I. Core Advantages

Ultra-high load carrying and deformation resistance

Closed-end cross-section design: bending stiffness is increased by 50%-80% compared with H-beam steel, and torsional stiffness is increased by 3-5 times, which is suitable for large-span heavy load scenarios;

Material strength: adopting Q355GJC, Q420qE and other high-strength steels, the yield strength reaches 355-420MPa, and the bearing capacity is enhanced by 30%-50%.

Excellent seismic performance

Ductile node design: dog-bone weakening (RBS) or stiffening rib reinforcement, plastic corner ≥ 0.03rad (GB 50011 standard);

Combined structure: box section steel filled with C60 concrete, axial compressive load capacity ≥50,000kN, damping ratio ≥0.05.

Efficient construction and long life

Factory prefabrication rate ≥95%: modular lifting unit (max. single section weight 3,000 tons), 40% shorter construction period;

Anti-corrosion and fire protection double guarantee: hot dip galvanizing (zinc layer ≥85μm) + intumescent fireproof coating (fire resistance limit ≥3 hours), design life ≥100 years.

Green and low carbon

Recyclable rate ≥98%, carbon emission is reduced by 45% compared with concrete structure;

Green construction: laser cutting dust recycling rate ≥90%, 100% recycling of waste steel.

II. Core product series and technical parameters

III. Key Design and Manufacturing Technologies

Cross-section optimization

Layout of stiffening ribs: spacing of transverse stiffening ribs ≤600mm, height of longitudinal stiffening ribs ≥1/10 of the height of the web;

Spacer reinforcement: internal transverse spacer thickness ≥16mm, spacing ≤3m, to ensure the integrity of the closed section.

Precision manufacturing process

Laser-arc composite welding: 50mm thick plate is welded through in a single pass, efficiency is increased by 40%, and the hardness of heat-affected zone is ≤350HV;

Intelligent orthopedic: hydraulic straightening machine controls welding deformation, straightness error ≤2mm/10m.

Anti-corrosion and fire prevention technology

Nano-ceramic coating: Al₂O₃-TiO₂ composite coating, salt spray resistance ≥ 15,000 hours (ISO 9227);

Thick fireproof coating: thickness 25mm, 3 hours fire resistance limit (GB 14907).

IV. Intelligent Construction and Operation and Maintenance

BIM full life cycle management

Digital pre-assembly: solving node conflicts and generating processing codes (error ≤ 0.1mm);

Construction simulation: optimize the lifting sequence and reduce the risk of working at height.

Health Monitoring System

Sensor network:

Fiber grating sensor (stress/deformation monitoring, accuracy ±1με);

Inclinometer (accuracy ±0.001°).

AI early warning platform: real-time analysis of data, damage location accuracy ≥95%.

Green construction technology

Laser cutting dust removal: dust emission ≤5mg/m³ (national standard ≤10mg/m³);

Zero waste of waste materials: 100% recycling and melting of edge materials, material utilization rate ≥99%.

Contact

Mobile number: 13848510731

Landline number: 0471-6490861

Address: Inside the courtyard of the Outer Transport Company, diagonally opposite the government of Haoqinying Town, Xincheng District, Hohhot City, Inner Mongolia (National Highway 110)