The SP300Ultra is a robot built to coat the inside of a pipe without ever sending a worker into a confined space. It travels the bore, carries a rotating spray head, and lays a uniform anti-corrosion or functional lining while retracting at a controlled speed - turning a slow, hazardous manual job into a repeatable, documented process. It covers pipe inner diameters from 300 mm to 1220 mm and working lengths up to 80 m, extendable to 200 m.

 

 

 

 

 

Why Automate the Inside of a Pipe

Internal pipe coating is where manual methods break down. A worker entering a narrow bore needs ventilation, gas testing and a rescue plan - and still produces a film thickness that varies from one metre to the next. The SP300Ultra removes the entry and the variability at the same time.

Three things change when the robot takes the job. First, safety: no person inside the pipe. Second, consistency: the unit holds coating-thickness deviation within about 5% at a steady 0.2-5 m/min travel. Third, rework: an even film passes holiday/spark testing the first time, instead of being ground out and recoated. Because paint flow and head speed are closed-loop controlled, every run is repeatable and recordable - useful when the owner asks exactly how the lining was applied.

How the SP300Ultra Works

The mechanism is deliberately simple, which is what makes it reliable on site.

Path planning: the operator sets the pipe length and diameter, and the unit is programmed to spray in retreat mode - it paints backward so it never travels over wet coating.

Spray execution: a rotating head enters the bore and applies material while moving backward at a constant speed, so the film builds evenly along the full length.

Closed-loop control: the system dynamically adjusts paint flow and nozzle rotation to keep the dry-film thickness uniform, regardless of bore changes within the rated range.

Key Features

Automated operation: path planning, adaptive pipe diameter and one-key start/stop on higher-spec builds reduce the skill needed to run a consistent lining.

Precision: coating-thickness deviation held within about 5%, with travel speed adjustable from 0.2 to 5 m/min to match the coating and pipe size.

Built for site conditions: rated for an operating range of roughly -30 C to 40 C, with an optional explosion-proof configuration for hazardous-area work.

Coatings It Handles

The SP300Ultra is supplied to apply the common internal pipe linings used across petrochemical, municipal and marine service, including solvent-free epoxy, high-build anti-corrosion coatings, coal-tar epoxy, PU polyurethane, 8710, phenolic anti-corrosion, vinyl anti-corrosion and quick-dry enamel. If your specification names a specific lining, confirm viscosity and pot life against the unit's delivery parameters before the run.

Where It Pays Off: Applications

Petrochemical: oil and gas transmission lines and reactor-vessel inner walls where internal corrosion is the failure mode.

Municipal: underground drain pipes and heating-supply pipes that need a continuous anti-corrosion lining.

Shipbuilding: cabin piping and ballast-water lines, where access and consistency are both difficult.

Power: flues and desulfurization (FGD) tower internals subject to wear and chemical attack.

Technical Specifications

The figures below are the standard SP300Ultra configuration. Confirm thickness tolerance and the operating temperature range against the actual unit before specifying.

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Frequently Asked Questions

Q: What pipe diameters can the SP300Ultra coat?

A: Pipe inner diameters from 300 mm to 1220 mm. For bores outside this range, a different model in the SP series should be selected.

Q: How long a pipe can it coat in one run?

A: Up to 80 m as standard, extendable to 200 m with the longer delivery configuration.

Q: Does a worker still need to enter the pipe?

A: No. Remote, automated operation is the core point of the design - the robot coats from outside the bore.

Q: Which coatings can it apply?

A: Common internal linings including solvent-free epoxy, high-build and coal-tar epoxy, PU polyurethane, 8710, phenolic, vinyl and quick-dry enamel.

Q: What power and air supply does it need?

A: 220V +/-10% at 50Hz, with a 0.3 MPa air supply.

Q: Is an explosion-proof version available?

A: Yes - an optional explosion-proof configuration is offered for hazardous-area applications.