API 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 Drill Collars for Well Drilling

GPE Oil Machinery Co., Ltd offers a range of API 7-1 Drill Collars for well drilling. Available in sizes from 79.4mm to 279.4mm, these drill collars are designed for durability and performance. Choose from non-magnetic, slick, or spiral options to suit your drilling needs.

GM Drill Collar - Product Description

GM Drill Collar

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

Features and Benefits

• Approved by the NS-1 certification, ensuring quality and reliability.


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


• Strict metallurgical specifications followed, resulting in consistent maximum depth of hardness.


• Hardness range of 285 to 341 BHN and a Charpy impact value of 40 ft-lbs, providing excellent performance.


• Evenly distributed 16 points in any sections at room temperature, ensuring consistent hardness.


• Connections 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, enhancing thread strength.


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