What input diameters can it ovalize?

Round spiral duct from 100mm to 800mm input diameter — the range your existing tubeformer produces.

What material thickness does it handle?

0.5-1.2mm — the standard spiral duct gauge range, so it processes the same duct your tubeformer makes.

Is the oval ratio adjustable?

Yes — the oval ratio is adjustable, so the flat oval profile is set to what the installation requires rather than a fixed supplier size.

Do I need a separate machine to make the round duct first?

Yes — the ovalizer works downstream of a spiral tubeformer. Round duct is produced on your tubeformer, then fed into the PDTY-3000 to be ovalized. This is the economical route: flat oval capability added to the spiral production you already run.

When is flat oval duct used instead of round?

Where the ceiling void or wall space is too shallow for round duct — corridors, retrofits and tight ceiling spaces in commercial buildings. Flat oval keeps the cross-sectional area while fitting the shallow profile.

Hydraulic Flat Oval Duct Machine PDTY-3000 - detailed view

Spiral Duct Machines

Hydraulic Flat Oval Duct Machine PDTY-3000

Last updated: October 14, 2026

$9,800

Ovalizer that transforms round spiral duct into flat oval shape for space-constrained installations. Hydraulic drive with adjustable oval ratio — the machine that turns your round duct production into flat oval capability.

Technical Specifications

ModelPDTY-3000

Input Diameter100-800 mm

Material Thickness0.5-1.2 mm

Motor Power4 kW

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What is a Hydraulic Flat Oval Duct Machine PDTY-3000?

A flat oval duct machine (ovalizer) takes round spiral duct and reshapes it into a flat oval profile. The flat oval form fits the shallow ceiling and wall spaces where round duct will not go — corridors, tight ceiling voids and retrofits. It runs downstream of a spiral tubeformer: round duct is produced first, then ovalized to the profile the installation requires.

Key Features

Transforms round spiral duct into flat oval profile
Input diameter range 100-800mm from your existing tubeformer
Handles 0.5-1.2mm material — the standard spiral duct gauge range
Adjustable oval ratio for the profile the installation needs
Hydraulic operation, 4kW motor

Round Duct Will Not Fit the Ceiling Void?

Round duct needs depth — and modern buildings do not always have it. Corridors, retrofits and tight ceiling voids demand flat oval profiles that a tubeformer alone cannot produce.

The PDTY-3000 ovalizes your existing round duct production into flat oval: 100-800mm input diameters, adjustable oval ratio, hydraulic drive — flat oval capability added to the spiral line you already run.

How It Transforms Your Production Line

The Hydraulic Flat Oval Duct Machine PDTY-3000 works on a proven principle — here is the step-by-step workflow that makes it possible:

Round Duct Feed

Round spiral duct from your tubeformer is fed into the ovalizer.

Ovalizing

Hydraulic rollers progressively reshape the round section into the flat oval profile.

Ratio Setting

The oval ratio is adjusted to the profile the installation requires.

Flat Oval Out

Finished flat oval duct discharges ready for flanging and fitting attachment.

Technical Specifications & Performance Data

Every specification on this machine is chosen for a reason. The table below shows not just the numbers, but what each one means for your daily production:

Parameter	This Machine	What It Means for You
Control System	Hydraulic operation	Consistent, repeatable operation with minimal operator training
Construction	Heavy-duty steel frame	Vibration-free operation, 10+ year service life
Certification	CE certified	Meets European safety and quality standards
Warranty	2 years	Peace of mind with comprehensive factory warranty

Problems Solved: Before vs. After

We asked HVAC fabricators about their biggest production headaches. Here is how this machine directly addresses each one:

Without This Machine	With This Machine
✕ Round duct too deep Round sections will not fit shallow ceiling voids	✓ Flat oval profile Shallow oval sections fit where round cannot
✕ Bought-in oval duct Pre-made oval duct is expensive and size-limited	✓ Ovalize in-house Any oval ratio from your own round duct production
✕ Fixed profiles Supplier oval sizes do not match your designs	✓ Adjustable oval ratio The profile the installation requires
✕ Separate oval line A dedicated oval production line is a second investment	✓ Add-on ovalizer Flat oval capability added to your existing line

Where It Fits in Your Factory

This machine is versatile enough to serve multiple production scenarios. Here are the most common configurations our customers use:

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Space-Constrained Buildings

Corridors, tight ceiling voids and retrofit spaces where round duct will not fit.

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Existing Spiral Lines

The add-on station that turns round duct production into flat oval capability.

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Custom Profiles

Adjustable oval ratio for the profile each installation requires.

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Cost-Effective Oval

Ovalize in-house instead of buying pre-made oval duct at a premium.

Frequently Asked Questions

Click each question to see the answer. These are the questions our sales engineers hear most often:

Preda Care

After-Sales That Never Expires

We know what keeps you up at night: "What if the machine breaks down and nobody helps me?" With Preda Care, that fear is gone. We stand behind every machine — not just for the warranty period, but for the entire lifecycle of your equipment. Years from now, when you need a spare part or technical advice, we will still be here.

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Global Agent Network

Local service partners in 30+ countries. Get on-site support in your time zone, in your language. No waiting for a technician to fly in from China.

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Free Spare Parts Shipping

Wear parts fail — it is normal. We ship replacement parts worldwide by express courier, free of charge during warranty. Even after warranty, parts are at factory cost with fast shipping.

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Remote PLC Diagnostics

PLC or program issue? Our engineers connect directly to your machine via secure remote access. Most software problems are resolved within 2 hours — no service call, no downtime waiting.

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24-Hour Response Guarantee

WhatsApp, WeChat, or email — our technical team responds within 24 hours, every day of the year. Urgent issues get priority attention. You are never left waiting.

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Lifetime Technical Support

Warranty expires — our support does not. Need advice on maintenance, troubleshooting, or upgrades 5 or 10 years from now? We are still just a message away.

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Free Operator Training

Every machine includes comprehensive video training, operation manuals, and remote setup assistance. New operators? We train them too — at no extra cost, anytime.

Talk to Our Support Team → WhatsApp/WeChat: +86-18355321923 | jason@predamachine.com

Professional Packaging & Global Shipping

Every machine is professionally packaged and secured in a container for safe delivery to your port. We send you loading photos before the ship sails.

Overhead crane lifting machine for loading

Securing machine inside shipping container

✓ Wooden crate packaging ✓ Stretch film wrapping ✓ Container reinforcement ✓ Loading photos provided

Calculate Your Return on Investment

Based on average industry data, here is what a typical customer saves after installing this machine:

40-60%

Labor Cost Reduction

5-10x

Output Increase

6-12 months

Typical Payback Period

5-10%

Material Waste Reduction

* Figures based on average customer data for a shop producing 100-500 bends per day. Your actual results will vary based on production volume, labor rates, and current efficiency levels. Contact our engineers for a customized ROI calculation based on your specific operation.