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Help CenterAPI Rotary Drilling Square Kelly Bar for Oil Drill Pipe
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We offer square and hexagonal kellys. Kellys are available up to 16 meters long. Our kellys are made from AISI 4145H alloy bars that are quenched and tempered full length. A hardness range of 285 to 341 BHN and a minimum impact value of 54 Joules as per ASTM A 370 are maintained one inch bellow the surface at room temperature. To improve resistance to galling, all connections are phosphate-coated with an API thread compound. Each bar used to manufacture kellys has been examined with magnetic particle inspections and ultrasonic inspections.
| Packaging Detail: | Steel belt strapping |
| Delivery Detail: | About 30 days |
SLRT, located in China's second largest oil field, with the registered capital of RMB one hundred million, as the first tier supplier network of CNPC and Sinopec in China, we are a API certificated manufacturer and global supplier of quality oilfield equipment to the oil and gas industry.
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