Customized Span High Corrosion Resistance ISO 9001 Certified Prefab Steel

Heavy steel structure refers to a high-strength load-bearing structural system manufactured from high-performance low-alloy structural steels such as Q355B, Q460C, ASTM A36, A572 Gr.60, EN S355 through digital detailed design, CNC cutting, automated assembly and welding, integral straightening, sandblasting, anti-corrosion and fireproof coating, non-destructive testing, and factory inspection.

Compared with traditional concrete structures, heavy steel structures feature lighter self-weight, higher load capacity, better seismic toughness, faster construction, larger space utilization, lower life-cycle cost, and 100% recyclability. It is the preferred structural form for modern industrial buildings, transportation infrastructure, energy projects, high-rise and super high-rise buildings under severe working conditions such as long span, high clearance, heavy load, strong vibration, and high-intensity seismic resistance.

Our heavy steel structures are produced in accordance with GB50017, GB50205, ASTM, EN, BS, JIS standards, with a designed service life of more than 50 years, providing safe, reliable, and long-lasting structural support for global key projects.

We provide full-series custom fabrication of heavy steel structures to cover all engineering scenarios:

• Heavy Columns: Box columns, cross columns, latticed columns, steel pipe columns
• Heavy Beams: H-section beams, variable-section crane beams, box beams, transfer beams
• Trusses & Space Frames: Pipe trusses, triangular trusses, portal frames, grid structures
• Crane Systems: 5t-50t+ crane beams, brake trusses, walkways, bumpers
• High-Rise Components: Steel frames, core tubes, outrigger trusses, belt trusses
• Bridge Steel Structures: Steel box girders, steel truss girders, bridge deck plates
• Special Heavy Components: Equipment bases, tower frames, power station structures, wind turbine bases

1. Superior Load-Bearing Capacity Adopting high-strength steel with yield strength up to 345 -690MPa, supporting heavy cranes (25t, 50t, 100t+), heavy-load floors, and long-span column-free spaces.
2. Excellent Seismic & Wind Resistance Outstanding plasticity and toughness, meeting seismic fortification intensity 8+, ensuring safety in high-seismic and coastal strong-wind areas.
3. Factory Prefabrication & Efficient Delivery Full-process factory prefabrication, shortening construction period by 30% -60% compared with concrete structures.
4. Maximized Space Utilization Small cross-section and high bearing capacity enable extra-long span and super-high clearance, improving usable area and logistics efficiency.
5. Long-Lasting Anti-Corrosion & Durability Standard surface treatment: sandblasting Sa2.5 + zinc-rich epoxy primer + epoxy intermediate coat + polyurethane topcoat.
6. Eco-Friendly & Low-Carbon Dry construction minimizes pollution. Steel is 100% recyclable, fully compliant with global green building policies.

• Heavy Industrial Buildings: Heavy machinery workshops, metallurgical plants, chemical factories, automobile plants, high-load warehouses
• Transportation Infrastructure: Highway & railway bridges, viaducts, stations, airport terminals
• High-Rise & Super High-Rise Buildings: Office buildings, hotels, apartments, steel frame structures
• Energy & Power Projects: Power plants, wind & solar bases, boiler structures, substation frameworks
• Large Public Buildings: Stadiums, exhibition centers, theaters, long-span landmark buildings
• Special Heavy-Duty Structures: Port platforms, crane bases, industrial towers, equipment supports

1. Detailed Design & BIM Modeling - Tekla Structures, 3D BIM
2. CNC Precision Cutting - Flame / plasma / laser cutting
3. Assembly & Welding - Automatic assembly, submerged arc welding
4. Straightening & Shaping - Mechanical + flame straightening
5. Surface Treatment - Sandblasting/shot blasting to Sa2.5
6. Anti-Corrosion & Fireproof Coating
7. Non-Destructive Testing - UT, MT, PT inspection
8. Marking, Packaging & Delivery

• Consultation & Scheme Design
• Detailed Design & Drawing
• Custom Fabrication
• Quality Inspection & Certification
• Logistics & On-Site Guidance
• Installation & Turnkey
• After-Sales & Maintenance

• Professional Team & Rich Project Experience
• Full Industrial Chain & In-House Production Capacity
• Strict Quality Control System (ISO9001)
• Cost-Effective & On-Time Delivery
• International Standard Compliance (GB, ASTM, EN, BS)
• Reliable After-Sales Support

Get your free proposal and precise quotation within 24 hours! Please provide:

• Project type: Workshop / Bridge / High-Rise / Long-Span / Energy / Other
• Key parameters: Span, height, crane tonnage, floor load, area
• Standard: GB / ASTM / EN / Export
• Delivery: Lead time, installation, transportation, destination