1" hot rolling steel grinding balls for the gold minerals

1" hot rolling steel grinding balls : Quality Certificates:ISO & SGS Certificates; hardness: above 60 HRC; Breakage:less 1%

1" hot rolling steel grinding balls for the gold minerals:Quality Certificates:ISO & SGS Certificates;Surface hardness: above 60 HRC;Breakage: under 0.1%  

Company profile:

Hebei Goldpro Metal Products Co.,Ltd is one of the largest manufacturers and exporters for the hot rolling grinding balls and forged ball sin China and the annual production output is 200,000Ton, the diameter is 20mm-200mm. Our products are mainly hot rolling balls and forged balls which are used in the power station, cement plants, mining ore and the refractory industry. We can supply different products for different customers with different demands.

Features of the products:

1. Dia.:20mm-150mm

2. Surface hardness: more than 60HRC, Core hardness: more than 55HRC.

3. Breakage: Less than 1%

4. Impact toughness: More than 12J/cm2

5. Density: 7.8-7.85g/cm3

6. Impact to broken (times): more than 10000

The Certificates we have got:

a). ISO Certificates:

b).SGS Certificates:

Material of the grinding steel balls:

Material	C	Si	Mn	Cr	S	P
GNB2	0. 70%-0.85%	0.17%-0.37%	0.70%-0.80%	0.20%-0.70%	≤0.035%	≤0.035%
GN65Mn	0.62%-0.70%	0.17%-0.37%	0.90%-1.20%	<0.25%	≤0.035%	≤0.035%
GN60Mn	0.57%-0.65%	0.17%-0.37%	0.50%-0.80%	<0.25%	≤0.035%	≤0.035%
GN40Cr	0.37%-0.44%	0.17%-0.37%	0.50%-0.80%	0.80%-1.10%	≤0.035%	≤0.035%
GN45#	0.42%-0.50%	0.17%-0.37%	0.50%-0.80%	<0.25%	P:≤0.035%	P:≤0.035%

Technical data of the steel balls:

Nominal diameter (mm)	Diameter tolerance (mm)	Weight of Single of forging ball in average(kg)	Number of piece of One ton forging ball in average	Surface hardness	Impact toughness
DIA 20 DIA 25 DIA 30 DIA 40 DIA 50	+2 -1	37 72 125 296 578	27027 13888 8000 3378 1730	55-65	≥12
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100	+3 -2	999 1586 2367 3371 4624	1001 630 422 296 216
DIA 110 DIA 120 DIA 130	+4 -2	6151 7980 10158	162 125 98
DIA 140 DIA 150	+4 -3	12406 14999	80 66

Procedure of the steel balls:

a) Hot rolling steel balls:

b)forged steel balls:

Package:

1" hot rolling steel grinding balls for the gold minerals