| Customization: | Available |
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| Customized: | Non-Customized |
| Certification: | ISO, IATF16949 |
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Chemical composition
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Material
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C
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Si
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Mn
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P
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S
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Ni
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Cr
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Mo
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304
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≤0.08
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≤1.00
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≤2.00
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≤0.045
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≤0.03
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8.0-10.5
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18.0-20.0
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-
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304L
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≤0.03
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≤1.00
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≤2.00
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≤0.045
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≤0.03
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8.0-13.0
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18.0-20.0
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-
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316
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≤0.08
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≤1.00
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≤2.00
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≤0.045
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≤0.03
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10.0-11.0
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16.0-18.0
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2.0-3.0
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316L
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≤0.03
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≤1.00
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≤2.00
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≤0.045
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≤0.03
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10.0-11.0
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16.0-18.0
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2.0-3.0
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420
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0.26-0.35
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≤1.00
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≤1.25
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≤0.04
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≤0.03
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≤0.60
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12.0-14.0
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-
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420C
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0.36-0.43
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≤0.80
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≤0.80
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≤0.04
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≤0.03
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≤0.60
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12.0-13.5
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-
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440
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0.90-1.00
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≤0.80
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≤0.80
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≤0.04
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≤0.03
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≤0.60
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16.0-18.0
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0.4-0.7
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440C
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0.95-1.10
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≤0.80
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≤0.80
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≤0.04
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≤0.03
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≤0.60
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16.0-18.0
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0.4-0.7
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Grade:G10 to G1000
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Grade
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Ball diameter variation
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Deviation from spherical from
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Surface roughness
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Lot diameter variation
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Nominal ball deviation tolerance
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Vdws
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△Sph
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Ra
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Vdwl
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Tdn
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not over
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μm
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10
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0.25
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0.25
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0.025
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0.5
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*
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16
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0.4
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0.4
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0.032
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0.8
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*
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20
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0.5
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0.5
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0.05
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1
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*
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28
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0.7
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0.7
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0.05
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1.5
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*
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40
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1.0
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1.0
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0.08
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2
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*
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60
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1.5
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1.5
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0.10
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3
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*
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100
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2.5
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2.5
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0.125
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5
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±12.5
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200
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5
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5
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0.5
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10
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±25
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500
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13
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13
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*
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25
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±50
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1000
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25
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25
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*
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50
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±125
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1.Can you provide sample free?
Yes ,we can provide free samples with in 0.5kg.
2.What kind of payment terms you can accept?
We can accept T/T,L/C, Western Union and Paypal.
3.What about your steel ball's quality?
Checking in the whole manufacturing process &100% inspection before shipment ensure the quality of our products.
4.What's your packing method?
A) Inner packing: Dry packing or oil packing are provided according to you needs.
B) Outer packing:
1)volatile rust preventive paper + poly bag + iron drum + wooden / iron pallet.
2)25kg poly bag + carton + wooden pallet or wooden box.
3)customized packing.
5.What's your delivery time?
Within 3-30 days according to your required size and quantity.
6.Is your steel ball competitive?
Yes, We are steel ball manufacture more than 30+ years.
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