Non-Magnetic Drill Collars for Well Drilling - 79.4mm - 279.4mm

• 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 for Well Drilling

Discover our high-quality Non-Magnetic Drill Collars for efficient well drilling. Available in sizes ranging from 79.4mm to 279.4mm, these API certified collars are perfect for oilfield operations. Choose from various options including slick, spiral, and flex drill collars. Trust GPE Oil Machinery Co., Ltd, your reliable supplier of drilling tools.

GM Drill Collar

GM Drill Collar, manufactured by GPE Oil Machinery Co., Ltd, is the essential component in the Bottom Hole Assembly (BHA) for drilling operations. It provides weight on the bit, ensuring efficient drilling and maintaining tension in the drillstring.

Features and Benefits

• Approved by NS-1 certification, guaranteeing high-quality standards.


• Constructed from 4145H modified quenched and tempered steel for superior durability.


• Strict metallurgical specifications followed to ensure consistent maximum depth of hardness throughout the entire drill collar.


• 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 completed with a phosphate coating to protect against the elements and prevent galling during initial make-up.


• Cold-rolled thread roots on API and H-90 connections for enhanced thread integrity.


• Supplied with pressed steel thread protectors for all drill collars equipped with standard connections.