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BizVerify |
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| Metals International Limited |
| Verified By : SMR(HK) |
| Verified Date : 2011-03-25 |
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| Model No.︰ | - |
| Brand Name︰ | - |
| Country of Origin︰ | - |
| Unit Price︰ | - |
| Minimum Order︰ | - |
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Spiral Drill Dollars
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Outer diameter
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Depth of cut
mm
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Pitch
±25.4
mm
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Depth of cut
mm
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mm
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in
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98.4
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3 7/8
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4.0±0.79
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914
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101.6~111.1
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4~4 3/8
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4.8±0.79
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914
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114.3~130.2
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4 1/2~5 1/8
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5.6±0.79
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965
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133.4~146.1
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5 1/4~5 3/4
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6.4±0.79
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1067
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149.2~161.9
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5 7/8~6 3/8
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7.1±1.59
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1067
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165.1~177.8
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6 1/2~7
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7.9±1.59
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1168
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181.0~200.0
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7 1/8~7 7/8
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8.7±1.59
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1626
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5.6±0.79
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203.2~225.4
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8~8 7/8
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9.5±1.59
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1727
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6.4±0.79
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228.6~250.8
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9~9 7/8
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10.3±2.37
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1829
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7.1±1.59
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254.0~276.2
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10~10 7/8
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11.1±2.37
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1930
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7.9±1.59
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279.4
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11
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11.9±2.37
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2037
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8.7±1.59
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· Spiral drill collars
· Based on API Spec.7 the spiral drill collars are made of 4145H modified chromium –molybdenum alloy steel. All threads are phosphated, copper zed or cold rolled. All threads machined with CNC Lathes –Double –shoulderd, including some special threads. The maximum outer diameter of drill collars can amount to 14 inch.
- Note: spiral drill has three spiral grooves, right hand and well distributing.
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