- Axles[1]
- Crank Mechanism[1]
- Alcohol & Hydroxybenzene & Ether[1]
- Chemical Auxiliary Agent[1]
- Chemical Reagents[1]
- Food Additives[1]
- Other Chemicals[1]
- Other Construction & Real Estate[1]
- Voltage Regulators/Stabilizers[1]
- Other Energy Related Products[1]
- Other Petrochemical Related Products[1]
- Clamps[1]
- Hooks[1]
- Drilling Machine[2]
- Other Machine Tools[1]
- Other Cutting & Forming Tools[1]
- Other Machine Tools Accessories[3]
- Forklifts[6]
- Other Material Handling Equipment[1]
- Metal Processing Machinery Parts[1]
- Metallurgy Machinery Parts[1]
- Other Mining Machinery[1]
- Mining Machinery Parts[10]
- Other Machinery[8]
- Used Mining Machinery[2]
- Flanges[4]
- Other Mechanical Parts[1]
- Pipe Fittings[4]
- Pumps[4]
- Shafts[2]
- Valves[1]
- Cast & Forged[9]
- Barite[1]
- Steel Pipes[4]
- 100% Ramie Fabric[7]
- Grey Fabric[1]
- Other Tools[5]
- Tool Parts[10]
- Special Transportation[1]
- Contact Person : Mr. Wei Rain
- Company Name : Shaanxi FYPE Rigid Machinery Co., Ltd.
- Tel : 86-29-88895909
- Address : Shaanxi,Xi'an city,No.36th South Fenghui Road, hi-tech zone, xi'an city
- Country/Region : China
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API Standard back off sub
API Standard back-off sub
The back-off sub also named back-off spear. There is usually a left hand thread for tool joint at the upper part of the body, while the expansion sleeve has right hand thread. The guide cone at the lower part can make the expansion sleeve of the sub conveniently screw the fish connection. Raising the drilling tool, the expansion sleeve can hold the fish firmly, then reversing.
Specification
Type | OD (mm) | ID (mm) | Connection(API) | Thread for Fishing(API) | OAL (mm) |
ZDK105-1-00 | 105 | 20 | NC31 LH | 2 7/8EUE | 572 |
ZDK121-1-00 | 121 | 22 | NC38 LH | 3-1/2EUE | 600 |
ZDK121-2-00 | 121 | 22 | NC38 LH | NC38 | 630 |
ZKD159-1-00 | 159 | 28 | NC50 LH | NC50 | 690 |
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API Standard back off sub