The SynJect Standard for Global Infrastructure
Five foundational pillars designed to eliminate execution risks and safeguard your project timeline
01
CAPACITY
Built to Scale
Massive heavy industrial scale. We guarantee uninterrupted supply and rapid production fulfillment to support the most demanding national level projects across continents.
02
COMPLIANCE
Built to Assure
Engineered to European standards. Backed by fully traceable CE and ISO certifications, ensuring your structures pass stringent local technical audits with zero friction.
03
PRECISION
Built to Simplify
Exact coordinate execution. Driven by industrial-grade data, every node is pre-cut and pre-assembled to eliminate on-site guesswork and compensate for local labor gaps.
04
EFFICIENCY
Built to Optimize
Optimized cross-border logistics. We meticulously calculate the exact dimensions of every component to maximize shipping container utilization, drastically cutting your freight costs.
05
RESILIENCE
Built to Endure
Built for extremes. Our steel structures are purpose-engineered to withstand severe regional climates—from extreme heat to heavy snow loads—guaranteeing lifetime stability.
Prefabricated Steel Warehouse
100m+ Clear Span | 30% CAPEX Reduction | Standardized Shipping
READY TO BUILT.
ZERO REWORK
01 / 06
Portal Frame Structure
SynJect PEB deliver rapid deployment and maximum ROI through BIM-optimized detailing. Millimeter-accurate, factory-fabricated components guarantee seamless on-site assembly, eliminating rework and accelerating your industrial project timeline with dependable consistency.
Qualification Certificate
Your projects are protected by world-class standards. From CE (EN 1090) to ISO 9001, our qualifications are not just paper—they are the rigorous daily reality on our shop floor.
ISO 9001 Quality Management System
SynJect
SynJect：Scale. Precision. Certainty.
SYNJECT delivers comprehensive steel structure solutions engineered for the global value chain. From investors seeking ROI to engineers demanding exact compliance, we transform complex blueprints into robust realities—on time and without friction.
From Blueprint to Site. Zero Friction.
Stage.01
Detailed Engineering
Utilizing advanced BIM platforms such as Tekla Structures, detailed 3D modeling and shop drawings are executed strictly in compliance with AISC 360 or Eurocode 3 (EN 1993). Connection designs are rigorously verified, with manufacturing drawings generated to ISO 2768-m tolerance standards. 100% clash detection with primary architectural and MEP systems is performed to ensure zero structural conflicts during field erection.
STANDARDAISC 360 / EN 1993
METRIC VALUETolerance ±0.01mm
Stage.02
Nesting & Material Optimization
Intelligent nesting layouts are performed using advanced software like FastCAM/SigmaNEST in accordance with EN 10029 / ASTM A6 dimensional standards. Accounting for cutting kerf (2mm–5mm depending on plate thickness) and thermal contraction allowances, raw material utilization exceeds 92%. Offcuts are digitally barcode-tracked to ensure 100% mill test report (MTR) traceability.
STANDARDEN 10029 / ASTM A6
METRIC VALUEUtilization 95%
Stage.03
Raw Material Incoming Inspection
All structural steel (Q355B/C/D, ASTM A572 Gr.50, S355JR/J2) must be accompanied by EN 10204 3.1 Mill Test Reports (MTR). Incoming quality control conducts 100% dimensional and visual inspections under ASTM A6 / EN 10029, verifying thickness tolerances (Class A/B) and internal lamination integrity via Ultrasonic Testing (UT) to ASTM A435. Chemical composition and mechanical properties are spot-verified by accredited 3rd-party labs.
STANDARDEN 10204 3.1 / ASTM A435
METRIC VALUEClass A/B and ASTM A435
Stage.04
CNC Cutting & Edge Preparation
Plate profiling and component cutting are executed via CNC oxy-fuel, high-definition plasma, and multi-kW fiber laser equipment. Cut surface quality strictly complies with EN ISO 9013 for perpendicularity and surface roughness ±2.5°, Range 3/4 tolerance). Multi-axis CNC beveling machines execute weld prep bevel angles within ±2.5° and root face dimensions within ±1.0 mm.
STANDARDEN ISO 9013
METRIC VALUERa ≤12.5μm
Stage.05
Primary Structural Welding
Welding is performed exclusively by AWS D1.1 or EN ISO 9606 certified welders using qualified Welding Procedure Specifications (WPS) supported by Procedure Qualification Records (PQR) per AWS D1.1 / ISO 15614. Submerged Arc Welding (SAW) and Flux-Cored Arc Welding (FCAW) dominate Complete Joint Penetration (CJP) and fillet welds. Heat input is strictly controlled, achieving weld quality levels conforming to ISO 5817 Quality Level B or AWS D1.1 standards.
STANDARDAWS D1.1 / EN ISO 9606
METRIC VALUEISO 5817Level B
Stage.06
Weld Distortion Straightening
Post-weld angular distortion, camber, and sweep are rectified using automated hydraulic flange straighteners and controlled thermal flame straightening. Heating temperatures for High-Strength Low-Alloy (HSLA) steels are strictly maintained between 600℃ - 650℃ (air-cooled, zero water quenching) to prevent microstructural degradation. Post-straightening straightness tolerances meet ±3 mm, conforming to EN 1090-2 Execution Class 2 (EXC2/EXC3) and AISC COSP standards.
STANDARDEN 1090-2 EXC2 / AISC COSP
METRIC VALUETolerances ±3 mm
Stage.07
Non-Destructive Testing (NDT)
NDT protocols are operated by ISO 9712 / ASNT Level II certified NDT personnel. 100% of critical Complete Joint Penetration (CJP) welds undergo Ultrasonic Testing (UT per ISO 17640 / ASTM E164) or Magnetic Particle Testing (MT per ISO 17638 / ASTM E709). Radiographic Testing (RT) is applied as requested for heavy sections. Weld acceptance conforms strictly to ISO 11666 Acceptance Level 1 or AWS D1.1 criteria.
STANDARDISO 11666 Level 1 / AWS D1.1
METRIC VALUE100% UT
Stage.08
Trial Assembly & Shop Alignment
Complex geometries, long-span trusses, and heavy framing undergo 1:1 physical trial assembly or high-precision 3D laser scanning virtual assembly per EN 1090-2 / AISC requirements. Bolt hole alignment is verified (≥ 95% free-pass rate for high-strength bolts), and critical dimensions (span, camber, 3D spatial alignment) are verified within tight tolerance limits (±2.0 mm) to eliminate site fitting risks.
STANDARDAISC / EN 1090-2
METRIC VALUETolerance ±2.0 mm
Stage.09
Surface Preparation & Protective Coating
Structural members undergo automated shot blasting to achieve SSPC-SP10 / NACE No. 2 / ISO 8501-1 Sa 2.5 cleanliness, with a surface profile (anchor depth) of 45–75μm. High-performance protective coatings are applied using airless spray technology in compliance with ISO 12944 (C3 to CX corrosive environments), featuring Inorganic/Organic Zinc-Rich Epoxy Primers, Epoxy Micaceous Iron Oxide Intermediate coats, and Polyurethane/Fluorocarbon Topcoats. Dry Film Thickness (DFT) is verified using calibrated magnetic gauges adhering strictly to the 90/10 rule.
STANDARDISO 8501-1 Sa 2.5 / ISO 12944
METRIC VALUE45 - 75μm
Stage.10
Final Quality Inspection & Certification
Final Quality Control (FQC) performs a comprehensive holistic audit, inspecting paint aesthetics (zero runs, pinholes, sagging), critical geometry, bolt hole pitches, and laser/stenciled component mark traceability. A complete Manufacturing Data Report (MDR)—comprising MTRs, NDT records, coating inspection logs, and Certificates of Conformance—is compiled to support CE Marking (DoP under EN 1090) and AISC final acceptance.
STANDARDEN 1090 / AISC
METRIC VALUEQA/QC Final Release
Stage.11
Export Packaging & Logistics Protection
Protective packaging is engineered for containerized (40HQ/OT/FR) and breakbulk ocean freight under heavy maritime transit conditions. Structural members are bundled on heavy-duty steel skids with high-tensile steel strapping. Machined connections and contact surfaces are wrapped with VCI anti-corrosion film, EPE foam padding, and heavy rubber cushions. All timber packing complies fully with ISPM 15 phytosanitary standards and IMO Cargo Stowage and Securing (CSS) rules.
STANDARDISPM 15 / IMO CSS
METRIC VALUE40HQ/OT/FR
Stage.12
Global Field Erection & Site Management
We deliver international site erection supervision and turnkey EPCM construction services adhering to OSHA 1926 safety protocols, AISC COSP, and EN 1090-2 erection standards. Field teams, led by multilingual HSE and QA/QC engineers, utilize high-precision total stations to maintain structural plumbness within H/1000$ (≤25mm max). High-Strength Structural Bolting is executed via calibrated Wrench or Turn-of-Nut methods with 100% torque audit documentation.
STANDARDOSHA 1926 / EN 1090-2
METRIC VALUE≤ H/1000
GLOBAL DELIVERY
Proven Track Record
Discover how SynJect engineer certainty and eliminate on-site risks across the world's most demanding infrastructure projects.
CLIENT VOICES
Field-Verified by Global EPC Contractors
Real project feedback on our fit-up accuracy and on-time delivery
Nguyen H.
Supply Chain Director, SE Asia
“Deploying an automated warehouse in Vietnam is extremely risky. If the steel frame shifts slightly under wind load, our robotic cranes will crash, costing millions. SynJect (Shijie Heavy Industry) delivered absolute perfection. Their CNC manufacturing provided the exact millimeter precision our ASRS vendor demanded. The structural rigidity is phenomenal; during the last typhoon, the building didn’t sway a fraction, and our robots picked orders flawlessly. Their tropical coating system easily handles the humidity. Handing over the keys 45 days early allowed us to capture massive market share during the holiday surge. They are true masters of precision engineering!”
Narongchai P. / Somchai W.
VP of Plant Construction & Engineering, Global EV Manufacturing Campus (Thailand)
“Missing our EV SOP launch window meant millions in losses. Shijie eliminated all risk: the 42m conveyor skybridge bolted into place with zero deflection, overhead solar roofs drained bone-dry during monsoon storms, and 18,500 tons of steel went up with zero torch cuts. Delivering 24 days early secured our global vehicle launch.”
Tariq Al-Farsi
Senior Project Director, Gulf Mega-Structures EPC
“Executing a 12,000-ton large-span stadium roof comes with massive risks, especially regarding site fit-up and strict consultant audits. SynJect completely eliminated our concerns. Their 1:1 Tekla detailing and in-house trial assembly resulted in a flawless, zero-clash erection on site, saving us weeks of schedule. Furthermore, their 3D container nesting algorithm saved us multiple 40HQ containers in ocean freight. Every critical weld was backed by full MTCs and UT reports. SynJect is no longer just a supplier; they are our most reliable heavy engineering partner.”
Nguyen H.
EPC Project Director, Coastal Power Plant
“Facing brutal typhoon seasons and a non-negotiable grid connection deadline, Shijie’s 151m space frames delivered absolute structural integrity and unmatched erection speed.”
Yossi M.
Structural Engineering Manager, Desalination Plant Project
“Our desalination plant’s heavy frameworks demanded strict NDT compliance. Shijie delivered flawlessly. Their 100% UT testing on full-penetration welds and BIM accuracy ensured the box columns aligned perfectly on-site.”
INSIGHTS
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Oct 20, 2026
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Technical Insights
Oct 20, 2026
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Technical Insights
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