IS 800 compliant structural steel fabricator India — workshop fabrication and pan India erection

Structural steel fabrication under IS 800:2007 means procuring IS 2062 certified material with valid mill test certificates, cutting and welding to qualified procedures, inspecting every coded weld, and dispatching fabricated members that meet the dimensional tolerances in the issued-for-construction drawings. Sun Corporation Fabricators & Engineers runs that process at our Jeedimetla, Hyderabad workshop — an IS 800 compliant structural steel fabricator serving EPC contractors, PMC teams, and industrial clients across India. Workshop throughput and erection capacity are documented in our manufacturer credentials for EPC tender review.

What an IS 800 compliant structural steel fabricator covers in India

Structural steel fabrication in India is not one thing — it is a family of related processes and capabilities that together produce the steel structures used across Indian construction and industry. Understanding what falls within the scope of a fabricator’s capability is the starting point for any procurement decision.

Shop drawing preparation

Shop drawings — the fabrication-level drawings that the workshop needs to cut, drill, and weld each structural element — are the first step in structural steel fabrication in India. The structural engineer’s design drawings specify member sizes and load requirements. The shop drawing translates this into exact dimensions: the length of every plate, the diameter and position of every bolt hole, the size and length of every weld, the piece mark for every component, and the erection weight. For complex structures like multi-storey frames, transfer trusses, or long-span roof trusses, shop drawing preparation is a significant technical exercise in its own right. Sun Corporation Fabricators & Engineers prepares all shop drawings in-house using Tekla Structures 3D modelling software.

Steel procurement and incoming inspection

Structural steel fabrication in India starts with the right material. IS 2062 is the material standard for hot-rolled structural steel in India — it specifies the mechanical properties (yield strength, tensile strength, elongation), the chemical composition limits, and the supplementary testing requirements (Charpy impact testing for bridge and heavy structural applications). Every steel section and plate used in Sun Corporation Fabricators & Engineers’s fabrication is procured from approved Indian mills with IS 2062 mill test certificates, checked on receipt for dimensional conformance and surface condition, and tagged with heat numbers for traceability throughout the fabrication process and into the final quality dossier.

Cutting, drilling, and forming

The cutting, drilling, and forming operations in structural steel fabrication in India convert raw sections and plates into the precise shapes needed for the fabricated assembly. CNC plasma cutting produces flat plate components with consistent edge quality for welded assemblies. Band saw and circular saw cutting produces section cuts for beam and column work. Punching and drilling produces bolt holes. Press braking and plate rolling produce formed elements for tanks, vessels, and curved structural components. The dimensional accuracy of these operations — checked against the approved shop drawing — determines whether the fabricated elements will fit correctly when assembled.

Welding and weld procedure qualification

Welding is the core process in structural steel fabrication in India. IS 9595 governs the qualification of welding procedures for carbon and carbon-manganese steels — the Weld Procedure Specification (WPS) and the Procedure Qualification Record (PQR) that document that the welding process, parameters, and consumables produce welds with the required mechanical properties. IS 7307 governs welder performance qualification — the individual test that certifies each welder for their specific process, position, and plate thickness range. Sun Corporation Fabricators & Engineers maintains qualified WPS and PQR records for all welding processes used in our workshop, and all our welders are qualified to IS 7307 for their assigned work categories.

Non-destructive testing and inspection

Weld quality in structural steel fabrication in India is verified by non-destructive testing — inspection methods that check the weld without destroying it. The three main NDT methods in Indian structural steel fabrication are ultrasonic testing (UT), magnetic particle inspection (MPI), and liquid penetrant testing (PT). UT detects internal defects in full-penetration butt welds — lack of fusion, porosity clusters, cracks — that are invisible from the surface. MPI detects surface and near-surface defects in ferromagnetic steel — cracks, toe cracks, lack of fusion at weld edges. PT detects surface defects on non-ferromagnetic materials including stainless steel. Sun Corporation Fabricators & Engineers has in-house qualified UT and MPI technicians. Third-party independent inspection is coordinated for projects requiring statutory or client-specified inspection.

IS 800:2007 — the code that governs structural steel fabrication in India

IS 800:2007 — Code of Practice for General Construction in Steel — is the primary design and fabrication standard for structural steel fabrication in India. It was updated in 2007 to align with limit state design principles (replacing the old working stress method) and remains the governing code for all structural steel buildings and structures in India. Key provisions relevant to fabrication include:

• Section 10 — Connections: Bolt and weld design, minimum edge distances, minimum bolt spacings, weld throat thickness calculations, and permissible stress ranges for fatigue design. All connection design in Sun Corporation Fabricators & Engineers’s shop drawings is checked against IS 800:2007 Section 10.
• Section 11 — Working drawings: The minimum content required on structural steel shop drawings in India — member sizes, connection details, surface treatment, piece marks, erection marks, and design basis notes.
• Annex F — Fabrication tolerances: The permitted deviations from specified dimensions in length, cross-section, and straightness for fabricated structural steel members. These tolerances are the basis for Sun Corporation Fabricators & Engineers’s dimensional inspection records.
• Annex G — Erection tolerances: The permitted deviations from vertical and horizontal for erected structural steel members — the basis for Sun Corporation Fabricators & Engineers’s plumb and level survey records during erection.

Types of structural steel fabrication Sun Corporation Fabricators & Engineers handles in India

Sun Corporation Fabricators & Engineers’s structural steel fabrication in India spans the full range of applications in the industrial and infrastructure sectors:

• Industrial shed fabrication — PEB and conventional steel factories, warehouses, logistics centres, and cold storage. The largest single category of structural steel fabrication in India by volume.
• Multi-storey building steel — commercial office frames, industrial multi-storey structures, SMRF connections for seismic zones III and above, transfer trusses, and mezzanine structures.
• Bridge and infrastructure steel — ROB plate girders to IRS B1-2001, pedestrian bridge and foot over bridge steel, and other infrastructure structural steelwork.
• Airport structural steel — terminal structural frames, long-span roof trusses, aircraft hangars, and airside infrastructure.
• Crane and material handling steel — EOT crane runway beams to IS 807:2006, crane columns and brackets, under-slung monorail systems.
• Process plant steel — pipe rack structures, equipment skids, mezzanine platforms, storage tanks to IS 803, and heavy fabrication for industrial plant applications.
• Stadium and sports venue steel — grandstand roof trusses, terrace raker frames, floodlight mast structures, and indoor arena roofs.
• Seaport and marine steel — port building frames, conveyor trestle structures, quayside crane rail beams, and jetty superstructure steel with marine corrosion protection.

IS 800 compliant structural steel fabrication — quality and EPC/PMC documentation

The Indian structural steel fabrication market ranges from single-shed operators with basic welding equipment to fully equipped fabricators with CNC cutting, qualified welding teams, in-house NDT, and comprehensive quality documentation. For any project above 50 MT — and for projects of any size where the structural steel will be part of a building or structure carrying people, process equipment, or critical plant — the quality of the fabricator matters as much as the price.

The key questions to ask any structural steel fabricator in India are: Do you fabricate in your own workshop, or subcontract? Who qualifies the welding procedures? What NDT do you carry out, with what qualified personnel? What quality documentation do you provide at project handover? Can you provide references from structural engineers and project managers on completed projects?

What EPC teams verify at fabricator prequalification — IS 800, WPS/PQR, and NDT records

EPC and PMC reviewers check WPS/PQR records, NDT personnel certificates, and workshop capacity statements before technical bid evaluation. Documentation is available on request — see our manufacturer credentials page.

Sun Corporation Fabricators & Engineers fabricates in our own Hyderabad workshop. Welding procedures are qualified to IS 9595. We have in-house Level II qualified UT and MPI technicians. Our project handover documentation — the quality dossier — covers material test certificates, weld inspection records, dimensional inspection records, and painting inspection records for every fabricated element. Workshop credentials, QA/QC workflows, and tender submittal documentation for EPC and PMC teams are on our manufacturer credentials page. References from structural engineers and project managers on completed projects are available on request.

Structural steel fabrication cost in India — 2026

Structural steel fabrication costs in India in 2026 are typically quoted in rupees per metric tonne (MT) of fabricated steel, delivered to site. The range across project types runs from approximately Rs 75,000 per MT for simple industrial shed steel at the low end to Rs 1,60,000 per MT or more for complex long-span or heavily inspected structural steel at the high end. The key drivers of cost within that range are the steel section size and weight per unit length, the connection complexity, the weld inspection category, the painting specification, and the erection difficulty.

When comparing structural steel fabrication quotations in India, make sure the scope is comparable. A quotation covering only workshop fabrication supply is fundamentally different from one covering fabrication, shop drawings, third-party inspection, primer painting, transport, and erection. Get the scope breakdown in writing, or the cheapest-looking quotation will become the most expensive project when all the missing items are added back in.

Structural steel fabrication enquiries — getting a quote from Sun Corporation Fabricators & Engineers

To get a structural steel fabrication quotation from Sun Corporation Fabricators & Engineers, send us your structural drawings or project scope description. We respond to all enquiries within 24 hours with a preliminary response, and within 48 to 72 hours with a detailed quotation if drawings are available. For projects in Hyderabad and Telangana, we can arrange a site visit within 48 hours. For projects in other states, we advise on transport costs and programme alongside the fabrication quotation.

Contact Sun Corporation Fabricators & Engineers for structural steel fabrication India. Also see: Industrial shed fabrication | Pre-engineered buildings | Crane girder fabrication | ROB construction | Structural steel Hyderabad