1.1 Production Line | ||
This roll forming production line targets manufacturers of metal square downspouts. Ideal for residential, commercial, and industrial drainage systems, it provides high-quality embossed and lock-edge pipes. The chain-driven, wall-frame machine ensures stable, continuous production with high precision, reduced labor, and versatile customization for diverse markets. |
1.2 Profile | |
The square downspout pipe is made from 1.2-2.0mm galvanized steel, formed via cold roll forming. Features embossed ribs for added strength and exterior lock edges for tight sealing. Suitable for rainwater drainage in residential, commercial, and industrial buildings. Customizable lengths, rib patterns, and profiles enhance structural rigidity and aesthetic appeal. | |
Material: Galvanized Steel / PPGI / Aluminum | Thickness: 0.3-0.8mm |
Yield strength: 200 - 350 Mpa | Tensil stress: 200 -350 Mpa |
| |
1.3 Production Process | |
Flow Chart: Decoiler → Guide → Roll Forming Machine → Hydraulic Cutter → Out Table | |
Process: Steel coil feeds through guide rollers into the wall-frame, chain-driven roll former. Early forming stations emboss ribs to enhance strength. Subsequent stations shape square profiles with precise exterior lock edges. Hydraulic cutter accurately trims lengths. Out table collects finished pipes. This process ensures high precision, structural integrity, and consistent production efficiency. |
1.4 Key Focus | |
Wall-frame, chain-driven roll former ensures stable, long-term operation and minimal maintenance. | |
Embossed ribs improve pipe rigidity and resistance to bending or compression. | |
Exterior lock edges enhance sealing, weatherproofing, and wind resistance. | |
Hydraulic cutting delivers precise, consistent pipe lengths with reduced material waste. | |
High automation reduces labor, increases output, and allows flexible customization. |
2.1 Decoiler | ||
Structure | Double-support | ![]() |
Working Form | Manual, motorized, or hydraulic | |
Loading Capacity | 5T/7T/10T, customizable | |
Coil Width | 1250mm, customizable | |
Inner Diameter | Φ450 – Φ550 mm | |
Out Diameter | 1500 mm | |
Model | DC-MU1 |
2.2 Optional Upgrade: Decoiler | ||
![]() | ![]() | ![]() |
Motorized Decoiler | Stand structure decoiler, motorized or hydraulic | Hydraulic decoiler with loading car |
2.3 Guiding Device With Pre-Cut Broaching Shear | ||
Guiding Roller | Adujust the coil feeding width | ![]() |
Pre-cut Broaching Shear | Cut the steel coil before roll forming | |
Digital Display | See the feeding width directly |
2.4 Roll Forming Machine | ||
Working Speed | Around 20 m/min | ![]() |
Structure | Wall panel type. Optional: Cast-iron stands or guide pillar | |
Driving System | Chain system. Optional: Gearbox | |
No. of Forming Stations | 18 stands | |
Shaft Diameter | 70mm solid shaft | |
Motor Power | 5.5 Kw | ![]() |
Roller Material | 45# steel polished and chromed HRC58-62° | |
Shaft Material | High grade 45# steel polished(CNC lathe) | |
Steel Coil Material | PPGI or GI | |
Steel Coil Thickness | 0.25-0.8mm |
2.5 Optional Upgrade: Cover | ||
![]() | ![]() | ![]() |
Mounted On The Inside: No Cover Required | Solid Cover For Chain | Mesh Safety Cover |
2.6 Cutter | ||
Common Power Type | Hydraulic. Optional: motor type. | ![]() |
Hydraulic Power | 4-5.5Kw, customizable | |
Blade Material | Cr12 Mov | |
Hardness | With quenched treatment HRC 58 – 62° |
2.7 Product Collection | |||
Solution 1 | Run-out table | Solution 2 | Auto stacker |
Power Type | Non-powered, mainly manual handling | Power Type | Motorized, 3Kw |
Dimension | Length 4m, customizable | Dimension | Length 4m-6m, customizable |
![]() | ![]() |
2.8 PLC Control Cabinet | |||
PLC Brand | Delta, customizable | Power Supply | 380v, 50HZ, 3Phase (It depends on customer requirement) |
Encoder Brand | Omron, customizable | Language | Chinese + English, Spanish, French, Russian, etc |
Touch Screen | MCGS, customizable | Operation type | Manual /auto two-type switch |
Hanging Arm Type | Saving Space | Standing Type | greater component integration and flexible positioning |
Hanging-Arm Control Box | Standing Control Box |
2.9 Hydraulic Power Unit (HPU) | ||
Motor Power | 5.5Kw | ![]() |
Oil Required | N32 or N46 hydraulic oil is available | |
Design | The hydraulic station has a fan cooling system | |
Optional | It can be installed on or inside the roll former to save space |
2.10 Analysis | |
Decoiler | Smooth coil feeding, adjustable for multiple widths. |
Reduces material waste, ensures stable tension control. | |
Guide | Aligns steel into forming machine precisely. |
Minimizes deviation and ensures dimensional accuracy. | |
Roll Forming Machine | Wall-frame structure ensures rigidity and stability. |
Chain-driven for continuous, reliable operation. | |
Early stations emboss ribs for increased strength. | |
Exterior lock edges improve sealing and wind resistance. | |
Hydraulic Cutter | Provides accurate length cutting for consistent products. |
Reduces material waste, adaptable to multiple thicknesses. | |
Out Table | Collects finished pipes safely and efficiently. |
Optional automated stacking reduces labor and enhances safety. |
Component | Quantity |
Hydraulic Decoiler | 1 set |
Roll Former | 1 set |
Hydraulic Cutter | 1 set |
Out Table | 2 sets |
PLC Cabinet | 1 set |
Hydraulic Station | 1 set |
Customers can customize embossing patterns, lock-edge styles, pipe dimensions, thickness (1.2-2.0mm), production speed, and hydraulic cutting lengths. Optional features include automated stacking on out tables, adjustable forming stations for different square sizes, and integration of pre-punched holes for downspout accessories or connectors.