No 373, Xinxing Road, Kenli District, Dongying city, Shandong Province, China | |
(+86)-0546-2527737 | |
86-13356609737 | |
hf@hfcastings.com |
1.Linear Tolerance(mm) |
2.Limit Dimension for Cast Holes |
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Dimensions |
Normal |
Premium |
Diagram |
Hole Dia (mm) |
L/D |
|
0-10 |
±0.12 |
±0.10 |
Φ2-Φ3 |
L/D≤2 |
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11-15 |
±0.20 |
±0.13 |
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16-20 |
±0.25 |
±0.15 |
Φ4-Φ7 |
L/D≤5 |
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21-30 |
±0.30 |
±0.20 |
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31-50 |
±0.40 |
±0.25 |
≥Φ8 |
L/D≤10 |
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51-75 |
±0.50 |
±0.35 |
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76-100 |
±0.65 |
±0.45 |
Φ2-Φ3 |
L/D≤1 |
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101-125 |
±0.80 |
±0.60 |
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126-150 |
±1.00 |
±0.70 |
Φ4-Φ7 |
L/D≤2.5 |
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151-175 |
±1.20 |
±0.80 |
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176-200 |
±1.50 |
±0.90 |
≥Φ8 |
L/D≤3.5 |
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201-250 |
±1.80 |
±1.10 |
Deeper holes can be casted by using soluble cores and ceramic cores. |
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>250 |
±0.8% |
±0.5% |
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3. Angle Tolerance |
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Angle Type |
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Normal |
±1º |
±2º |
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Premium |
±0.5º |
±1º |
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4.Tolerance for Flatness, Straightness and Roundness |
5.Size and weight range |
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Cast Dimension(mm) |
Normal |
Premium |
Items |
Size |
Premium |
|
0-25 |
0.2 |
0.1 |
Outline Dimension |
1000X900X600 |
<500 |
|
26-50 |
0.3 |
0.2 |
Weight(KG) |
0.005-120 |
0.5-5.0 |
|
51-100 |
0.5 |
0.3 |
Min. Wall thickness(mm) |
0.3 |
8-15 |
|
101-150 |
0.8 |
0.4 |
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6.Surface Roughness(Ra/µm) |
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Rough Castings |
Weight>5KG |
6.3 |
The surface finish for the casting we can provide with are as the following: Blacking, Zinc plating,Chrome plating and Nickel plating for the carbon steel and the low alloy steel castings; Tumbling, Dull polishing, Mirror polishing, Electrolytic polishing and Passivation treatment for the stainless steel castings. |
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Weight≤5KG |
3.2 |
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Finished Castings |
0.8-1.6 |