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Grinding Media

GRINDING MEDIA: FORGED AND CAST BALLS AND STEEL BARS

SUPRASTEEL is a company specialized in the supply of grinding media for mining, power plants, clinkers and cement plants.

We only work with most reputed and important worldwide steel rolling mills, exporting to customers in mining and cement plants in Europe, Africa and Latin America.

All our supply chain is fully certified on international standards ISO 9001:2001 Integral Quality Management, ISO 14001:2004 Environmental Management and OHSAS 18001:2007 Health and Safe Labor Practice.

The raw material used in the forged balls and steel rods production is manufactured in automatic rolling mills from high quality alloy steel, which guarantees hardness and wear performance of the final product.

We can supply tailor-made grinding media to our customers.

The manufacturing process is followed up by our own sourcing department, guarantying that both product quality and efficient logistics, are according to the customer needs. Under customer’s request, we can carry out independent surveyor inspections prior to shipment by SGS or other international agencies.

Bolas Forjadas
FORGED BALLS

Grinding Balls in alloy steel rolled and/or stamped.

We supply balls on a wide and complete range of hardnesses, with different hardness profiles, to maximize the grinding performance in wear rate and impact endurance, at a regular wear and with tailor-made alloys according to the mill and milling material needs.

General specifications:
  • Diameters from 20 mm (4/5’’) to 150 mm (6’’)
  • Hardness from 54 HRC to 65 HRC
  • Breakage Rate: 2.0% max
  • Impact Test:
  • Ak. = 12 J/CM2 min
  • 12.000 times minimum with a dropping test machine of 6 mts.
  • Packing: Big Bags (1000 kg) or steel barrels (900-950 kg/each).
Bolas Fundidas
CAST BALLS

Grinding cast balls and cylpebs in alloy steel.

We supply balls on a wide and complete range of hardnesses, with different hardness profiles, to maximize the grinding performance in wear rate and impact endurance, at a regular wear and with tailor-made alloys according to the mill and milling material needs.

General specifications:
  • Diameters from 20 mm (4/5’’) to 150 mm (6’’).
  • Hardness from 50 HRC to 65 HRC
  • Breakage Rate: 1.0% max
  • Chrome: From 1.5 to 22%
  • Packing: Big Bags (1000 kg) or steel barrels (900-950 kg/each).
Barras Acero
GRINDING BARS (RODS)

We supply heat treated steel bars in two main standards:

Type A
  • Diameter: 60 – 90 mm
  • Length: 3 – 6 meters
  • Hardness: HB 430-540
Type B
  • Diameter: 60 – 90 mm
  • Length: 3 – 6 meters
  • Hardness: HB 280-320

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Contact us: we specialize in grinding steel products

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