Duplex stainless steel is a special alloy material that combines the microstructures of austenite and ferrite for excellent strength and corrosion resistance, making it an indispensable material for many industrial sectors.

55% aluminum zinc plated steel coil:
The aluminum zinc alloy structure of 55% aluminum zinc coated steel coil is composed of 55% aluminum, 43.4% zinc, and 1.6% silicon solidified at a high temperature of 600 ℃. The entire structure is composed of aluminum iron silicon zinc, forming a dense quaternary crystal. This crystal forms a barrier on the steel plate, effectively preventing corrosion factors from penetrating.

The material requirements for the building itself (roof panels and facade panels) can be categorised into safety properties (impact, wind and fire resistance), housing properties (water, thermal and acoustic insulation), durability (resistance to contamination, weathering and retention of appearance), and type of production and processing (economy, ease of processing, ease of maintenance and repair) Safety and longevity are critical for the building's ultimate owner.

Stainless steel is often classified according to the organisational state: martensitic steel, ferrite steel, austenitic steel, austenitic - ferrite (duplex) stainless steel and precipitation hardening stainless steel and so on. In addition, according to the composition can be divided into: chromium stainless steel, chromium-nickel stainless steel and chromium-manganese-nitrogen stainless steel.

Carbon steel is an iron-carbon alloy with a carbon content of 0.0218 per cent to 2.11 per cent. It is also called carbon steel. Generally also contains a small amount of silicon, manganese, sulfur, phosphorus. Generally, the higher the carbon content in carbon steel, the greater the hardness, the higher the strength, but the lower the plasticity.