Steel Procurement Guide

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Steel Selection

Steel Selection

Carbon Steel
Q235B: General construction and inland projects.
Q355: Heavy-duty structures, bridges, and machinery.
Check: Thickness tolerance, flatness, cracks, rust, and surface quality.

Galvanized & Color-Coated Steel
80g/m²: General inland outdoor use.
120–275g/m²: Coastal and rainy environments.
PPGI/PVDF: Exterior facades and high-weatherability applications.
Stainless Steel
201/304: General indoor and freshwater applications.
316: Coastal, seawater, and chemical environments.