Non-Magnetic Drill Collars for Well Drilling - Color: Blue

• After-sales Service: 24/7
• Warranty: 1 Years
• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Model NO.: 4130
• Name: Drill Collar
• Color: Blue
• Transport Package: Export Packing
• Specification: 79.4mm -279.4mm
• Production Capacity: 150000

Product Description

API 7-1 Drill Collars / Spiral Drill Collars for Well Drilling

GPE Oil Machinery Co., Ltd offers non-magnetic drill collars for well drilling. These blue-colored drill collars are API certified, heavy-duty, and corrosion-resistant. They are essential drilling tools for hole drilling in the oilfield.

GM Drill Collar - Product Description

GM Drill Collar

The GM Drill Collar, manufactured by GPE Oil Machinery Co., Ltd, is the essential component in the Bottom Hole Assembly (BHA) used for drilling. It provides weight on the bit and ensures the drillstring remains in tension throughout the drilling process.

Features and Benefits:

• Approved by NS-1 certification for superior quality and performance.


• Made from 4145H modified quenched and tempered steel, ensuring durability and reliability.


• Strict metallurgical specifications are followed to achieve consistent maximum depth of hardness.


• Hardness range of 285 to 341 BHN and a Charpy impact value of 40 ft-lbs guaranteed at evenly distributed 16 points in any sections at room temperature.


• Connections are completed with a phosphate coating, protecting them from the elements and preventing galling upon initial make-up.


• Thread roots are cold rolled on API and H-90 connections, ensuring secure and reliable connections.


• Supplied with pressed steel thread protectors for all drill collars equipped with standard connections, providing additional protection.

Choose GM Drill Collar for its exceptional quality, durability, and performance. Trust in GPE Oil Machinery Co., Ltd for all your drilling needs.