In a recent interview, Zhang Gong, Technical Director of Hegang Steel, stated:

For high-salt and alkaline photovoltaic mounting systems: We recommend a dual-coating solution of S550GD+Z+AZ150. A 120μm galvanized layer triples the lifespan.

For extremely cold weather pipelines: Ceq ≤ 0.42%, 316L molybdenum content ≥ 2.8%, and -50°C impact energy ≥ 80J are required.

For Middle Eastern architectural color coatings: A PVDF resin content ≥ 70% is key, combined with a 2000-rpm sand-resistant coating (the national standard is 500 rpm) to achieve a 15-year warranty.