Spiral Drill Collars for Hole 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 / Spiral Drill Collars for Well Drilling

Introducing our Spiral Drill Collars for Hole Drilling, available in sizes ranging from 79.4mm to 279.4mm. These non-magnetic drill collars are essential drilling tools, designed to meet API 7-1 standards. Choose from options like Flex Drill Collars, Nmdc Non Magnetic Drill Collars, and more. Perfect for all your drilling needs!

GM Drill Collar - Product Description

GM Drill Collar

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

Approved by the NS-1 certification, our GM Drill Collar is made from high-quality 4145H modified quenched and tempered steel. We strictly adhere to metallurgical specifications to ensure consistent and maximum depth of hardness throughout the entire length of the drill collar.

Features and Benefits:

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


• Connections are completed (phosphate coated) to protect them from the elements after machining and prevent galling during initial make-up.


• Thread roots are cold rolled on API and H-90 connections.


• All drill collars equipped with standard connections are supplied with pressed steel thread protectors for added protection.

Choose GM Drill Collar for superior performance and reliability during drilling operations. Trust GPE Oil Machinery Co., Ltd for top-quality oilfield equipment.