Tool joint thread gauges are comprehensive measuring instruments for checking connection threads of tool joints, swivels, kellies, and drill collars. There are four types of thread gauges depending on the type of tool joint: regular (REG), full hole (FH), internal flush (IF), and numerical connection (NC).
TECHNICAL PARAMETER
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数字型 NC |
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|
规 格 in Specification |
扣 数 /in(螺距) Number of Threads |
锥 度Taper（in/ft） |
|
NC23 |
4(6.35) |
1:6(2) |
|
NC26 |
4(6.35) |
1:6(2) |
|
NC31 |
4(6.35) |
1:6(2) |
|
NC35 |
4(6.35) |
1:6(2) |
|
NC38 |
4(6.35) |
1:6(2) |
|
NC40 |
4(6.35) |
1:6(2) |
|
NC44 |
4(6.35) |
1:6(2) |
|
NC46 |
4(6.35) |
1:6(2) |
|
NC50 |
4(6.35) |
1:4(3) |
|
NC56 |
4(6.35) |
1:4(3) |
|
NC61 |
4(6.35) |
1:4(3) |
|
NC70 |
4(6.35) |
1:4(3) |
|
NC77 |
4(6.35) |
1:4(3) |
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正规型 REG |
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|
规 格 in Specification |
扣 数 /in(螺距) Number of Threads |
锥 度Taper（in/ft） |
|
2 3/8REG |
5(5.08) |
1:4(3) |
|
2 7/8REG |
5(5.08) |
1:4(3) |
|
3 1/2REG |
5(5.08) |
1:4(3) |
|
4 1/2REG |
5(5.08) |
1:4(3) |
|
5 1/2REG |
4(6.35) |
1:4(3) |
|
6 5/8REG |
4(6.35) |
1:6(2) |
|
7 5/8REG |
4(6.35) |
1:4(3) |
|
8 5/8REG |
4(6.35) |
1:4(3) |
|
贯眼型 FH |
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|
规 格 in Specification |
扣 数 /in(螺距) Number of Threads |
锥 度Taper（in/ft） |
|
3 1/2FH |
5(5.08) |
1:4(3) |
|
4 1/2FH |
5(5.08) |
1:4(3) |
|
5 1/2FH |
4(6.35) |
1:6(2) |
|
6 5/8FH |
4(6.35) |
1:6(2) |
|
2 7/8FH |
5(5.08) |
1:4(3) |
|
内平型 IF |
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|
规 格 in Specification |
扣 数 /in(螺距) Number of Threads |
锥 度Taper（in/ft） |
|
5 1/2IF |
4(6.35) |
1:6(2) |
|
4 1/2IF |
4(6.35) |
1:6(2) |
|
4 IF |
4(6.35) |
1:6(2) |
|
3 1/2IF |
4(6.35) |
1:6(2) |
|
2 7/8IF |
4(6.35) |
1:6(2) |
|
2 3/8IF |
4(6.35) |
1:6(2) |
