Spiral Drill Collars for Hole 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

API 7-1 Drill Collars / Spiral Drill Collars for Well Drilling

Introducing our high-quality Spiral Drill Collars for efficient hole drilling. These blue-colored, API certified drill collars are non-magnetic and durable. With a spiral design, they are flexible and perfect for heavy-duty drilling. Available in various sizes, our drill collars meet API standards and are manufactured by GPE Oil Machinery Co., Ltd. Choose our reliable and long-lasting drill collars for your drilling needs.

GM Drill Collar - Product Description

GM Drill Collar

GM Drill Collar is the fundamental component in the Bottom Hole Assembly (BHA) used for drilling. It provides weight on the bit and maintains tension in the drillstring. Manufactured by GPE Oil Machinery Co., Ltd, GM Drill Collar has received NS-1 certification, ensuring its quality and reliability.

Features and Benefits

• Manufactured from 4145H modified quenched and tempered steel.


• Strict metallurgical specifications are followed to ensure consistent maximum depth of hardness during full-length heat treatment.


• 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 with 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.

Experience the superior performance and durability of GM Drill Collar for your drilling operations.