Self-Cleaning Discharge Gate
Our rounded gates conform to the pipe, which acts much like a bomb bay door, so there is no place for your material to become trapped.
Why use a tubular drag conveyor?
A tubular drag conveyor (also called a drag chain conveyor, tube drag conveyor, or chain tube conveyor) moves bulk materials through a fully enclosed pipe casing, helping contain dust, odors, and material while protecting the surrounding work environment. Its flexible design accommodates horizontal and vertical conveying, bends, and multiple inlet and discharge points, allowing a single conveyor to connect multiple stages of your process.
What sets Hapman’s TubePro Conveyor apart?
At the heart of TubePro® is an engineered chain and flight assembly designed to move material reliably through complex conveying paths. Combined with heavy-duty construction and high-torque, low-speed operation, TubePro is built to handle abrasive materials, continuous operation, and starts under load while minimizing wear on conveying components.
Integrate the TubePro™ Tubular Drag Conveyor with other bulk material equipment from Hapman like the Bulk Bag Unloader, Bag Dump Stations, or Bulk Bag Filler for a complete conveying system.
The Hapman Performantee®
Our Performantee is a 100% operational guarantee that you will be fully satisfied with the performance of our equipment, and that it will achieve the specific results for which it was designed and manufactured. If not, we will revise or repair it to deliver the results we promised.
Product Details
Features
TubePro moves up to 50 ft³/min (1.4 m³/min) in a fully enclosed system and is ideal for dense materials above 20 lb/ft³ (320 kg/m³). Actual throughput depends on chain speed, casing diameter, and the material you’re conveying.
Casing
Stainless steel or carbon steel, with Schedule 40 pipe standard and other schedules available based on your application.
Connections
Fully welded, interlocking flanged connections provide rigidity and support straightforward field assembly.
Chain
Multiple chain and flight configurations are selected based on material characteristics, operating conditions, and conveyor routing.
Drive
High-torque, low-speed operation is designed for reliable conveying and dependable starts under load.
Layout
A dozen basic layouts with customizable leg lengths and bend angles, plus multiple inlet and discharge points, fit the conveyor to your process.
Chain & Flight Options
Chain and flight selection depends on your material, operating temperature, and conveyor layout. Hapman engineers will recommend the right combination for your application.
Rivetless Chain + UHMW Flights
Best for general-purpose applications where open-architecture chain is suitable.
Key Benefits
Rugged and dependable, the first choice for many standard applications
Rivetless Chain + Cast Iron Flights
Best for elevated-temperature applications.
Key Benefits
Withstands heat better than polymer flight options
Sealed Pin Chain + UHMW Flights
Best for the widest range of materials, from gritty abrasives to food byproducts.
Key Benefits
Sealing washers keep material out of the chain’s articulating joints
Uni-Seal Chain
Best for layouts with short straight pipe runs between bends.
Key Benefits
A universal center link allows tighter routing near bends
Round-Link Chain
Best for layouts with two closely spaced bends in different planes.
Key Benefits
Highly flexible, versatile, and economical
Additional Options
Chain Hammers
Dislodges material buildup from the chain and flights to reduce carryover.
Brush Box
Removes residual material from the chain and flights to minimize carryover.
Auto-Tensioner
Maintains chain tension automatically and alerts operators when maintenance is needed.
Clean-In-Place
Allows cleaning through integration with an existing CIP system.
Controls
Our in-house engineering team and panel shop supply standard configurations as well as custom packages for automation process optimization.
Case Studies
Industries
Hapman’s engineering team has helped customers with TubePro tubular drag conveyor applications in the following industries:
Chemical & Pharma
Food Industry
Polymers & Plastics
Vivarium Research
Building Products
Mining & Minerals
Power Generation
Wastewater Treatment
Battery Material Handling
Pet Food
Get Started with TubePro
Want to see why TubePro is the best fit for your product? We can also run sample conveying tests on certain materials. Get in touch with our team to customize your specs to exactly what you need.
Want to talk to a technical specialist about your specs for tubular drag conveyors?
Looking for a cable version of the tubular drag conveyor?
Check out our specs for the CablePro™ Tubular Drag Conveyor.
You’ve got questions? We’ve got answers! Check out our FAQs.
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What is a tube drag conveyor?
A tube drag conveyor (also known as a tubular drag chain conveyor) moves bulk material through a fully enclosed pipe using a continuous chain fitted with flights (discs or paddles). It’s a fully sealed alternative to open-trough or belt conveyors, ideal for dusty, fragile, or contamination-sensitive materials.
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How is a chain tube conveyor different from a screw conveyor?
A chain tube conveyor pulls material through the pipe using a moving chain-and-flight assembly, while a screw conveyor uses a rotating auger. Chain tube conveyors tend to be gentler on fragile materials and better suited to complex, multi-point layouts. If you’re specifically looking for a screw conveyor, see our Helix® Flexible Screw Conveyor.
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Can a drag tube conveyor handle multiple discharge points?
Yes. TubePro’s tubular drag conveyors easily adapt with multiple infeed and discharge points, letting you route material to several locations along a single enclosed line.