We supply high-strength structural steel plates and customized components for bridges, lifting equipment, energy facilities, transport infrastructure, heavy industrial structures and seismic-resistant buildings.

Materials can be selected according to the required yield strength, impact temperature, plate thickness, delivery condition and welding process. Custom processing services include CNC cutting, beveling, drilling, bending, rolling, welding, surface preparation and export packaging.

Performance Advantages

High Impact Toughness

Impact-tested grades are available for structural components operating in cold climates or under sudden dynamic loading.

Suitable for Seismic Design

Selected grades can provide the strength, toughness and deformation performance required for seismic-resistant structural systems. Final material selection should follow the project engineer’s design requirements.

Performance Under Repeated Loading

For bridges, cranes and industrial equipment frames, properly selected materials combined with controlled welding and smooth connection details help improve performance under cyclic loading.

Stable Mechanical Properties

Controlled production and heat-treatment processes help maintain consistent strength and toughness across different plate thicknesses.

Controlled Weldability

Material carbon equivalent, plate thickness, joint configuration and service conditions are reviewed when determining welding consumables, preheating and heat-input requirements.

Custom Component Supply

Steel can be delivered as raw plates, precision-cut parts, drilled connection plates, fabricated beams, box members or complete welded assemblies.

Typical Material Options

• Normalized high-strength structural steel

• Thermo-mechanically rolled structural steel

• Quenched and tempered high-strength steel

• Low-temperature impact-tested steel

• Through-thickness tested steel

• Weldable low-alloy structural steel

• Project-specified high-toughness steel

Available Grades

Typical available grades include:

• S355NL / S355ML

• S420NL / S420ML

• S460NL / S460ML

• S690QL

• Q355D / Q355E

• Q460D / Q460E

• Q550D / Q550E

• Q690D / Q690E

Equivalent or project-specified grades can be evaluated according to availability and technical requirements.

Technical Parameters

Custom Processing Services

Precision Plate Cutting

CNC flame, plasma and laser cutting are available for connection plates, stiffeners, flanges, webs and irregular structural parts.

Welding Edge Preparation

Straight, single-V, double-V, K and project-specific bevels can be processed according to the welding joint design.

CNC Drilling

Bolt holes and connection holes can be drilled according to approved shop drawings, with dimensional inspection before delivery.

Plate Bending and Rolling

Steel plates can be formed into curved structural members, cylindrical sections, transition pieces and custom profiles.

Built-Up Component Fabrication

We manufacture welded beams, box girders, columns, truss components, crane beams and other drawing-based assemblies.

Surface Preparation

Options include shot blasting, shop primer, zinc-rich primer and multi-layer industrial coating systems.

Quality Assurance

Each order can be controlled through a documented inspection process:

1. Review of material grade and project specifications

2. Verification of material certificates

3. Chemical composition and mechanical property review

4. Plate dimension and surface inspection

5. Cutting, drilling and bevel inspection

6. Welding procedure and welder qualification control

7. Weld appearance and dimensional inspection

8. Optional ultrasonic or magnetic particle testing

9. Surface preparation and coating inspection

10. Final identification, documentation and packaging inspection

Why Work With Us?

• One-stop material and fabrication supply

• Grade selection support based on project specifications

• Customized production according to drawings

• Controlled cutting, drilling, welding and coating

• Material certificates and traceable documentation

• Optional nondestructive and third-party inspection

• Export packaging and international shipping coordination

• Technical support for component fabrication and assembly

FAQ

1. What makes high-toughness steel different from standard structural steel?

In addition to strength, high-toughness steel is selected according to its impact performance, service temperature, delivery condition and welding requirements. It is suitable for more demanding operating environments.

2. Is every high-strength grade suitable for seismic structures?

No. Seismic suitability depends on strength, ductility, thickness, connection design and applicable project requirements. The project engineer should specify the required performance.

3. Can you provide steel tested at low temperatures?

Yes. Impact-tested grades are available for different temperatures, including −20°C and −40°C. Other testing temperatures can be evaluated according to the project specification.

4. What is Z-direction steel?

Z-direction steel has controlled through-thickness properties. It may be specified for thick welded joints where through-thickness stress and lamellar tearing must be considered.

5. Can you fabricate crane beams and bridge components?

Yes. We can manufacture welded girders, crane beams, stiffened plates, diaphragms and other components according to approved fabrication drawings.

6. Can ultrasonic testing be provided?

Yes. Ultrasonic testing can be arranged for raw plates or completed welds according to the required inspection level.