Concentrating on wear-resistant grinding material for 30 years, Shandong Huamin Steel Ball Joint-Stock Co., Ltd is one of the largest grinding rod manufacture in China. We manufacture the product with the length of 2m to 6m and the diameter of 40mm to 140mm. The data is just for reference. The product can also be customized.

       After years of research and development, we finally develop the new-type steel grinding rod successfully. The newly developed product is characterized by low wear, unique chemical composition, high hardness of 45HRC to 55HRC, and strong toughness. Meanwhile, via the quenching and high temperature tempering treatment, the internal stress is removed. The product has good straightness, and won't break, bend and come out with two tapering ends. The economic benefit is much in evidence.

 a. The blanking of the steel grindng rod is implemented via the sawing machine. The dimensional tolerance would adide by the requirements of the order. After the implementation of blanking, the two ends of the raw material are polished into the R arc via the polishing machine.

b. The surface of the product for the rod mill cannot have the crack, overburning and fissure visible to the naked eyes.

c. The nonstraightness of the product is less than 0.2%. The diameter tolerance ranges from +0mm to -1.5mm. The length tolerance is fro +0mm-25mm. The fracture should be less than 3%.

2. Specification of  Grinding Rod

AS in the following sheet.

1) Size: Dia. 40 - 120mm, Length 2000-6000mm

2) Hardness: HRC 45-55

3) Chemical elements(%):

C: 0.48-0.85, Si: 0.15-0.37, Mn: 0.7-1.0, P: 0.035 MAX, S: 0.035 MAX

Nominal Diameter(mm) Dimensional Tolerance(mm) Roundness %

Φ20 ±2   ≤6

Φ25 ±2    ≤6

Φ30 ±2    ≤5

Φ35 ±2    ≤5

Φ40 ±2    ≤5

Φ50 +3,-1    ≤4

Φ60 +3,-1    ≤4

Φ70 +3,-1    ≤4

Φ75 +3,-1    ≤4

Φ80 +3,-1    ≤4

Φ90 +4,-2    ≤4

Φ100 +4,-2    ≤4

Φ120 +4,-2    ≤4

Φ125 +4,-2    ≤4

Φ130 + 4,-2    ≤4

Φ140 +4,-2    ≤4

Φ150 +4,-2   

3. Application And Packing

      The steel grinding rod is the optimum choice for the enterprises using the rod mill and the coal mill, such as cement plant, electric power plant, mine, quartz sand plant, silica sand plant, sand aerated industry, coal chemical industry, gas concrete plant, etc.

      We pack our products by barrel or bundled

4.Production process

      Raw Material Inspection Blanking Burr Grinding Intermedia Frequency Furnance Heating Straightening Quenching Treatment Treatment Inspection Packing

5. Certification and patent

   Our company has obtained ISO 9001 International Quality System Authentication, ISO14001 Environmental System Management Authentication and ISO18001 occupational health and safety certification, safety standardization identification, clean production enterprise certification.

6.Cooperative Partner

 80% of our products are exported ,and we are keeping close cooperation with many  large companies.

7. Credibility

Our company has won the "Shandong Province Famous Brand", "Shandong Famous Trademark" ,"Leading Forged Steel Ball Manufacturer in China ", "High-tech Enterprise "and "Contract Abiding and Promise Keeping Enterprise",etc.

Diameter(mm) Surface Hardness Impact Test(Ak) Tensile Strength

40-140mm 45-55 ≥ 12 ≥ 1000