Galvanized Steel Strip Coils for Roller Shutters

Galvanized steel coils have become the material of choice for roll-up doors because they successfully combine the mechanical strength of steel, the electrochemical corrosion protection of the zinc coating, excellent cold-forming properties, and cost-effectiveness.

Wanzhi Steel is a manufacturer specializing in the production of galvanized steel coils, with its own production lines. We also have cutting and slitting equipment and can supply galvanized flat sheets and galvanized steel strips. Please feel free to contact us with any inquiries.

Galvanized Steel Coil Specifications

How are Galvanized Steel Coils Made into Roller Shutters?

• First, the galvanized steel coil is cut. Before cutting, the dimensions of the door panel to be manufactured must be measured, and the coil is then precisely cut into galvanized flat sheets of the required length.
• The cut galvanized steel sheets are then slit on a slitting machine into narrow strips of uniform dimensions.
• These strips are then fed into a roll forming machine, where multiple shaping rollers press them into a trapezoidal structure.
• The processed galvanized sheets have evenly spaced notches on both sides, which facilitate subsequent assembly. Once all processing is complete, assembly can begin.
• Once the roller shutter panels are assembled, several traction devices are installed at the top of the intended installation site to pull and close the door, ensuring the entire door panel operates in sync.

Roller shutter door being assembled

Assembly complete

Galvanized steel is the primary material used for roller shutters. You can purchase galvanized steel coils and cut them into narrow steel strips yourself, or you can directly purchase pre-cut galvanized steel strips. Galvanized steel strips are more expensive than galvanized steel coils because they involve an additional processing step. Generally, roller shutter manufacturers purchase galvanized steel strips directly for continuous, automated production, which results in higher production efficiency.

Why Galvanized Steel Coils Are Suitable for Roller Shutters

• Straight and Flat Profile: After rolling, galvanized steel coils ensure that the slats remain distortion-free, do not skew, and do not jam.
• Uniform Thickness: Slats made from galvanized steel coils have consistent interlocking gaps, resulting in better door sealing performance.
• Uniform Zinc Coating: The zinc coating on galvanized steel effectively blocks corrosive agents, preventing rust and red rust over long-term use and extending the door’s service life.
• Easy to Form: Galvanized steel is easy to process and suitable for continuous high-speed rolling, resulting in high production yields.
• Post-Treatment Compatibility: Galvanized steel can be directly treated with electrostatic powder coating, baking paint, or lamination, offering strong adhesion.

galvanized steel coil

galvanized steel strip

Wanzhi Steel: China’s Leading Manufacturer of Galvanized Steel Coils

• With over 15 years of experience, we operate two production lines, including a slitting line and a shearing line, enabling us to offer a wide range of products.
• Through years of integrity-driven operations, we have exported to over 120 countries, including Russia, Kazakhstan, Iran, Brazil, and Saudi Arabia.
• We have obtained multiple certifications, including ISO 9001, ISO 14001, and CE, and have successfully passed third-party inspections (such as SGS).

Wanzhi Steel’s lovely customers and friends

We consistently prioritize integrity in our business operations, which has earned us a large base of loyal customers. By choosing us, you are choosing a long-term, reliable supplier. If you have any needs for galvanized steel products, please contact us for more details.