Steel Cross-Shaped Columns in Modern Construction

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A High-Performance Structural Solution

1. Structural Configuration

Cross-shaped columns (cruciform sections) are fabricated by welding four steel plates into a "+" configuration, combining the advantages of H-sections and box columns. Typical dimensions include:

• ‌Flange width‌: 200-800mm (standard series: C200×200 to C800×800)
• ‌Plate thickness‌: 12-40mm (Grade Q355B/Q460C)
• ‌Fillet welds‌: 8-20mm leg length (AWS D1.8 Class CP)

‌Key components‌:

• ‌Web plates‌: Main load-bearing elements (σ_max ≤ 0.8Fy)
• ‌Flange plates‌: Enhance buckling resistance (λ ≤ 0.45√(E/Fy))
• ‌Stiffeners‌: Horizontal diaphragms @ 1.5m intervals

2. Material & Fabrication

‌Base materials‌:

• Chinese standard: Q355B
• International equivalents: ASTM A572 Gr.50 (Fy=345MPa) / EN 10025 S355

‌Fabrication process‌:

1. CNC plasma cutting (tolerance ±1.5mm)
2. Submerged arc welding (SAW) with ER70S-6 wire
3. Post-weld heat treatment (PWHT @ 580-620°C)
4. Shot blasting to SA 2.5 cleanliness

OEM service available.

A dedicated team of fast response;

EN1090 & AISC & CWB & JIS Certificated Quality;

Full production line for customized products;

Close to Sea port, Convenient for visit and delivery;

150000M2 Manufacturing Area capable to take large volume

Sunway is a Chinese steel fabricator established in the year 2002, providing OEM steel structure for Construction Building, Solar Tracker, Chemical Plant, Power Plant, Mining & Cement equipment.

Sunway has passed international certificates including AISC, CE, CWB, JIS, ISO. Supply full package of steel works ready for erection on site. 70% of products exported to overseas, including Europe, North America and Australia, etc.

Sunway conducts digital management of the workshop. Through Tekla, Solidworks software and MES systems, the full traceability of product cycle is realized.

Besides the Automatic Intelligent Production Line for H beam & Box Column, the factory is well equipped with Laser Cutting Machine, Robot Welding Machine, Sawing Machine, Drilling Machine, Hydraulic Press Machine, Punching Machine, Shot-blasting machine and independent Painting workshop. 

The typical products are Built-up H section, Steel Frame, Steel Truss, Solar tracker bracket, and Pipe Racking Structures.

Why choose Sunway?

OEM & Detailing service available.

A dedicated team of fast response;

EN1090 & AISC & CWB & JIS Certificated Quality;

Full production line for customized products;

Close to Sea port, Convenient for visit and delivery;

100,000M2 Manufacturing Area capable to take large volume;

Built on strength, passion and a steady pulse, we’re creating tomorrow ’s Building today. We are Sunway Steel, and we’re fabricating the Future.