<h2>API 7-1 Drill Collars / Spiral Drill Collars for Well Drilling</h2>
<p>GPE Oil Machinery Co., Ltd offers the Drilling Tool Hole Drilling Drill Collar in Blue. This API Drill Collar is available in various types, including Non-Magnetic, Slick, and Spiral. It is designed for use in drilling strings and is available in different sizes, such as the Non-Magnetic Short Drill Collar and the P-550 Non-Magnetic Drill Collar. Made from high-quality materials like 4145h P550 and P530, this 3-meter long Drill Collar is a reliable choice for well drilling.</p>
Drilling Tool Hole Drilling Drill Collar in Blue
The Drill Collar is an essential component of the Bottom Hole Assembly (BHA) used for drilling. It provides weight on the bit and maintains tension in the drillstring. Our GM Drill Collar has received NS-1 certification, ensuring its quality and reliability.
Features and Benefits:
- Manufactured from 4145H modified quenched and tempered steel
- Strict metallurgical specifications followed for consistent hardness
- Hardness range of 285 to 341 BHN and Charpy impact value of 40 ft-lbs
- Evenly distributed hardness guaranteed at 16 points in any section at room temperature
- Connections completed with phosphate coating to protect against elements and prevent galling
- Cold rolled thread roots on API and H-90 connections
- Supplied with pressed steel thread protectors for drill collars equipped with standard connections
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