En 1090-Certified Galvanized Steel Truss for Large-Span Workshops and Commercial Complexes

Product Description

Our EN 1090-Certified Galvanized Steel Truss is purpose-built for large-span workshops and commercial complexes. Manufactured from high-strength S355JR steel and hot-dip galvanized after fabrication, it delivers exceptional load-bearing capacity, corrosion resistance, and full regulatory compliance for the European market. Every truss is designed to Eurocode 3, shop-fabricated under ISO 3834 welding control, and supplied with complete CE documentation – so you can erect with confidence.

Why EN 1090 Certification Matters

Since 1 July 2014, EN 1090-1 has been the harmonised standard for CE marking of structural steel components in the EU. Our certification means we operate a certified Factory Production Control (FPC) system that guarantees:

• Consistent product quality through systematic in-process inspections
• Full material traceability – every element is linked to its mill certificate
• Qualified welders with approved WPS and PQR, audited to ISO 3834-2
• Regular independent surveillance by a Notified Body
When you buy from us, you receive trusses that are "project-ready" – no additional certification work required on your side.

Hot-Dip Galvanizing – Long-Term Corrosion Protection
We apply hot-dip galvanizing strictly to EN ISO 1461, the European reference for zinc coatings on fabricated steel.

Process steps:

• Degreasing & pickling – remove oils and mill scale
• Fluxing – prevent oxidation before dipping
• Zinc bath immersion at ~450°C for complete coverage
• Cooling and inspection – thickness measured with magnetic gauge
Protection mechanism:

• Barrier effect – zinc layer shields steel from moisture and oxygen
• Sacrificial (cathodic) protection – even if scratched, the zinc corrodes preferentially, protecting the exposed steel
This dual action gives a service life of 30-50 years in typical industrial or urban atmospheres (C2-C4 corrosivity categories), with virtually no maintenance.

Structural Design – Optimised for Large Spans
The triangular lattice configuration of our truss is inherently stable and transfers loads through axial forces – ideal for achieving wide, column-free interior spaces in workshops and commercial buildings.

We offer multiple truss configurations:

• Warren – zigzag diagonals, excellent for uniform loading
• Pratt – diagonals slope toward mid-span, efficient for heavy point loads
• Howe – diagonals slope away, good for shorter spans and timber connections
• Custom polygon – for architectural curves or specific roof slopes
Our in-house engineers use Tekla Structures and STAAD Pro to model every truss, considering roof slope, crane loads, snow/wind/seismic data (Eurocode 8 available), and connection economy. We deliver detailed erection drawings with unique member tags – so your site team can assemble quickly and safely.

Fabrication Excellence – ISO 3834 Welding Quality

All fabrication is carried out in our ISO 3834-2 certified workshop, following the technical requirements of EN 1090-2:

• CNC cutting & drilling – precision bevels and holes
• Sub-assembly & tack welding – jig-set for accuracy
• Full welding – by qualified welders using approved WPS (SMAW/GMAW/SAW)
• Non-destructive testing – ultrasonic (UT) for butt welds, magnetic particle (MT) for surface defects, as per EXC level
• Dimensional check – all members verified against shop drawings
• Hot-dip galvanizing – entire truss immersed after fabrication
• Final inspection – coating thickness, flatness, and hole alignment
This systematic process guarantees that every truss leaves our factory "fit-for-purpose" – straight, accurately drilled, and ready to bolt up on site.

Quality Assurance – Beyond the Standard
We operate a multi-layer quality system that goes beyond routine inspection:

• Mill Test Certificates (MTC) – full chemical and mechanical properties for each heat
• Welding Procedure Specifications (WPS) – pre-qualified for all common joints
• NDT personnel – certified to EN ISO 9712
• Coating thickness tests – performed at multiple points per EN ISO 1461
• Pre-shipment documentation package – including DoP, CE label, test reports, and as-built drawings
We also welcome third-party inspection (e.g., SGS, BV, TÜV) at your request – we are experienced in accommodating external auditors.

Specification

Item	Detailed Description
Design & Execution Standards	Design: Eurocode 3 (EN 1993-1-1) – steel structures. Execution: EN 1090-2 – technical requirements. Welding: ISO 3834-2 – quality requirements for fusion welding. Galvanizing: EN ISO 1461 – hot-dip zinc coatings. Execution Class: EXC2 (standard) or EXC3 (upon request) – controls NDT scope, welding supervision, and documentation.
Material Properties	Steel grade: S355JR (EN 10025-2) – yield ≥355 MPa (t≤16mm) / ≥345 MPa (16-40mm); tensile 470-630 MPa; impact 27J @ +20°C. Alternative: S275JR for lighter applications. Carbon equivalent (CEV) ≤0.45% ensures good weldability. Full MTCs with heat numbers provided.
Galvanized Coating	Coating thickness (average): ≥85μm (uncentrifuged members). Local minimum: ≥70μm. Surface condition: free from zinc runs, spikes, or bare spots. Adhesion: tested by Preece test (copper sulphate) to ensure full coverage. Corrosion performance: ≥30 years in C2-C4 environments per ISO 12944.
Fabrication Tolerances	Per EN 1090-2: Length tolerance ±2 mm per member. Straightness ≤ L/1000. Angular deviation ±1° for chord members. Hole centre distance ±1.5 mm. Surface flatness – no distortion exceeding 3 mm per metre. All dimensions verified during dry-assembly prior to galvanizing.
Welding & NDT	Welding processes: SMAW, GMAW, SAW with approved WPS. Welder qualification: EN ISO 9606-1. NDT: UT (ultrasonic) for full-penetration butt welds; MT (magnetic particle) for fillet welds and surface cracks. Scope: per EXC2 (sampling) or EXC3 (higher frequency). Reports issued with each batch.
Design Life & Performance	Designed for a 50-year service life under normal atmospheric conditions (corrosivity C3-C4). Seismic performance – can be tailored to Eurocode 8 (EC8) for earthquake-prone regions. Fire protection – we can apply intumescent coatings or recommend passive fire protection measures on request.

All parameters are fully customisable – we tailor every truss to your project drawings and local code requirements.

Packaging & Shipping

Crating: Heavy-duty steel-framed wooden crates with soft padding on all contact surfaces. Each bundle is shrink-wrapped with VCI paper to prevent moisture ingress during sea transit.
Marking: Every member is stencilled with a unique ID that matches the erection drawing – no need to guess which piece goes where.
Containerisation: Long members are shipped in flat-rack or open-top containers; for extra-long spans we arrange break-bulk shipping with proper lifting lugs.
Documentation: Packing list, lifting plan, and assembly sequence are included inside each crate.

After-Sales Service
Erection supervision – we can dispatch an experienced supervisor to guide your crew on site (available at cost).
Warranty: 12 months against fabrication defects and material non-conformance (zinc coating included).
Spare parts: Quick replacement of any damaged or lost bolting components.
Technical helpline – our engineers respond to queries within 24 hours via email, phone, or video call.
Full documentation – all certificates, DoP, CE labels, and as-built drawings provided in digital format for your project file.

Company Profile

Hangzhou FAMOUS Steel Engineering Co., Ltd. (FASECbuilding) is an EN 1090-certified steel structure manufacturer specialising in prefabricated trusses for international projects.

• Certifications: EN 1090-1 (CE), ISO 3834-2, ISO 9001 – full EU market access.
• Facility: 50,000m² workshop with CNC cutting, robotic welding, and in-house galvanizing line (or partnered galvanizing plant with capacity up to 12m length).
• Engineering team: 30+ structural engineers proficient in Tekla, STAAD Pro, and Eurocode design.
• Global reach: Supplied trusses to workshops, warehouses, commercial centres, and stadiums in Europe, Southeast Asia, and the Middle East.
• Capacity: 50,000 tons per year – reliable for both small and large contracts.
We deliver not just a truss, but a complete compliance package – so your project moves forward without delays. Let's build something great together!