SP300 Manual-Pull Internal Pipe Coating Machine | 360° Spraying

 

The SP300 Manual-Pull Internal Pipe Coating Machine is independently developed for applying anti-corrosion coatings to the inner walls of industrial pipelines. Designed for pipes with internal diameters ranging from 300 mm to 1400 mm, it provides a practical solution for pipeline coating, maintenance, and surface protection projects.

Unlike conventional equipment that uses a pneumatic motor to rotate the spraying mechanism, the SP300 adopts a servo motor-driven rotating shaft. This design enables controlled 360° rotation and helps achieve more consistent spraying movement without relying on variations in airflow for rotational drive.

Combined with high-pressure airless atomization and a manual-pull travel system, the SP300 is suitable for projects requiring internal pipeline coating across a range of pipe sizes and coating materials.

 

 

• Servo Motor-Driven Rotation

The rotating shaft is powered by a servo motor, providing controlled 360° rotation. Compared with traditional pneumatic motor-driven rotation, this design is less affected by changes in airflow, helping improve control over the spraying process and coating distribution.

• 360° Internal Spraying Coverage

The rotating spraying mechanism is designed to distribute coating material around the inner circumference of the pipe. This helps operators cover the internal pipe surface through a controlled rotational spraying process.

• High-Pressure Airless Atomization

The SP300 uses high-pressure airless atomization to apply coating materials. This spraying method supports the application of various industrial anti-corrosion coatings according to their material properties and project requirements.

• Manual-Pull Travel Design

The machine uses a manual-pull movement structure. This provides a straightforward operating arrangement for internal pipe spraying tasks without describing the equipment as a fully automatic self-propelled robot.

• Industrial-Grade Rotating Bearing

The equipment features an industrial-grade rotating bearing designed to support the rotating assembly during operation. Its updated structural and exterior design also contributes to the overall equipment configuration.

• Wide Pipe Diameter Compatibility

With an applicable internal pipe diameter range of 300–1400 mm, the SP300 can be used across different medium- and large-diameter pipeline coating projects.

 

Parameter	Specification
Product Model	SP300
Power Supply	220V
Applicable Pipe Diameter	300–1400 mm (Inner Diameter)
Air Supply Requirement	≥0.3 MPa
Travel Method	Manual-Pull
Atomization Method	High-Pressure Airless Atomization
Standard Working Length	1–15 m
Spraying Pattern	360° Rotational Spraying
Rotating Drive	Servo Motor

 

 

The SP300 is designed to work with a range of industrial protective and anti-corrosion coatings.

Listed compatible coating materials include:

Solvent-Free Epoxy Coatings

High-Build Anti-Corrosion Coatings

Epoxy Coal Tar Coatings

Polyurethane (PU) Coatings

8710 Protective Coatings

Phenolic Anti-Corrosion Coatings

Vinyl Ester Anti-Corrosion Coatings

Quick-Drying Enamel

The suitability of each coating depends on its viscosity, application requirements, and compatibility with the spraying system. Material specifications should be confirmed before operation.

 

 

The SP300 combines servo-driven rotation, high-pressure airless atomization, and manual-pull movement to apply protective coatings to the internal pipe surface.

Step 1: Equipment Preparation

Prepare the SP300 according to the target pipe diameter and coating material. Connect the required power and compressed-air supply, and prepare the coating delivery system.

Step 2: Positioning Inside the Pipeline

Position the spraying assembly inside the pipeline and check that the equipment is correctly arranged for the required working section.

Step 3: Servo-Driven 360° Spraying

The servo motor drives the rotating shaft through a 360° rotation. At the same time, the high-pressure airless spraying system delivers coating material to the internal pipe surface.

Step 4: Manual-Pull Movement

The operator controls the equipment's movement by pulling it through the pipeline. The combination of rotational spraying and manual movement allows coating application along the internal pipe wall.

Step 5: Coating Inspection

After spraying, inspect the coated surface according to the project's coating specifications, including coverage, film thickness, and surface appearance.

 

 

The SP300 Manual-Pull Internal Pipe Coating Machine can be considered for various industrial pipeline coating applications.

Oil and Gas Pipelines: Internal anti-corrosion coating projects for applicable pipeline sections.

Water Supply Pipelines: Protective coating applications for suitable water pipeline systems.

Municipal Pipeline Projects: Internal surface protection for applicable municipal pipeline infrastructure.

Petrochemical Pipelines: Coating operations involving industrial pipelines exposed to demanding service environments.

Industrial Pipeline Maintenance: Internal coating and rehabilitation projects where the pipe dimensions and coating requirements match the equipment specifications.

The coating system should always be selected according to the pipeline's operating medium and service conditions.

 

 

Choosing the right internal pipe coating equipment can influence the efficiency and consistency of pipeline surface protection work.

The SP300 offers several practical design features:

Servo motor-driven rotating shaft for controlled rotation.

360° rotational spraying for internal pipe surface coverage.

High-pressure airless atomization technology.

Manual-pull movement structure.

Applicable pipe inner diameter from 300 mm to 1400 mm.

Compatibility with multiple listed industrial anti-corrosion coatings.

Industrial-grade rotating bearing design.

These features make the SP300 a practical option for contractors and industrial users looking for internal pipe coating equipment with a manually controlled travel arrangement.

 

 

Q1: What pipe diameters can the SP300 handle?

The SP300 is designed for pipelines with internal diameters ranging from 300 mm to 1400 mm.

Q2: Is the SP300 fully automatic?

No. The SP300 uses a manual-pull travel structure. Its rotating shaft is servo motor-driven, while the equipment's movement through the pipeline is manually controlled.

Q3: What spraying technology does the SP300 use?

It uses high-pressure airless atomization combined with a servo-driven 360° rotating spraying mechanism.

Q4: What is the standard working length?

The listed standard working length is 1–15 meters. Please contact us if your project requires a different working arrangement.

Q5: What coating materials can be used?

Listed materials include solvent-free epoxy, high-build anti-corrosion coatings, epoxy coal tar, polyurethane, 8710 protective coatings, phenolic coatings, vinyl ester coatings, and quick-drying enamel. Compatibility should be confirmed for the specific material.

Q6: What power and air supply are required?

The SP300 requires a 220V power supply and an air supply of at least 0.3 MPa.

 

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