Q345 G550 1250mm Galvanized Corrugated Roofing Sheet for Building Material

１．Product Overview

Q345 G550 galvanized corrugated roofing sheet is designed for roofing systems, wall cladding, warehouses, steel structure buildings, industrial plants, and construction material applications.

The product combines galvanized corrosion protection with corrugated structural strength. The 0.5mm thickness, big spangle surface, and 180g/m² zinc coating provide practical durability for outdoor building applications.

２．Technical Solution

The roofing sheet is manufactured from galvanized steel with hot dipped zinc coating technology. The zinc layer helps improve corrosion resistance and extends service life in construction environments.

Surface treatment options including skin-passed, non skin-passed, and chromated finishes support different appearance, processing, and storage requirements. Corrugated forming improves sheet rigidity and load performance during installation.

３．Specifications

４．Application

The galvanized corrugated roofing sheet is suitable for industrial buildings, warehouses, steel structure housing, roofing systems, wall systems, workshops, storage buildings, agricultural structures, and general construction projects.

５．Processing

The product can be supplied with customized thickness, width, length, zinc coating, spangle type, and surface treatment according to project requirements.

Processing services include corrugating, galvanizing, cutting, painting, oil coating, bundling, and export packing.

６．Advantages

• 180g/m² zinc coating for corrosion resistance
• Corrugated profile for improved structural rigidity
• Big spangle galvanized surface appearance
• Multiple surface treatment options available
• Suitable for roofing and wall cladding systems
• Stable quality and export standard packing
• Available for industrial and commercial construction

７．How to Choose

• Choose higher zinc coating for outdoor or humid environments requiring longer corrosion protection.
• Choose skin-passed surface for flatter appearance and improved processing consistency.
• Confirm required width, thickness, corrugation profile, and surface treatment before production.
• Select appropriate sheet length based on roofing structure and installation requirements.

８．FAQ

Q1．What steel grades are available
G550 and Q345 grades are available.

Q2．What is the zinc coating range
The zinc coating range is 20–275g/m², and the listed product uses 180g/m².

Q3．What thickness can be supplied
The product thickness range is 0.12mm–1.2mm, with 0.5mm listed for this model.

Q4．What surface treatments are available
Skin-passed, non skin-passed, chromated, galvanized, painted, transparent oil, and anti-rust oil surface treatments are available.

Q5．What applications are suitable for this product
It is suitable for roofing systems, wall cladding, warehouses, steel structure housing, industrial buildings, and general construction projects.