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Short Drill Collar
Short Drill Collar Type DZT
The short drill collar produced by our company is made of special alloy steel and is accordant with mechanical property of drill collars. Besides, the connection of the drill collar is accordant with API. It is mainly used for connecting special tools or composing drill tools.
|
Normal Size Specification |
O.D. |
Connection |
Length Series |
|
|
mm(in) |
in |
API |
ft-in |
|
|
|
(mm) |
|
(mm) |
|
|
4-1/8 (105) |
2(50) |
NC31 |
3＇，6＇，9＇，12＇，15，18＇，21＇，24＇，27＇ (915，1,830，2,743，3,660，4,575，5,490，6,405，7,320，8,235) |
|
|
4-3/4 (121) |
2(50) |
NC35 |
|
|
|
5 (127) |
2-1/4(57) |
NC38 |
|
|
|
6-1/4 (159) |
2-13/16(71) |
NC46 |
|
|
|
6-1/2 (165) |
2-13/16(71) |
NC46 |
|
|
|
7 (178) |
2-13/16(71) |
NC50 |
|
|
|
8（203） |
2-13/16(71) |
NC56 |
|
|
|
9（229） |
2-13/16(71) |
NC61 |
|
|
According to customer requirements，we can design and manufacture other serial specification products
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Our mainly products: drilling rig parts, drilling equipment, solid control system, wellhead equipment, fishing tools, cementing tools.
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