Downspout Roll Forming Machine

Zhongyuan downspout roll forming machine is designed for the continuous production of metal downspout profiles used in roof drainage systems, including rectangular, square, round, and customized shapes. its precisely engineered roller dies and stable forming system ensure smooth profile forming, accurate dimensions, and consistent wall thickness. supporting efficient, high-speed operation with reliable cutting performance, the machine is ideal for residential, commercial, and industrial building drainage applications.

Main Technical Parameters

Machine Components & Specifications
No.	Components	Qty.	Key Parameters
1	Manual Decoiler / Electric Decoiler	1 Set	Capacity: 5 tons
			Suitable Coil ID : 508 mm
			Suitable Coil Max OD : 1000 mm
2	Roll-Forming System	1 Set	Number of forming stands: approx. 21 (Subject to the final design)
			Main machine motor power: 7.5 kW(Subject to the final design)
			Forming Speed: about 12-15m/min (without cut time)
3	Hydraulic Stop-and-Cut Unit	1 Set	Cutting Blade material: Cr12MoV tool steel
4	Hydraulic Power Unit	1 Set	Power:：5.5 kW
5	PLC Control System	1 Set	Delta (Taiwan) / Mitsubishi(Japan)
6	Run-Out Table(Non-powered)	2 Pcs	Total is 3 meters
7	weight	about 7045 kg
8	Size	12.3L0.9W1.5H(Subject to the final design)
Coil Technical Parameters
No.	Parameters	Details
1	Raw Material	PPGI steel coils
2	Material Thickness	0.4mm-0.8mm
3	Coil Width	406mm(Subject to the final design)
4	Yield Strength	350Mpa

Downpipe working processing display

1. Decoiling the sheet→feeding sheet→roll forming→Measure length and cutting the sheet→arc bending (optional process)→finished products
2.Downpipe→necking→finished products

Machine Components

1. Manual Decoiler

The loading frame is of bracket type, manually tightened, without power.
Capacity: ≤5t
Inner diameter of coil: φ508mm
Outer diameter of coil: <φ1400mm

2. Main Machine

1) Feeding Device
The feeding device is equipped with left and right guide wheels, and the raw materials can be kept in the correct feeding direction by the feeding device.

2) Roll Forming System: Forming roller material No.45 steel surface plated with hard chrome and then polished
Shaft material is No.45 steel, diameter is 70mm,
The number of roll forming rollers is generally 25 stations.
The machine adopts an integral wall plate structure.
Adopts gear motor drive, chain drive, and frequency conversion;
Adjust screws manually to change the gap between the upper and lower rollers, so that they can fit for different thicknesses of materials.

3) Cutting Device
Adopt a stop to cut.
No waste material per time cutting;
Cutting blade material: Cr12 steel with quenching treatment.
Cutting the power provided by the hydraulic station.

4) Bending Device
This device can be bent into the desired arc of the downpipe, can be bent up and down, or left and right. It needs to replace the mould manually when changing direction.
Bending mould material: Cr12 steel with quenching treatment;
Bending power provided by the hydraulic station.

5) Shrinking Device
This device can reduce the port of the downpipe to facilitate lapping.
Material of Shrinking mould: Cr12 steel with quenching treatment;
Shrinking power is provided by the hydraulic station.

3. Run Out Table

They are used to put the final product when product finish.
1 pieces, length is 2 meters.
Collect the final product and final products is convenient to be stacked by workers.

4. Electric Control System

The whole set of equipment adopts Mitsubishi frequency converter, PLC and touch screen, coding machine counting, can be manually and automatically controlled.

5. Hydraulic System

Adopts external independent hydraulic station;
The main valves are Chinese brands.

Typical Profiles

Downspout roll forming machine-FAQ

What is a downspout roll forming machine?
A downspout roll forming machine continuously forms metal coil into downspout (downpipe) profiles used in roof drainage systems. Precisely engineered roller dies and a stable forming system ensure smooth profile forming, accurate dimensions and consistent wall thickness, for residential, commercial and industrial building drainage applications.

What material does the downspout machine process?
The machine processes PPGI steel coil from 0.4 to 0.8 mm thick with a yield strength of 350 MPa, at a coil width of 406 mm (subject to the final design), fed from a 5-ton decoiler with 508 mm coil inner diameter.

Can the machine bend and neck the downspout?
Yes. Two dedicated devices come with the line: a bending device that arcs the downpipe up, down, left or right (Cr12 quenched moulds, hydraulic power, manual mould change for direction), and a shrinking device that reduces the pipe port to facilitate lapping — both powered by the hydraulic station.

What components does the complete line include?
The complete line includes: a 5-ton manual decoiler, feeding device with guide wheels, roll forming system with No.45 steel rollers plated with hard chrome and polished on 70 mm shafts, stop-to-cut device with Cr12 quenched blades (no waste material per cut), bending and shrinking devices, a 2-meter run-out table, and a Mitsubishi frequency converter, PLC and touch screen control system with encoder counting, supporting both manual and automatic modes.

How large and heavy is the machine?
The downspout roll forming machine weighs about 7,045 kg and measures approximately 12.3 m long × 0.9 m wide × 1.5 m high (final design subject to the profile), with an external independent hydraulic station.