High-Performance 9-Meter Drill Pipe Internal Coating Line: The Ultimate Anti-Corrosion Solution

High-Performance 9-Meter Drill Pipe Internal Coating Line: The Ultimate Anti-Corrosion Solution

For the oil and gas industry, ensuring the internal integrity of drill pipes against abrasive drilling fluids, brine, and high-temperature environments (120°C+) is absolutely critical. Standard coating equipment often struggles with the precision required for long, narrow pipes, leading to uneven thickness and severe sagging.

To overcome these industry bottlenecks, CoatTech Intelligent Equipment is proud to launch our state-of-the-art Automated Internal Pipe Reciprocating Coating System. Specifically designed for the internal heavy-duty anti-corrosion

Core Technological Innovations

1. High-Precision Automatic Reciprocating System
Our professional mechanical engineers have developed a robust reciprocating system utilizing linear guideways and modular slide tables. Driven by a high-quality AC motor and an intelligent control system, it offers adjustable reciprocating speeds (up to 20 m/min) and exceptional precision. Paired with an automatic control gun for remote operation, both the speed and the spraying flow rate are fully adjustable, guaranteeing excellent coating uniformity.

2. LX-1S Aviation-Grade Centrifugal Atomization
The LX-1S internal pipe coating system utilizes a professional pneumatic high-pressure delivery pump to transport the coating material. It is driven by an aviation-grade pneumatic motor that spins a CNC-machined atomizing disk at high speeds. This centrifugal atomization completely resolves the traditional issues of uneven spraying and severe sagging, applying the coating evenly onto the surrounding internal pipe walls.

3. Smart Anti-Sagging Support Architecture
Coating the inside of a 9-meter pipe with an internal diameter as small as 40mm presents a massive mechanical challenge. The CoatTech system is equipped with a customized internal spray gun support platform and a 9.5-meter reciprocating hard rod fixing system. This specifically engineered support mechanism perfectly prevents the long spray lance from sagging, ensuring high-precision, continuous operation without damaging the internal pipe surface.

4. Advanced Precision Curing & Safety Integration
The integrated industrial precision drying oven features a 150mm high-density (120KG/m³) rock wool board insulation and a 304 stainless steel U-type electric heating tube system, providing adjustable temperatures from 150°C to 200°C.

5.Cooling: After the baking process is completed, the system enters an automatic cooling state, activating a dedicated 0.55KW exhaust fan.

Safety First: Equipped with a tricolor indicator light, fan/heating interlock to prevent dry burning, and an electromagnetic door lock that safely engages when the internal temperature exceeds 45℃.

Application Range: Internal coating of drill pipes

Pipe Dimensions: Internal diameter 40-100mm (Outer diameter up to 3" / 76.2mm); Length up to 9 meters.

Workpiece Weight: 100 kg to 250 kg per piece.

Production Capacity: 10 - 15 pipes per hour (80-120 pipes/day).

Supported Coatings: Liquid or powder systems, including Epoxy Phenolic / Novolac (Target DFT: 150–300 µm).

Frequently Asked Questions (FAQ)

Q1: What pipe sizes can this internal coating system handle?
This system is highly practical for internal pipe coating, specifically engineered for pipes with an internal diameter of 40mm to 100mm and a maximum length of 9 meters. It is adaptable to various metal materials, making it ideal for standard oilfield drill pipes.

Q2: How does the system prevent the 9-meter spray lance from sagging and scratching the pipe?
We utilize a highly specialized, customized support platform. The system features a 9.5-meter reciprocating hard rod integrated with a proprietary internal spray gun support mechanism. This design counteracts gravity and operational deflection, keeping the spray lance perfectly centered throughout the entire 9-meter stroke.

Q3: Can it apply heavy-duty coatings like Epoxy Phenolic resins?
Yes. The LX-1S atomization system, combined with our TY20 auto-stirring delivery tank (which features a built-in pneumatic mixer to reduce coating precipitation), is perfectly suited for normal liquids, high-viscosity liquids, or particle-containing heavy-duty anti-corrosion coatings.

Q4: Is the system difficult to operate for new staff?
Not at all. The system is simple to operate and easy to master. It supports both manual and automatic operation modes that can be freely switched. Utilizing an advanced intelligent control system, all complex coating tasks can be completed with a simple one-touch start.

The CoatTech Solution: Seamless Automation & Precision,please click here

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