the demand of customers. Our professional R&D department and production line will provide the direct and effective quality and service for you.

With over twenty years’ experience on the production of cemented carbide roll rings, LMM has established an inte-grated system including R&D and extraction of powder and production and marketing of alloy . Through our professional service, you can make the correct choice for the material to match your product.

Cemented carbide roll rings of production process
Cemented carbide roll rings of production process


The company strictly according to modern enterprise management requirements set up a perfectquality assurance system, and passed the ISO9001:2008 quality management system certification,ISO14001:2004 environmental management system certification, OHSAS18001:1999 occupationalhealth and safety management system certification.

Service Display

Recommend suitable products according to the actual working conditions and needs of customers.It can also bedeveloped and designed according to needs, and customized services can be provided. During the epidemic, provide remote detection technical support.

Strict quality control:
From raw materials, to the production process and befor eleaving the factory, all performance indicators arestrictly tested, and the professional QC team controls according to the process.

After-sales service:
Quality assurance and Resolution of any issues that arise 

Product Brochure Download

About LMM

LMM GROUP is cemented carbide steel industry, focus on the efficient solution, thus become the specialization of carbide roller ring.

  • Established a strong r&d team,and constantly introduced from abroad advancedproducton technology,
  • Specialization , and the scale of production mode, make we concentrate hard alloy rollring this industry, make our products more fineness and seriation,
  • Established a strong marketing service team,fully meet the requirements of different customers.
    with the three advantages,enable us to continually provide userswith different solution for users to create more value.

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