Material Grades | Corrosion-sensitive environments | Q235B (Industry Standard) ▲ Q235B + SS304 (Base) ▲▲ Q235B + SS304 + SS316 (Advanced) (ASTM A537 compliant) | Base offers SS304 for moderate corrosion; Advanced adds SS316 for harsh conditions | Higher grades increase material costs by 15-30% compared to Q235B |
Certifications | Global projects with strict regulations | ISO 3834 (Industry) ▲ RoHS (Base) ▲▲ RoHS + ISO 14001 (Advanced) (EU directives compliant) | Base meets EU environmental norms; Advanced ensures full sustainability compliance | Advanced requires additional third-party audits for ISO 14001 |
Flange Thickness | Heavy industrial structures | 4.5–15mm (Industry) ▲ 4.5–23mm (Base) ▲▲ 4.5–25mm (Advanced) (ISO 19982 compliant) | Base accommodates heavier loads; Advanced maximizes load capacity for critical applications | Thicker flanges increase material costs by ~20% per mm increment |
Maximum Length | Large-span bridges/warehouses | Up to 10m (Industry) ▲ 12m (Base/Advanced) (EN 10162 compliant) | Eliminates mid-span joints for seamless installations; Base/Advanced share same max length | Custom lengths beyond 12m require special-order processing (4–6 weeks delay) |
Processing Services | On-site customization needs | Cutting, welding (Industry) ▲ + Punching, Bending (Base) ▲▲ + Galvanizing, Coating (Advanced) (ISO 9001 certified) | Base reduces reliance on third-party services; Advanced adds protective coatings | Advanced services may add 10–15% to project timelines |
Tolerance Precision | Precision engineering | ±2% (Industry) ▲ ±1% (Base) ▲▲ ±0.5% (Advanced) (ISO 19982 compliant) | Base improves alignment accuracy; Advanced ensures minimal fitting errors in tight spaces | Tighter tolerances increase production costs by 25–40% due to specialized tooling |