Blue 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

Blue Drill Collars for Well Drilling - Color: Blue. Our API 7-1 Drill Collars are designed for efficient well drilling. Made by GPE Oil Machinery Co., Ltd.

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 operations. It provides weight on the bit and maintains tension in the drillstring.

Features and Benefits

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


• Manufactured from 4145H modified quenched and tempered steel for exceptional strength and durability.


• Metallurgical specifications followed to guarantee consistent maximum depth of hardness throughout the entire length.


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


• Connections completed with phosphate coating to protect against external 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, ensuring protection during transportation and storage.