1. Overview

1.2 Profile
The lock channel profile is made from galvanized or cold-rolled steel, typically 1.0mm thick. It features a U-shaped cross-section with embossed friction dots on the surface to secure greenhouse plastic films. The design improves membrane grip, ensuring durability and stability in agricultural greenhouse applications.
Material: Galvanized Steel / PPGI / Aluminum	Thickness: 1.0 mm
Yield strength: 200 - 350 Mpa	Tensil stress: 200 -350 Mpa

1.3 Production Process

Flow Chart: Hydraulic Decoiler → Entry Guide → Embossing Roller → Roll Former → Hydraulic Cutter → Run-out Table

Process: This line integrates embossing and roll forming into a single step, enhancing friction for greenhouse film locking. The gantry-structured roll former ensures precision and stability. Chain-driven transmission with protective cover guarantees safety and durability. Hydraulic cutting delivers clean, accurate profile lengths.

2. Technical Parameters

2.1 Decoiler
Structure	Stand type
Working Form	Manual, motorized, or hydraulic
Loading Capacity	3T or 5T, customizable
Inner Diameter	Φ450 – Φ550 mm
Out Diameter	1300 mm
Model	DC

2.2 Optional Upgrade: Decoiler
Faster loading, automatic decoiling, reduced labor, higher efficiency, better safety, smoother feeding, suitable for heavy coils, less downtime.
	Stand structure decoiler, motorized	Hydraulic decoiler

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	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

2.9 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

3. Production Line Components

4. Customization Options

We offer customized configurations for this lock channel line, including adjustable embossing roller patterns and depths to optimize friction dots. Chain drive settings can be tailored for production speed and maintenance ease. Hydraulic cutter length and cut modes are customizable for specific client requirements. Control system integration is flexible to support automation needs.

Metalign is a trusted manufacturer specializing in cold roll forming machine production and custom roll forming solutions. Located in Botou City, the heart of China’s roll forming industry, we bring over 30 years of combined technical and engineering experience to every project.

Our team is dedicated to designing and building precision roll forming lines tailored to your profile needs — from roofing and purlin lines to shelving, door frames, highway guardrails, and more. We are known for our practical designs, robust structures, and responsive after-sales support.

With a strong reputation in global markets including North America, Europe, Southeast Asia, and the Middle East, Metalign is committed to helping customers improve efficiency, reduce costs, and gain a competitive edge.