Blue Drill Collars for Well Drilling - Specification: 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 Blue Drill Collars for Well Drilling, available in sizes ranging from 79.4mm to 279.4mm. These high-quality drill collars are designed to meet API 7-1 standards and are perfect for hole drilling. Choose from non-magnetic, slick, or spiral options to suit your drilling needs. Trust GPE Oil Machinery Co., Ltd for reliable drilling tools.

GM Drill Collar - Product Description

GM Drill Collar

Product Description

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

Features and Benefits

• Approved by the NS-1 certification.


• Made from 4145H modified quenched and tempered steel.


• Metallurgical specifications ensure 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 to protect them from the elements and prevent galling upon initial make-up.


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


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

For reliable and high-quality drill collars, choose GM Drill Collar by GPE Oil Machinery Co., Ltd.