A Pipe conveyor — also known as a tubular conveyor or pipe belt conveyor — is a type of belt conveyor in which the belt is formed into a closed circular pipe shape along the carrying run. This design differs from conventional troughed belt conveyors in both its configuration and splicing technology, enabling it to perform specialized conveying tasks.

Mining and industrial applications often require the transport of bulk materials over relatively large inclines and through tight curves, typically in confined spaces and at high mass flow rates. The pipe conveyor addresses these requirements by offering a compact, enclosed conveying path that can navigate complex terrain with minimal environmental impact.

Key Capabilities at a Glance

Maximum incline angle	Up to 30° (depending on material properties)
Minimum horizontal curve radius	As tight as 300 × pipe diameter
Transfer points along route	None — continuous enclosed transport
Material spillage	Eliminated by fully enclosed pipe design
Typical applications	Dusty materials, environmentally sensitive sites, complex terrain routing

How a Pipe Conveyor Works

The belt is troughed at the loading point to receive material, then gradually folded into a pipe shape through a series of transition idler frames. Once fully formed, the belt maintains its circular cross-section along the carrying run. At the discharge end, the belt opens back to a flat configuration to release the material, then returns to the tail end in a flat or slightly troughed state.

The overlapping belt edges are pressed together by the idler frames, creating a sealed tube that contains the material throughout the transport path. This sealing action eliminates material spillage and significantly reduces dust emissions along the conveyor route.

System Configuration

Key Design Features

No transfer points along the route
The pipe conveyor eliminates the need for intermediate transfer stations, reducing infrastructure costs and maintenance points. Material is transported continuously from loading to discharge.

Zero material spillage
The fully enclosed pipe shape prevents spillage along the entire conveyor route, eliminating cleanup costs and reducing product loss.

Tight curve navigation
The system can navigate horizontal curves as tight as 300 times the pipe diameter, allowing it to follow natural terrain, avoid obstacles, and fit into confined spaces.

Steep incline capability
Pipe conveyors can handle inclines up to 30° depending on material characteristics, reducing the overall length of the conveying route compared to multiple shorter conveyors.

Compact footprint
The narrow belt width and triangular idler arrangement result in a smaller cross-sectional profile, saving space in congested plant layouts.

Operating Characteristics

In addition to consistent quality and technical reliability, highly engineered pipe belt conveyor systems offer a range of operational benefits — including reduced maintenance intervals, lower energy consumption per ton conveyed, and compliance with strict environmental regulations.

Optional Safety Components

Belt Sway Switch
Detects belt deviation and triggers an alarm or system shutdown. Deviation can damage the belt and cause safety incidents. Typically installed in pairs.

Pull Cord Switch
Emergency stop device activated by pulling a wire rope. Arranged along the entire conveyor length for immediate access — available in single-sided or double-sided configurations, generally used in conjunction with walkways.

Zero Speed Switch
Monitors belt or drum speed to detect slippage caused by overload, insufficient tension, or worn drive roller lagging. Provides early warning to prevent belt damage.

About the Manufacturer

ZOOMRY has been engineering bulk material handling solutions since 2002, with a 40,000m² production facility and ISO 9001/14001-certified quality systems. The company's product range includes belt conveyors, long-distance curved conveyors, high-angle conveyors, pipe conveyors, stackers, ship loaders/unloaders, and related components. Export markets include Europe, the Americas, Southeast Asia, and South Africa.

Frequently Asked Questions About Pipe Conveyors

What is the difference between a pipe conveyor and a traditional belt conveyor?

The main difference is that the belt in a pipe conveyor is formed into a closed circular pipe shape along the carrying run, while a traditional troughed conveyor remains open. This enclosure allows the pipe conveyor to navigate tighter curves, eliminate spillage, contain dust, and handle steeper inclines.

What is the maximum incline angle for a pipe conveyor?

Pipe conveyors can handle inclines up to 30° depending on material characteristics, such as particle size, moisture content, and flowability. For some materials, steeper angles may be achievable with specialized belt designs.

What is the minimum bending radius for a pipe conveyor?

Horizontal curves can be achieved with a radius as small as 300 times the pipe diameter. For example, a 150mm diameter pipe can navigate a 45-meter radius curve. This capability varies with belt tension and material load.

What materials are suitable for transport in a pipe conveyor?

The system handles a broad range of bulk solids including coal, ore, limestone, clinker, cement, fly ash, grain, and chemicals. The enclosed design is particularly suitable for dusty, fine, or sticky materials, as well as applications with strict environmental requirements.

How does a pipe conveyor prevent material spillage?

The belt is completely closed into a pipe shape from loading to discharge. The overlapping belt edges and pressure from the idler frames create a sealed tube, preventing any material from escaping along the route — eliminating spillage and reducing dust emissions.

What maintenance does a pipe conveyor require?

Routine maintenance includes inspecting idler frames for wear, checking belt edge overlap and sealing, monitoring dust seals, and tracking belt tension. The enclosed design reduces exposure to dust and spillage, which can extend component life compared to open conveyors.

Video: Pipe Conveyor System

On-Site Vulcanizing Service

For long-distance or heavy-duty pipe conveyor installations, on-site belt vulcanizing is often required to ensure a seamless, durable splice. ZOOMRY supplies vulcanizing machines and offers on-site technical support. See our Conveyor Belt vulcanizing page for a detailed step-by-step guide.