API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling
API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield DrillingKelly is the drive part of whole drill string, it transmits the torsional energy from the rotary table to the bit in the bottom of the hole. Kelly is supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string. Kelly has been approved by the API certification. Straightness is the key manufacturing process. Straightness is checked before, during and after each machining operation. Flats are precision-milled to API specifications. All millings are performed on specially designed rigid Kelly mills. Each Kelly is furnished with a pressed steel thread protector. We supply both square kelly and hexagonal kelly.
Product Details:
• Kelly is manufactured strictly according to API Spec7-1 standard. Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341 and a minimum average Charpy impact value of 40 ft-lbs.
• The end, drive section and connection of Kelly are machined and inspected according to API standard.
• Ends and drive sections, IDs and connections machined and inspected to API specifications.
• Kelly bars are ultrasonically inspected over full length and section.
• Shipped in a protective steel-cased scabbard.
Specifications:
| Size(inch) | Upper Box Connection | Lower Pin Connection | ID(mm) | Driving Section mm | |||||||||
| Type(LH) | OD(mm) | Thread | Four | Six | CrossFlat | For SquareKelly | Cross Corner For Hexa Kelly | ||||||
| Std | Optional | Std | Optional | Four | OD(mm) | Six | OD(mm) | ||||||
| 2-1/2" | 6 5/8 REG | 4 1/2REG | 196.8 | 146.0 | NC26 | 85.7 | 31.8 | 63.5 | 83.3 | ||||
| 3" | 6 5/8 REG | 4 1/2REG | 196.8 | 146.0 | NC31 | 104.8 | NC26 | 85.7 | 44.4 | 31.8 | 76.2 | 100.0 | 85.7 |
| 3-1/2" | 6 5/8 REG | 4 1/2REG | 196.8 | 146.0 | NC38 | 120.6 | NC31 | 104.8 | 57.2 | 44.4 | 88.9 | 115.1 | 100.8 |
| 4-1/4" | 6 5/8 REG | 4 1/2REG | 196.8 | 146.0 | NC46 | 158.8 | NC38 | 120.6 | 71.4 | 57.2 | 108.0 | 141.3 | 122.2 |
| 6 5/8 REG | 4 1/2REG | 196.8 | 146.0 | NC50 | 161.9 | NC40 | 120.6 | 71.4 | 57.2 | 108.0 | 141.3 | 122.2 | |
| 5-1/4" | 6 5/8 REG | 196.8 | 5 1/2FH | 177.8 | NC46 | 158.8 | 82.6 | 76.2 | 133.3 | 175.4 | 151.6 | ||
| 6 5/8 REG | 196.8 | NC56 | 177.8 | NC50 | 161.9 | 82.6 | 82.6 | 133.3 | 175.4 | 151.6 | |||
| 6" | 6 5/8 REG | 196.8 | 5 1/2FH | 177.8 | 88.9 | 152.4 | 173 | ||||||
| 6 5/8 REG | 196.8 | NC56 | 177.8 | 88.9 | 152.4 | 173 | |||||||
Detail Information
| Product Name: | API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling | Keywords: | Hexagonal Kelly |
|---|---|---|---|
| Application: | Oil & Gas Well Drilling | Hardness: | 285 To 341 BHN |
| Size: | 3", 3-1/2", 4-1/4", 5-1/4", 6" | Material: | AISI 4145H |
| High Light: | Oilfield Kelly Drill Pipe, Hexagonal Kelly Drill Pipe, Drill String Components API 7-1 | ||
Product Details:
| Place of Origin: | China |
| Brand Name: | OilMan |
| Certification: | ISO |
| Model Number: | Square Kelly & Hexagonal Kelly |
Payment & Shipping Terms:
| Minimum Order Quantity: | 5 pcs |
|---|---|
| Price: | USD800-2000/pc |
| Packaging Details: | In Bundles |
| Delivery Time: | 20-30 days |
| Payment Terms: | T/T, Western Union, MoneyGram |
| Supply Ability: | 500 pcs per month |
