Question 1

Who is the leading structural steel fabricator and exporter from India?

Accepted Answer

There's no single verified leader here either. Heavy structural fabrication, built-up sections, plate girders, brackets, is spread across many Indian fabricators of varying capability. Buyers shortlist on qualified welding procedures (WPS/PQR), IS 2062 / IS 800 design compliance and genuine in-house fabrication capacity, not marketing claims. Vajra International fabricates structural steelwork in Howrah to IS 800, IS 2062 and AWS D1.1.

Question 2

What is the HS code for structural steel fabrication exported from India?

Accepted Answer

Built-up sections, plate girders and heavy fabrications typically export under HS 73089090 (other structures and parts of structures, iron/steel) or 73081000 (bridges and bridge sections) for specific bridge-related work. Confirm the exact subheading with your customs broker for your fabrication type.

Question 3

What is the GST rate on structural steel fabrication in India?

Accepted Answer

Structural steelwork sits under HSN 7308 and carries 18% GST domestically. Exports ship zero-rated, under an LUT with no IGST or with IGST paid and refunded. An overseas buyer's FOB or CIF price carries only their own country's import duty, not Indian GST.

Question 4

What is the price of custom structural steel fabrication from India?

Accepted Answer

Structural fabrication is priced by weight, tonnage, with a significant premium for welding complexity, connection detailing and finishing. A simple built-up beam costs far less per kg than a plate girder with heavy stiffening and precise fit-up requirements. Share your structural drawing and specification for an accurate quote; generic per-tonne estimates are unreliable here given how much labour content varies.

Question 5

What is the difference between IS 2062 and IS 800 for structural steel?

Accepted Answer

IS 2062 specifies the material: the steel grade, chemical composition and mechanical properties, E250, E350 and so on. IS 800 is the general design and construction code, covering how members are sized, connected and detailed using that material. Both apply together. IS 2062 tells you what the steel is; IS 800 tells you how it's used structurally.

Question 6

Built-up sections or standard rolled sections: which should I specify?

Accepted Answer

Standard rolled sections, I-beams, channels, angles, are more economical where a standard size meets the load requirement. Built-up sections, welded from plate into custom I or box profiles, get used where a standard rolled size doesn't exist for the required capacity, or where an unusual cross-section is needed for architectural or specific structural reasons. Your structural engineer's design will specify which is needed; it's a calculated decision, not a preference.

Question 7

What welding standard governs structural steel fabrication in India?

Accepted Answer

AWS D1.1, the American Welding Society structural welding code, is widely referenced internationally alongside Indian IS 816 welding practice. A fabricator should hold qualified Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR) for the specific joint types and material thickness on your project. Ask for these before awarding the contract, not after.

Question 8

What documents come with a structural steel export order?

Accepted Answer

Mill Test Certificate for the structural steel grade, welding procedure qualification records, dimensional inspection reports, finish certification (hot-dip galvanizing thickness or paint specification compliance), and a Certificate of Origin for duty relief.

Question 9

Is there a minimum order quantity for structural steel fabrication?

Accepted Answer

There's no fixed minimum. Structural fabrication is ordered against a specific project's structural bill of quantities. Smaller quantities are often consolidated with other steel products, supports, gratings, into one shipment to improve freight economics.

Question 10

What is the lead time for structural steel fabrication from India?

Accepted Answer

Standard built-up sections and brackets typically run 6 to 8 weeks from drawing approval to shipment, depending on total tonnage and welding complexity; heavy plate girders or large project quantities extend this further. Structural drawing approval is usually the critical-path item, so get this finalized early in project planning.

Question 11

Hot-dip galvanized or epoxy/PU painted: which finish for structural steelwork?

Accepted Answer

Hot-dip galvanizing suits outdoor, long-service structures where decades of maintenance-free corrosion protection matters most. Epoxy/PU painting is common where a specific safety colour code is required, for indoor structures, or where the structure's size exceeds practical galvanizing bath dimensions, very large plate girders sometimes fall into this category. Confirm your galvanizing bath size constraints against your largest fabricated piece early in design.

Question 12

How do I check if a structural steel fabricator has genuine heavy-fabrication capacity?

Accepted Answer

Ask for their welding procedure qualification records, crane or handling capacity for heavy pieces, and a reference project of comparable scale and complexity. Find out whether cutting, forming and welding are all in-house. A fabricator who subcontracts heavy welding to unknown third parties can't guarantee consistent quality across your order.

Question 13

Does Indian structural steel fabrication meet international building codes?

Accepted Answer

Yes. Building to IS 800/IS 2062 is standard for Indian fabricators, who can also reference EN 1090, the European structural steelwork execution standard, or AWS D1.1, the American welding code, for export projects. Confirm which code governs your project's design and specify it explicitly in the enquiry.

Question 14

What plate thickness range can be fabricated into structural steel components?

Accepted Answer

This depends on the fabricator's shearing, forming and welding equipment capacity. Confirm the maximum plate thickness they can process for your specific component; plate girders and heavy brackets often need thicker plate than standard built-up beams. Ask this specifically rather than assuming standard capacity covers your heaviest section.

Question 15

Can structural steel be fabricated to a specific architectural or engineering drawing?

Accepted Answer

Yes, and this is the core service. Send the structural engineer's drawing with member sizes, connection details, welding symbols and finish specification, and fabrication proceeds exactly to that design, with shop drawings typically reviewed and approved before cutting begins.

Question 16

What inspection is done on structural steel before shipment?

Accepted Answer

Dimensional inspection against approved shop drawings, weld inspection, visual and NDT such as ultrasonic or radiography where specified for critical joints, and finish verification, galvanizing thickness or paint DFT. Third-party inspection from SGS, TÜV or Bureau Veritas is arranged where the project specification requires it.

Question 17

Which region of India is best for sourcing structural steel fabrication?

Accepted Answer

Kolkata/Howrah has real heavy structural fabrication and galvanizing depth, with export logistics through Kolkata/Haldia ports. Manufacturers there producing structural steel alongside cable tray, supports and gratings can supply a consolidated plant-steelwork package for one project.

Question 18

What is a plate girder and when is it needed instead of a rolled beam?

Accepted Answer

A plate girder is a welded I-section built from separate flange and web plates, used when the required span or load capacity exceeds what standard rolled I-beam sizes can provide economically. It's common in heavy industrial buildings, bridges and long-span structures. Your structural engineer's calculation determines when a plate girder is needed versus a standard rolled section.

Question 19

How is structural steel fabrication quoted: by weight or by drawing complexity?

Accepted Answer

Both factor in. Base material cost scales with tonnage, but welding labour, which often exceeds material cost on complex fabrications, scales with joint count, weld length and connection complexity, not weight alone. Get a quote against your actual drawing rather than comparing suppliers on a flat per-tonne rate, since two structures of identical weight can carry very different labour content.

Question 20

Can heavy structural steel components be shipped as complete assemblies?

Accepted Answer

Within container and crane-handling limits, yes. Components get shop-assembled where practical to reduce site work. Pieces exceeding shipping envelope or weight limits are match-marked and shipped as sections for site-bolted or site-welded final assembly, with erection drawings supplied to guide the sequence.

Question 21

What is the difference between IS 800 and Eurocode (EN 1993) for structural steel design?

Accepted Answer

IS 800 is the Indian code for general construction in steel, covering member and connection design methodology. EN 1993 (Eurocode 3) is the equivalent European code, with EN 1090 governing execution and fabrication quality. Design philosophy and safety factors differ between the two, so a project should specify one governing code, not mix calculations from both.

Question 22

Do structural steel fabricators provide erection support or drawings?

Accepted Answer

Match-marking and erection sequence drawings are standard deliverables so site teams can assemble the structure correctly. On-site erection supervision or labour is a separate scope that some fabricators offer and others don't. Confirm this explicitly if you need it, since it's not automatically included with fabrication and shipment.

Question 23

Can I get structural steel, cable tray and gratings from one supplier for a full plant project?

Accepted Answer

Yes. Sourcing all three from one Howrah manufacturer consolidates the shipment, keeps documentation, MTC, welding records, galvanizing certs, COO, under one supplier, and is a practical approach for EPCs building out a complete industrial plant's structural and cable-management scope.

Question 24

When is a built-up section better than a rolled section?

Accepted Answer

Built-up sections (welded from plate) are right when the required cross-section doesn't exist as a rolled section, or when the span/load combination would need a non-standard heavy rolled. Big industrial buildings, plate girders, and crane runways routinely use built-ups. Rolled sections are the cheaper choice when they exist for the load.

Question 25

Which steel grade. E250 or E350?

Accepted Answer

E250 (Fe410) is the workhorse for general structural work. E350 (Fe490) gives 40 % higher yield and is justified when section depth is constrained or weight is critical. Heavy industrial buildings often mix the two. E250 for columns, E350 for trusses and crane beams.

Question 26

What welding qualification do you operate?

Accepted Answer

Welders are qualified to AWS D1.1, ASME IX and EN ISO 9606. Procedures (WPS, PQR) are pre-approved by the customer's TPI on first contract and shared as part of the QA dossier. We employ in-house welding inspectors qualified to AWS CWI / CSWIP 3.1.

Question 27

How are built-up girders transported overseas?

Accepted Answer

Girders up to 12 m ship inside 40 ft containers; longer girders go on flat-rack containers with crane-loading. Coastal shipping from Indian ports to GCC and East Africa is well-established, we use Mundra, Pipavav, Mumbai, Chennai, Visakhapatnam depending on destination.

Question 28

What is the inspection regime on a structural-steel batch?

Accepted Answer

Plate UT before fabrication, fit-up checks before welding, visual on every weld, MPI/UT on critical welds (to the project's NDE schedule), galvanizing thickness on every member, and dimensional check before painting. Reports are batch-linked.

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