API Slick Drill Collars 4145H
Product Quick Detail
- FOB Price
- USD $5,000.00 / Piece
- Place Of Origin
- China (Mainland)
- Minimum Order
- 1
- Packaging
- Wooden box
- Delivery
- 15 Days
Specifications
Materials:
Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the "as rolled" surface finish condition. Alternative surface finishes are available.
Rigid Inspection Procedures:
We inspect all our drill collars to ensure compliance with API SPEC 7-1 standards. These inspections include visual dimensional checks as well as ultrasonic inspections over the entire body of the drill collar.
Cold Rolling:
Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled. Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation.
Phosphate-coated or Copper Plating:
All connections are phosphate-coated or copper plated to improve resistance to corrosion.
Slip Groove, Elevator Groove and Size:
Lake offers optional slip and elevator recesses to improve handling efficiency and safety. Unless otherwise specified, slip and elevator recesses are machined in compliance with API spec 7-1 guidelines.
Thread Protectors:
Our company offers steel, cast steel and plastic steel thread protectors for its drill stem products.
| Nominal size | D | d | L | DF(mm) | Bending Strength | ||
| ratio | |||||||
| mm | In | mm | in | mm | |||
| NC31-41(2-7/8IF) | 104.8 | 37994 | 50.8 | 2 | 9150 | 100.4 | 2.43:1 |
| NC35-47 | 120.7 | 38050 | 50.8 | 2 | 9150 | 114.7 | 2.58:1 |
| NC38-50(3-1/2IF) | 127 | 5 | 57.2 | 37260 | 9150 | 121 | 2.38:1 |
| ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ |
| 7-5/8REG | 241.3 | 39815 | 76.2 | 3 | 9150/9450 | 223.8 | 2.81:1 |
| NC70-97 | 247.6 | 39876 | 76.2 | 3 | 9150/9450 | 232.6 | 2.57:1 |
| NC70-100 | 254 | 10 | 76.2 | 3 | 9150/9450 | 237.3 | 2.81:1 |
- Country:
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- Market:
- Founded Year:
- Address:
- Contact:Michelle Zhang
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