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Kelly
Kelly
We are a professional kelly manufacturer and supplier in China. Our oil drilling kelly, a type of drilling equipment, is driving section of the whole drill stem. We can provide both square kelly and hexagonal kelly for you to choose from. These products are strictly manufactured in accordance with API Spec7-1 and SY/T6509-2000 standard.
Specifications of Kelly
| 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 hexagonal 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 | |||||
Rugao Yaou Company, founded in 2004, is an oil drilling equipment supplier. Through our continued efforts, we have received the certificate of the American Petroleum Institute (API). Thanks to our high quality and low prices, our kellys, drilling parts, and shearing machines etc. are very popular in America, Kazakhstan, Uzbekistan, Egypt, Turkey, India, to name a few.
We are looking forward to working with you. Please contact us for further information.
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- Heavy Weight Drill Pipe
Our heavy weight drill pipe, a type of oil drilling equipment, is produced in accordance with API Spec7-1 Standard. Its wall thickness is between drill pipe and drill collar, and its structure is similar to drill pipe.
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- Casing Pipe
A casing pipe is a specialized large-diameter pipe lowered into an open hole and cemented in place. Our casing pipes are available in standard API configurations, with all sizes from 4-1/2" to 20" in grade J55, N80, L80, C90, P110 and Q125.