Steel Trusses and Canopies Fabrication India
Steel trusses and canopies are among the most architecturally prominent structural steel elements in the built environment. A well-designed and well-fabricated steel truss — whether spanning the roof of a bus terminal, covering the entrance to a commercial building, or carrying the roof of an industrial shed across a wide clear span — is a structure that people notice and interact with every day.
Getting the fabrication right matters not just structurally but visually: weld quality, dimensional consistency, and surface finish are all visible in an exposed steel truss in a way they are not in a hidden structural column. Sun Corporation fabricates steel trusses and canopies for industrial, commercial, and infrastructure projects across India.
IS 800:2007 steel truss and canopy fabrication from our own Hyderabad workshop — jig-controlled fabrication for repeat trusses, MPI-inspected welds on exposed members, and workshop pre-assembly before dispatch. Request a quotation
Types of steel trusses Sun Corporation fabricates
Industrial roof trusses
The industrial roof truss is the most common type in Indian steel truss fabrication — the triangulated steel frame that carries the roof sheeting of a factory, warehouse, or shed across the span between columns. Pratt, Warren, and Howe truss configurations are the standard options for parallel chord industrial trusses. For shorter spans up to about 18 metres, angle section trusses with bolted connections are economical and straightforward to fabricate and erect. For longer spans of 20 to 40 metres, tubular hollow section trusses with welded nodes are more structurally efficient and produce a cleaner visual appearance where the truss is exposed.
Long-span roof trusses for airports, stadiums and commercial buildings
Long-span roof truss fabrication — for spans above 30 metres — involves significantly more structural complexity. The chord forces are much higher, the node connections are more complex, and the truss depth increases to maintain acceptable deflection under design loads. A roof truss spanning 45 metres might be 3 to 4 metres deep at mid-span, with chord sections that are heavy plate built-up members rather than standard angles or hollow sections. For long-span applications, Sun Corporation pre-assembles the most complex truss sections in the workshop before dispatch — confirming that all components fit correctly and the overall truss geometry matches the approved shop drawing dimensions.
Entrance canopies and covered walkways
Steel canopy fabrication for building entrance canopies, covered walkways, and transit shelter roofs demands more attention to detail quality and visual finish than industrial truss work. An entrance canopy at a commercial building or an airport is one of the first things a visitor sees, and the weld quality, the paint finish, and the dimensional consistency of the fabricated steelwork are all immediately apparent. For entrance and walkway applications, Sun Corporation grinds flush welds on exposed faces, consistent weld size and profile on visible connections, and high-quality paint application using multiple-coat systems in controlled workshop conditions.
What good steel truss fabrication looks like
A structurally adequate steel truss is not difficult to fabricate — almost any competent welding shop can produce a truss that will carry its design loads. What separates good truss fabrication from average is dimensional accuracy, weld quality on exposed members, and consistency across a set of identical trusses. At Sun Corporation, truss fabrication uses jigs for repetitive trusses — all chord and web members are positioned in the same jig for every truss in the set, ensuring consistent node positions and overall dimensions. The project inspection plan defines the welds requiring magnetic particle testing and their acceptance criteria. Visible welds are dressed only where the approved detail permits; grinding must preserve the required weld size and profile.
IS standards for trusses and canopies
- IS 800:2007 — primary design and fabrication standard for all steel truss and canopy structures.
- IS 875 Parts 1, 2 and 3 — dead, imposed, and wind loads. Wind often governs design of long-span roof trusses.
- IS 1893:2016 — seismic design in zones III and above.
- IS 2062 — hot-rolled steel material standard.
- IS 4923 — hollow steel sections for structural use. Governs tubular section trusses.
- IS 1477 — painting of structural steel.
Steel trusses and canopies fabrication cost in India — 2026
Send the drawings, member schedule, steel grade, joint details and coating specification for a project-specific quotation. Confirm whether the package includes steel supply, fabrication, inspection, transport, unloading and erection. Site access, crane responsibilities and required delivery lots must be agreed before the offer is finalised.
Trusses and canopies FAQs
Which truss configurations do you fabricate for industrial roofs?
Pratt, Warren and Howe configurations are the standard options for parallel-chord industrial trusses. Angle-section trusses with bolted connections are economical for spans up to about 18 metres. For spans of 20 to 40 metres, tubular hollow-section trusses with welded nodes are more structurally efficient and give a cleaner appearance where the truss is exposed.
What is the maximum span you fabricate roof trusses for?
The feasible span is confirmed by the structural engineer from the loading, frame depth, stability, deflection and connection design. Send the drawings for fabrication, transport-split and erection review.
Do you pre-assemble long-span trusses before dispatch?
Yes. The most complex truss sections are pre-assembled in the workshop before dispatch, confirming that all components fit correctly and that the overall truss geometry matches the approved shop drawing dimensions.
How is finish quality controlled on exposed canopies?
The approved detail sets the weld profile and any permitted dressing. Visual inspection, supplementary NDT and coating checks follow the project inspection plan; welds must retain the required effective size after finishing.
Which Indian standards apply to truss and canopy fabrication?
IS 800:2007 is the primary design and fabrication standard. IS 875 Parts 1, 2 and 3 cover dead, imposed and wind loads, with wind often governing long-span roof trusses. IS 1893:2016 covers seismic design in zones III and above, IS 2062 the hot-rolled material, IS 4923 hollow structural sections, and IS 1477 painting.
What does truss and canopy fabrication cost per MT?
A project-specific quotation requires the truss geometry, member schedule, steel supply scope, joint details, coating system, inspection plan and erection responsibilities. Transport splits, crane access and site joints also affect the offer.