Space Frames & Long-span Trusses (Made to drawing) is a EN 1090-2 EXC3/ISO 3834-2/ISO 9001-certified space frames & long-span trusses manufactured by Huaining Steel Structure. Key specs: Execution Class EN 1090-2:2018 EXC3, Welding System ISO 3834-2:2021, Welding Processes 135 (MAG), 136 (FCAW), 121 (SAW).
Made to drawing
Space Frames & Long-span Trusses
Space frames and long-span trusses for stadiums, sports halls, venues and wide-span industrial buildings. Long-span work is where fabrication tolerance shows up on site: if the truss is wrong, nothing lifts into place.
Specifications
| Execution Class | EN 1090-2:2018 EXC3 |
| Welding System | ISO 3834-2:2021 |
| Welding Processes | 135 (MAG), 136 (FCAW), 121 (SAW) |
| Material Groups | 1.1, 1.2 (ISO/TR 15608) |
| Qualified Plate Thickness | Up to 30 mm (per WPQR) |
| Design Scope | Not included — we fabricate to your drawings |
Features
- Space frames and tubular truss structures
- Long-span roof trusses shipped as complete assemblies where transport allows
- Tube-and-section combined production line for truss members
- End-milling and section straightening for assembly-critical tolerances
Applications
- Stadiums, gymnasiums and sports halls
- Exhibition and venue roofs
- Wide-span industrial buildings
- Canopy and daylighting roof structures
Where It Fits Best
01
Venue roofs where the truss must lift first time
Long-span trusses are assembled on the ground and lifted whole. Fabrication tolerance is the whole game.
02
Architecturally complex steel
Curved, twisted and sculptural steelwork sits on the same lines as our standard trusses.
Ordering & supply
The facts you need before you send an inquiry — confirmed against your order, never invented.
Frequently Asked Questions
Do you work to our drawings, or do you design?
What happens to our drawings after we send them?
Can you meet an EN 1090 execution class requirement?
What are your welding qualifications?
What is your minimum order, and what are your lead times?
How is the steel packed and shipped?
Can you supply the mill certificates and inspection records?
Can a long-span truss ship as one piece?
How do you control tolerance on assembly-critical members?
Frequently asked about Space Frames & Long-span Trusses
Do you work to our drawings, or do you design?
We work to your drawings. Our EN 1090-2 certificate states "Design: Not include" — we are a make-to-print fabricator, so the engineering responsibility stays with your consultant or EPC contractor. Send us the shop drawings or the design drawings with a scope description and we will quote the fabrication.
What happens to our drawings after we send them?
They remain your property. We use them to quote and fabricate your job and we do not share them or reuse them on other projects. If your project requires a confidentiality agreement before you send anything, tell us and we will sign yours.
Can you meet an EN 1090 execution class requirement?
Yes, up to EXC3. Our certificate 1128-CPR-10.09.0686 is issued by EUROCERT S.A. in Greece under EN 1090-2:2018, covers execution class EXC3, and is valid until 13 March 2028 under annual surveillance. EXC3 covers bridges and other high-consequence structures; EXC1 and EXC2 are included below it. You can verify the certificate with EUROCERT directly.
What are your welding qualifications?
We hold ISO 3834-2:2021 (certificate 10.09.0687), the comprehensive tier of the welding quality standard, and our welding coordinator holds the International Welding Engineer (IWE) qualification per ISO 14731:2019 §6.2.2. Our welding procedure qualification records cover processes 135 (MAG), 136 (FCAW) and 135+121, material group 1.2, at plate thicknesses up to 30 mm.
What is your minimum order, and what are your lead times?
Both are confirmed per project rather than quoted as a blanket figure — our export projects have ranged from 5 tonnes to 2,000 tonnes, and lead time depends on tonnage, complexity and coating scope. Send the drawings and target dates and we will confirm both in writing before you commit.
How is the steel packed and shipped?
Sea freight, packed for container or breakbulk depending on member length and tonnage. We have shipped to 14 countries including Thailand, Indonesia, Cambodia, the Philippines, Egypt and Türkiye. Tell us the destination port and incoterms you need quoted.
Can you supply the mill certificates and inspection records?
Yes. Material traceability and inspection documentation are part of what the EXC3 execution class and ISO 3834-2 require, so the records exist as a matter of course. Tell us at enquiry stage what your consultant needs to see and in what format.
Can a long-span truss ship as one piece?
Sometimes — we have shipped complete trusses on lowboys domestically. For export it depends on container and breakbulk limits for the destination, so we normally split at bolted splices designed with your engineer. Tell us the site lifting plan and we will work back from it.
How do you control tolerance on assembly-critical members?
End milling and section straightening, before assembly. On long-span work the truss is built on the ground and lifted whole, so if the member lengths are wrong nothing goes into place. This is what the milling and straightening lines are for.
Get a quote for Space Frames & Long-span Trusses
Send your drawings and tonnage. We will confirm scope and lead time before quoting.