Q355D Cold Bending/Bending Performance?
A: Elongation ≥21%, cold bending qualified, not prone to cracking.
Cutting Method?
A: Flame cutting, plasma cutting, and sawing are all acceptable; for thick plates, pay attention to the heat-affected zone during cutting.
Bolt Connection Compatibility?
A: Compatible with 8.8/10.9 grade high-strength bolts, both friction and bearing types are acceptable.
Q355D Anti-corrosion Treatment?
A: Rust removal: Sa2.5 grade (sandblasting)
Primer + Intermediate Coat + Topcoat (ISO12944)
Outdoor heavy-duty anti-corrosion, galvanizing/metal spraying
Coating Dry Film Thickness Requirements?
A: ≥120μm (C3), ≥160μm (C4), 85% of testing points meet the standard.