Rainwater Downpipe Roll Forming Machine | Shengrui - Botou China

Water Downpipe Roll Forming Machine by Botou Shengrui

The Botou Shengrui water downpipe roll forming machine automatically produces metal rainwater downpipes from galvanized (GI) and pre-painted (PPGI) steel coil 0.2 to 0.8 mm thick. The strip is formed through 18 roller stations into a closed downpipe profile, then cut to length by a hydraulic cutter under PLC control. The machine is built by Botou Shengrui Roll Forming Machine Co., Ltd. in Botou, Hebei, China, and is delivered within 45 working days with a one-year warranty.

What Is a Downpipe?

A downpipe, also called a downspout, leader, or rainwater pipe, is the vertical pipe that carries rainwater from a roof gutter down to the ground or into a drain. Metal downpipes are usually round or rectangular, and are made from galvanized or color-coated steel to match the roofing and gutters. A downpipe roll forming machine shapes flat coil into the pipe profile and closes the seam so the pipe is ready to install. Shengrui also offers a downpipe elbow bender to make the curved sections that connect pipes to gutters and walls.

How the Machine Works

1. Decoiling. A 5-ton manual decoiler holds the GI or PPGI coil and feeds the strip into the machine.

2. Roll forming. Eighteen forming stations bend the strip step by step into the downpipe profile and close the seam.

3. Cutting. A hydraulic cutter, powered by a 4 kW pump station, cuts each pipe to the programmed length.

4. Output. Finished downpipes are collected on two run-out tables.

The operator sets pipe length and quantity on the PLC control panel, and the machine runs automatically.

Key Specifications

Material: Galvanized steel (GI) and pre-painted steel (PPGI)
Material thickness: 0.2 to 0.8 mm
Material width: According to the pipe drawing
Forming stations: 18
Shaft diameter: 70 mm
Shaft material: 45# steel, quenched and tempered
Side plate thickness: 16 mm
Main frame: 300 mm H-beam steel
Main motor power: 7.5 kW
Hydraulic pump station: 4 kW
Cutting: Hydraulic
Control system: PLC, Delta electrical components
Decoiler: Manual, 5 tons
Power supply: 380 V, 50 Hz, 3-phase
Machine dimensions: 7.0 × 1.2 × 1.2 m (L × W × H)

Included in the Set
Main roll forming machine, hydraulic cutter, PLC control cabinet, main motor, hydraulic pump station, 5-ton manual decoiler, and two run-out tables

Key Features

Complete production set. The machine ships with the decoiler, hydraulic cutting, PLC cabinet, pump station, and run-out tables, so it's ready to produce downpipes on arrival.

Automatic length control. The Delta PLC cuts pipes to any programmed length and quantity.

Rigid construction. A 300 mm H-beam frame, 16 mm side plates, and 70 mm hardened shafts keep the profile consistent.

Clean cutting. Hydraulic cutting gives a clean pipe end without crushing the profile.

Compact footprint. At about 7 meters long, the machine fits easily into a small workshop.

Custom pipe sizes. The strip width and rollers are designed to the customer's downpipe drawing.

Applications

The machine suits gutter and downpipe manufacturers, roofing sheet producers adding rainwater products, and building material suppliers making downpipes for houses, warehouses, factories, and commercial buildings.

Ordering, Payment, and Warranty

Payment is a 30% T/T deposit, with the 70% balance due after inspection and before shipment. Delivery is within 45 working days after the deposit. The machine comes with a one-year warranty and lifetime technical support. Shengrui supplies an operating manual and a set of wear parts with each machine.

About the Manufacturer

Botou Shengrui Roll Forming Machine Co., Ltd. builds roll forming machines in Botou City, Hebei Province, China. Its range includes roofing sheet, glazed tile, C/Z purlin, light steel frame, sandwich panel, floor deck, shutter door, and guardrail machines. Every machine is tested before shipment, and Shengrui engineers travel abroad for installation.

Frequently Asked Questions

What does a downpipe roll forming machine make?
It makes metal rainwater downpipes from steel coil, forming the pipe profile and cutting it to length automatically.

What thickness steel can the Shengrui downpipe machine use?
It forms GI and PPGI steel from 0.2 to 0.8 mm thick.

How many forming stations does it have?
The machine has 18 forming stations with 70 mm shafts.

What is the motor power?
The main motor is 7.5 kW, and the hydraulic pump station is 4 kW.

What control system does it use?
It uses a PLC control system with Delta electrical components.

How big is the machine?
The machine measures about 7.0 × 1.2 × 1.2 meters.

Can it make downpipe elbows?
Elbows are made on a separate downpipe bender, which Shengrui also offers.

What is the delivery time and warranty?
Delivery is within 45 working days after the deposit, with a one-year warranty and lifetime technical support.

What power supply does it need?
The standard power supply is 380 V, 50 Hz, 3-phase.