From high-bay distribution hubs to fire-rated pharmaceutical cleanrooms, Joint Star Steel Structure Ltd. delivers turnkey structural integrity, optimized steel weight, and precision insulated envelope systems built to international export specifications.
Designed and erected clear-span rigid frame steel building featuring built-up tapered columns, heavy crane runway brackets, and high eave ventilation monitors.
Engineered multi-bay warehouse structure with wide column spacing, high-strength cold-formed Z-purlins, and deep drainage eave gutters.
On-site crane rigging and high-strength anchor-bolt installation of structural portal frames with precision torque verification and calibrated plumb alignment.
Weatherproof steel roof structure incorporating continuous polycarbonate skylight strips, negative pressure louvers, and anti-condensation underlay.
Unobstructed internal floor layout with 42-meter clear span rafters, accommodating multi-tier racking systems and automated forklift transit corridors.
High-precision secondary member erection including galvanized cold-formed C/Z purlins, portal tie rods, and cable bracing assemblies.
Turnkey exterior envelope installation combining thermal-insulated EPS wall sandwich panels, perimeter flashing trims, and custom canopies.
Multi-level heavy-duty steel mezzanine system designed for production management offices and elevated raw-material buffer storage.
Full-height modular sandwich panel installation ensuring airtight tongue-and-groove alignment, structural wind resistance, and dust-proof sealing.
Heavy industrial building featuring reinforced stepped crane columns, continuous crane runaway beams, and rail electrification brackets.
Specially engineered portal frame structure designed for coastal wind loads, high corrosive marine environments, and seismic stability.
Field-seamed continuous metal roofing system with thermal expansion clips, eliminating screw penetrations and guaranteeing zero water ingress.
End-to-end completion encompassing structural framing, sandwich walls, industrial rolling shutter doors, perimeter drainage, and final inspection sign-off.
High-safety industrial warehouse envelope engineered with non-combustible rock wool core sandwich panels achieving certified 2-hour fire resistance.
Comprehensive thermal upgrade for operational manufacturing shed, installing over-roof sandwich panel insulation to slash HVAC electricity expenses.
Flagship steel construction delivery featuring 4 interconnected factory sheds, centralized storage, raw materials unloading dock, and executive offices.
Joint Star Steel Structure Ltd. follows rigorous quality assurance standards from raw steel sourcing to pre-shipment dimensional inspection.
Structural designs conform strictly to American Institute of Steel Construction standards and Metal Building Manufacturers Association guidelines for load combinations and allowable stresses.
We source prime mill-certified structural steel plates (ASTM A572 Grade 50, Q345B, Q235B) accompanied by chemical analysis and physical tensile test inspection reports.
Submerged arc and flux-cored welders certified to AWS D1.1 specifications. 100% visual inspection and ultrasonic non-destructive testing (NDT) applied to primary moment connection welds.
Structural elements undergo automatic centrifugal shot blasting to ISO 8501-1 Sa 2.5 surface cleanliness, followed by calibrated airless spray epoxy primer (min 100–120 µm DFT).
| Component System | Standard Specification | Material Grade & Treatment | Quality Test Method |
|---|---|---|---|
| Primary Rigid Frames | Built-up tapered & uniform H-sections, end-plate connections | ASTM A572 Gr 50 / Q345B (Yield ≥ 345 MPa) | Ultrasonic Flaw Detection (UT), Magnetic Particle (MT) |
| Secondary Cold-Formed | Z & C purlins with continuous overlap continuity | High-Tensile Galvanized Steel (Z275, Yield ≥ 345 MPa) | Zinc Coating Thickness Gauge, Tensile Pull Testing |
| Insulated Envelope Panels | EPS, Polyurethane (PU/PIR), Fireproof Mineral Rock Wool | 0.40–0.60mm Pre-painted Galvalume Skins (AZ150) | Thermal Conductivity (ASTM C518), Fire Test (ASTM E84) |
| Connection Hardware | Heavy hex structural bolts, anchor bolt assemblies | ASTM A325 / Grade 8.8 High-Strength Bolting | Calibrated Torque-Wrench Verification, Proof Load Testing |
A structured four-stage EPC methodology guarantees precision engineering, fast production lead times, and seamless on-site erection.
Every member, connection plate, and bolt hole is modeled in Tekla Structures to eliminate clash risks and generate automated CNC fabrication shop drawings.
CNC multi-head flame and plasma cutting, continuous submerged arc welding, straightening, and computerized hole drilling ensure millimeter tolerances.
Members are tagged with project-specific member marks, protective bundled, and matched to container loading packing lists for rapid on-site unpacking.
Qualified site engineers and rigging crews erect portal frames, bolt connections to verified torque, and install insulated panel skins to complete inspection sign-off.
Clear engineering and commercial answers to help overseas procurement managers and project developers make informed investment decisions.
Every steel building designed and manufactured by Joint Star Steel Structure Ltd. complies with international design benchmarks including AISC 360 (American Institute of Steel Construction), MBMA (Metal Building Manufacturers Association), AWS D1.1 (Structural Welding Code - Steel), and local building codes such as BNBC 2020. Our engineering calculations account for site-specific dead loads, live loads, seismic factors, and regional wind velocity parameters up to 210 km/h.
All steel components undergo computer-aided detailing via Tekla 3D modeling, followed by precision CNC plasma cutting, automatic submerged arc welding (SAW), and shot-blasting surface treatment to ISO Sa 2.5 standards. Each member receives a multi-coat anti-corrosion primer with verified dry film thickness (DFT). Pre-shipment quality control includes non-destructive ultrasonic weld testing (NDT), dimensional tolerance checks, and individualized barcoded tag marking matched with detailed packaging lists.
Standard project execution schedules range from 4 to 8 weeks for shop fabrication depending on total tonnage (e.g., 200 MT to 1,500 MT). On-site erection typically progresses at 1,000 to 2,500 m² per week utilizing modular pre-punched bolting connections, which significantly reduces erection duration compared to traditional concrete construction.
Yes. We offer fully integrated EPC turnkey solutions encompassing geotechnical anchor-bolt foundation engineering, primary steel fabrication, crane beam installation, mezzanine floor decking, and energy-efficient building envelope enclosures with EPS, PU/PIR, or fireproof rock wool sandwich panels.