ZhongSai Steel Structure supplies fabricated structural steel components for overseas construction and industrial projects, manufactured according to your project drawings, BOQ and technical requirements. We supply fabricated beams, steel columns, welded H sections, box columns, steel trusses, bracing systems, steel platforms, connection plates, brackets and custom fabricated components — with cutting, drilling, welding, surface treatment, inspection, marking and export packing. 15+ years export experience, 100,000 m² production base, ISO 9001 certified.
Manufactured to your drawings — not raw steel trading.
H beams, plate girders, crane runway beams, rafters, lintels. Cut to length, drilled, welded with stiffeners and connection plates, surface treated.
Wide-flange columns, built-up columns, box columns, stepped columns, crane columns. Base plates, brackets, gusset plates welded per drawings.
Custom welded H-beam sections from flange and web plates. Non-standard sizes, heavy sections, built-up members for specific load requirements.
Welded box columns and rectangular hollow sections. Four-plate assembly, internal diaphragm welding, for high-load and multi-story applications.
Roof trusses, crane trusses, bracing trusses, pedestrian bridge trusses. Chord and web member fabrication, gusset plate welding, assembly.
Cross bracing, diagonal bracing, flange bracing, portal bracing. Round bar, angle, H-section bracing members with end connections.
Process platforms, equipment support platforms, mezzanine floors, access platforms, stairways. Main beams, secondary beams, decking, handrails.
Gusset plates, stiffener plates, end plates, base plates, bearing plates, cleats, brackets. Precision drilled and cut per connection details.
Custom heavy steel components, complex built-up members, specialized connections, non-standard structural elements. Manufactured to your specific drawings and requirements.
ZhongSai's core value is fabrication — not simply selling steel material.
| Aspect | Raw Structural Steel (Material Trading) | Fabricated Structural Steel (ZhongSai) |
|---|---|---|
| What you receive | Standard steel sections in stock lengths. No cutting, no holes, no welding. | Components manufactured to your project drawings — cut, drilled, welded, assembled, surface treated. |
| Input required | Section size, grade, quantity, length. | Project drawings, BOQ, technical specifications, design standard. |
| Value added | Material supply only. You handle all fabrication locally. | Engineering review → detailing → cutting → drilling → assembly → welding → surface treatment → QC → marking → packing. |
| On-site work | Requires local fabrication shop: cutting, drilling, welding, surface treatment. | Components arrive ready for erection. Bolted connections — minimal on-site welding required. |
| Quality control | Material certificate only. No fabrication QC. | Material verification + dimensional inspection + welding inspection + surface treatment inspection + final inspection. |
| Component marking | No member marking. You identify and mark on site. | Every component marked with unique member number matching erection drawings. |
| Best for | Buyers with their own fabrication shop needing raw material only. | Contractors, owners and importers who need ready-to-erect fabricated components for overseas projects. |
How your project drawings become fabricated, inspected and export-ready components.
You provide project drawings and BOQ
Fabricability review and clarification
Shop drawings if required
Steel procurement and verification
Cutting, drilling, assembly, welding
Dimensional, welding, coating inspection
Member numbering per erection drawings
Assembly-group packing with lists
Container loading and documentation
Remote technical guidance on request
Fabricated structural steel components for a wide range of project types.
Components are the core. Materials and supporting systems complete the package.
Hot-rolled and welded H sections, I beams, wide-flange columns. Standard and custom sizes.
View H Beams →Cold-formed C and Z purlins for roof and wall secondary framing. Galvanized or painted.
View Purlins →EPS, rock wool and PU insulated sandwich panels for roof and wall cladding.
View Panels →High-strength structural bolts, anchor bolts, self-drilling screws, sealing washers.
View Fasteners →Paint systems (epoxy zinc-rich + polyurethane), hot-dip galvanizing, weathering steel.
View Coatings →Industrial roller shutters, sliding doors, personnel doors, windows, translucent panels.
View Doors & Windows →Note: Materials & Components are a supporting cluster. Fabricated Structural Steel Components (this page) is the core commercial product — manufactured to your drawings with full fabrication, QC and export preparation.
Every component passes through our multi-stage quality control process.
Steel material certificates checked against order requirements. Visual inspection of material surface. Material traceability maintained throughout production.
Cutting accuracy, hole position and diameter, assembly dimensions, overall length and squareness checked at each production stage. Final dimensional verification before surface treatment.
Welder qualification verification. Welding procedure specification (WPS) compliance. Visual inspection of all welds. Non-destructive testing (UT/MT/PT) where specified by project requirements.
Blast cleaning grade verification (Sa 2.5 for paint systems). Dry film thickness (DFT) measurement of primer and topcoat. Adhesion testing where required. Galvanizing thickness and appearance check.
Complete component inspection against drawings: dimensions, hole patterns, welds, markings, surface treatment. Component marking verified against erection drawing numbering. Packing list cross-checked with actual contents.
Material certificates (Mill Test Reports), welding procedure records, inspection reports, coating thickness records, packing lists. Documentation package provided with each shipment as required.
Providing the following information helps us deliver an accurate and timely quotation.
Country and destination
DWG/DXF/PDF/IFC
Bill of quantities
Beams, columns, trusses
Total weight or piece count
Q355B, A36, S355
GB, ASTM/AISC, EN, AS
Paint or galvanizing
Required schedule
NDT, marking, packing
Common questions about fabricated structural steel components.
Yes. Our core service is fabricating structural steel components from your project drawings, BOQ and technical specifications. We accept DWG, DXF, PDF and IFC formats. Our engineering team reviews your drawings for fabrication feasibility, then produces shop drawings and manufactures the components to your specified standards (GB, ASTM/AISC, EN/Eurocode, AS). We are not a raw steel trader — every component goes through cutting, drilling, assembly, welding, surface treatment, inspection and marking before packing.
Yes. We supply fabricated steel beams (H beams, plate girders, crane runway beams, rafters), steel columns (wide-flange columns, built-up columns, box columns, stepped columns), welded H sections, and custom fabricated structural components. Each component is manufactured to your drawings with the correct dimensions, hole patterns, connection details, welds and surface treatment. We do not sell raw steel sections without fabrication — our value is in the manufacturing, QC and export preparation.
Yes. If you have engineering design drawings but need fabrication-level detailing, we can provide structural steel detailing services including 3D modeling, member detailing, connection details, material lists (BOM), shop drawings and erection drawings. Detailing is connected directly to our fabrication — the drawings we produce are the drawings we manufacture from. This eliminates the gap between detailing office and fabrication shop. If you already have complete shop drawings, we can fabricate directly from them.
For an accurate structural steel component quotation, we need: project country and destination, structural drawings (DWG/DXF/PDF/IFC), BOQ if available, component types (beams, columns, trusses, etc.), total quantity or tonnage, steel grade requirements (Q355B, A36, A572, S355, etc.), applicable design standard (GB, ASTM/AISC, EN, AS), surface treatment requirements (paint system, hot-dip galvanizing), and required delivery schedule. The more complete your drawings and BOQ, the more accurate our quotation will be.
Yes. Every fabricated component is marked with a unique member number corresponding to your erection drawings. We use piece marks, assembly numbers and orientation indicators so your on-site installation team can identify each component and place it in the correct location. Marking is done with durable paint or stamping, and is verified during final inspection before packing. Each container's packing list cross-references member numbers to erection drawings, making on-site assembly efficient.
Structural steel components are packed by assembly group for efficient international shipping. Primary beams and columns are bundled with protective wrapping and member marking. Trusses and bracing are bundled by type. Small items (connection plates, brackets, bolts, fasteners) are boxed with detailed packing lists. Machined surfaces and bolt holes are protected. We optimize container loading to maximize weight and volume utilization. Long members may require open-top or flat-rack containers. Each container has a detailed packing list cross-referenced to erection drawings.
Yes. We provide complete erection drawings including: general arrangement drawings, assembly sequence drawings, connection details, bolt schedules, member location plans, and foundation anchor bolt layouts. These drawings guide your local installation team through the entire erection process. We also provide installation manuals and remote technical support via video call and email. For complex or large projects, we can dispatch engineers to your site for installation supervision and training. Note: we do not perform on-site construction ourselves — we provide technical guidance for your local installation team.
ZhongSai Steel Structure is a China-based steel structure manufacturer and export supplier. We supply fabricated structural steel components manufactured to your drawings, with fabrication, QC, marking, packing and export support.
We are NOT a raw steel trading company, a freight forwarder, a customs broker, or a local construction contractor in your country. We do not sell raw steel sections without fabrication value-add. We do not perform on-site construction — we provide technical guidance for your local installation team.
Send your structural drawings, BOQ or technical specifications. Our engineering team will review and provide a detailed component quotation.
Send Drawings / BOQ →Send your project requirements for engineering review. We can help with detailing before fabrication if you have design-level drawings.
Request Component Quote →Prefer to talk directly? Contact our sales team:
