High strength
Good toughness
Easy to cut and fabricate
Large design space for shaping
Low cost
Complex surface treatment process
Aluminum
Smooth surface
Attractive pole elements
Lightweight
Relatively weak strength
Requires mold making
Limited post-shaping possibilities
Relatively high cost
Steel Aluminum Bonding
Partially use steel
Partially use aluminum
Combine the advantages of aluminum and steel
Excellent craftsmanship
Wide range of design options for manufacturing
