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API Spec 7-1 Hexagonal Kelly For oil drilling
- 2000 Piece / Pieces per Month
- any port in China
- Credit Card
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Product Details
Place of Origin: | Hebei, China | Brand Name: | longxuan | Type: | Drill Pipe |
Machine Type: | Drilling Tool | Certification: | API | Material: | Carbon Steel |
Processing Type: | Casting | Use: | Well Drilling |
Product Description
kelly bar, drilling pipe drilling rod, machine pipe
Kelly, as the driven part of drill string, locates in the top of it to transmit torque and bear the suspended weight. According to API Spec7-1 Specifications, the material quality is 4145H that’s after heat treatment, thread hardening treatment and phosphating to better antiseize. It also can be produced 114.3×114.3and 170×170 upon customers’ requirements.
Kelly Specifications | m Drive Length |
m Length |
Internal thread connection |
External thread connection | ||||
mm | in |
Left-hand thread | mm External Diameter |
Specifications |
mm External Diameter |
mm Internal Diameter | ||
76.2 | 3 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC31 | 85.7 | 31.8 |
88.9 | 31/2 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC38 | 120.6 | 57.2 |
108.0 | 41/4 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC46 | 158.8 | 71.4 |
11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC50 | 161.9 | 71.4 | ||
133.4 | 51/4 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC56 | 177.8 | 82.6 |
11.28 | 12.19 | 6 5/8REG -LH | 196.8 | 51/2FH | 177.8 | 82.6 |
| m Drive Length | m Length |
Internal thread connection |
External thread connection | ||||
mm | in |
Left-hand thread | mm External Diameter |
Specifications |
mm External Diameter |
mm Internal Diameter | ||
76.2 | 3 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC26 | 85.7 | 31.8 |
88.9 | 31/2 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC31 | 104.8 | 44.4 |
108.0 | 41/4 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC38 | 120.6 | 57.2 |
133.4 | 51/4 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC46 | 158.8 | 76.2 |
11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC50 | 161.9 | 82.6 | ||
152.4 | 6 | 11.28 | 12.19 | 6 5/8REG -LH | 196.8 | 51/2FH | 177.8 | 88.9 |
11.28 | 12.19 | 6 5/8REG -LH | 196.8 | NC56 | 177.8 | 88.9 |
Established in 1975, Our factory is subordinated to Hebei Geology and Mineral
Industries Department. As the designated production enterprise, Our factory
specialized in manufacturing drilling equipment and auxiliary tools.
It is a member of China Mining Association, vice chairman of the Geological
and Mining Equipment Branch, a member of China Geological and
Equipment General Corporation, a member unit of National
Water Well Drilling Rig Information Network and a designated production enterprise
of the General Reserve Department of PLA.
Our factory has well equipped production equipment, strong technical strength,
perfect detection methods, reliable product quality and advanced management concept.
It has the domestic most advanced equipment, including the Numerical Controlled (NC)
friction welding machine, drill pipe hammer forging and all-in-one tempering equipment.
Besides, it is equipped with non-destructive testing (NDT), physical experiment,
chemical composition analysis and metallurgical analysis apparatus.Our factory get the ISO9001 in 2009 and API certification in 2002 one after another,
which becomes one of the API authorized enterprises in geological departments.
Production Equipment:
Excellent equipment and first class technology
Professionalism navgates science@techonlogy science&technology conceives speciality
Perfect in the process refining and improve by meticulosity
Contact Us
- Shijiazhuang Longxuan Trading Co., Ltd.
- Contact nameLong Xuan
- Phone0086-311-85803797
- AddressShijiazhuang Shijiazhuang,Hebei
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