產品描述
Kellys
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Kellys is driving section of wohole drill stem. Kelly is available with square kelly and hexagonal kelly. TIANHE brand kelly are manufactured strictly from API Spec7-1 and SY/T6509-2000 standard.
Technical specification and parameters
| Size |
Length
in |
Upper box connection |
Lower pin connection |
I.D. |
Driving section |
| mm |
in |
Type(LH) |
O.D. |
Thread |
O.D. |
Cross flat |
For square kelly |
Cross corner for hexa kelly |
| Std |
optional |
Std |
optional |
| 63.5 |
2 1/2 |
12.19 |
6 5/8REG |
4 1/2REG |
196.8 |
146.0 |
NC26 |
85.7 |
31.8 |
63.5 |
83.3 |
|
| 76.2 |
3 |
12.19 |
6 5/8REG |
4 1/2REG |
196.8 |
146.0 |
NC31 |
104.8 |
44.4 |
76.2 |
100.0 |
85.7 |
| 88.9 |
3 1/2 |
12.19 |
6 5/8REG |
4 1/2REG |
196.8 |
146.0 |
NC38 |
120.6 |
57.2 |
88.9 |
115.1 |
100.8 |
| 108.0 |
4 1/4 |
12.9 |
6 5/8REG |
4 1/2REG |
196.8 |
146.0 |
NC46 |
158.8 |
71.4 |
108.0 |
141.3 |
122.2 |
| 6 5/8REG |
4 1/2REG |
196.8 |
146.0 |
NC50 |
161.9 |
71.4 |
108.0 |
141.3 |
122.2 |
| 133.4 |
5 1/4 |
12.9 |
6 5/8REG |
|
196.8 |
|
5 1/2FH |
177.8 |
82.6 |
133.3 |
175.4 |
151.6 |
| 6 5/8REG |
|
196.8 |
|
NC56 |
177.8 |
82.6 |
133.3 |
175.4 |
151.6 |
|
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