Question 1

Who is the leading steel grating exporter from India?

Accepted Answer

There's no single official leader in this category either. Grating manufacture spreads across several Indian hubs, and the differentiator worth checking is whether a supplier genuinely electroforges (rather than substituting press-locked panels and calling them the same thing), holds IS 2713 or BS 4592 test reports, and galvanizes in-house. Vajra International manufactures electroforged steel gratings in Howrah under ISO 9001:2015 and exports FOB/CIF to 30+ countries.

Question 2

What is the HS code for steel gratings exported from India?

Accepted Answer

Electroforged steel gratings typically export under HS 73084000 (structures and parts, iron/steel, covering scaffolding, shuttering and propping) or 73089090 (other structures), depending on the specific product and end use. Confirm with your customs broker which applies to your order. Under India–UAE CEPA, HS 7308 clears at 0% duty with a valid Certificate of Origin.

Question 3

What is the GST rate for steel gratings in India?

Accepted Answer

Gratings sit under HSN 7308 and carry 18% GST inside India. Exports go out zero-rated, either under an LUT with no IGST charged or with IGST paid and refunded afterward. An overseas buyer's FOB or CIF price carries only their own country's import duty and VAT, nothing Indian.

Question 4

Electroforged or press-locked grating: which should I specify?

Accepted Answer

Electroforged (forge-welded) grating resistance-welds every bearing bar to cross bar intersection under pressure and current, producing one monolithic, inspectable panel. That's the standard for heavy industrial platforms, refineries and offshore work. Press-locked grating presses cross bars through slots without welding: lighter duty, lower cost, adequate for pedestrian walkways and architectural applications. For load-bearing plant flooring, specify electroforged.

Question 5

What is the price of electroforged steel grating from India?

Accepted Answer

Hot-dip galvanized mild-steel grating in 40×5 mm bearing bar runs roughly USD 750 to 1,000 per tonne, or USD 30 to 42 per m², FOB India. Heavier bearing bars at 65×5 mm push that to around USD 65 to 85 per m². Stainless steel 304 panels typically cost 3 to 4 times the mild-steel HDG price. These are budgeting figures; the firm number depends on spec, quantity and current steel cost.

Question 6

What bearing bar size should I specify for a walkway or platform?

Accepted Answer

For a pedestrian industrial walkway at 1000 mm clear span, 40×5 mm bearing bar is typically adequate. At 1200 mm span, move to 50×5 mm. For spans above 1500 mm or near vehicle traffic, specify 65×5 mm or heavier. Always confirm against IS 2713 or BS 4592 load tables for your specific span and load case rather than guessing from span alone.

Question 7

Hot-dip galvanized or pre-galvanized (electro-galvanized) grating: which is right?

Accepted Answer

Hot-dip galvanized after fabrication (IS 4759 / ASTM A123, 65 to 85 microns) is what any outdoor, humid, coastal or industrial-wash environment needs, since it coats every cut edge and weld point. Pre-galvanized or electro-galvanized grating leaves cut edges bare and fails quickly outdoors. Specify HDG unless the panels sit in a permanently dry, sheltered indoor space.

Question 8

What documents come with an exported grating order?

Accepted Answer

Mill Test Certificate for the base steel, hot-dip galvanizing certificate stating zinc thickness, a Certificate of Origin for trade-agreement duty preference, and a commercial invoice with the correct HS code. For structural applications, arrange third-party inspection through SGS, TÜV or Bureau Veritas before shipment.

Question 9

Is there a minimum order quantity for steel gratings?

Accepted Answer

There's no fixed minimum internationally. Gratings commonly travel in the same container as cable tray, steel supports or handrails. Panel size, up to 1000×6000 mm, and the bearing-bar spec set the weight per panel, so tell us your total m² and destination port and we'll work out the most economical shipment.

Question 10

What is the lead time for grating export from India?

Accepted Answer

Standard bearing-bar and pitch configurations typically ship in 3 to 5 weeks from order confirmation. Custom panel sizes, non-standard bar pitch or large stair-tread quantities extend that. Share the layout drawing early; bar pitch and panel-cutting detail is usually what sets the schedule.

Question 11

What is the difference between IS 2713 and BS 4592 for gratings?

Accepted Answer

IS 2713 is the Indian standard for steel gratings, covering bearing-bar and cross-rod dimensions and load classification. BS 4592 is the British standard, widely referenced on Gulf and Commonwealth-market tenders, covering similar load-table and open-area requirements but with different reference tables. A manufacturer working to both can certify the same panel against either; tell us which one your project specifies.

Question 12

What open area percentage do steel gratings typically have?

Accepted Answer

Standard bearing-bar and cross-rod configurations give roughly 55 to 70% open area, depending on bar pitch and cross-bar spacing, enough for drainage, ventilation and light transmission while holding load capacity. Tighter pitch at 30 mm reduces open area but suits finer mesh needs for dropped-object protection. Wider pitch at 60 mm increases open area for maximum ventilation and drainage.

Question 13

Mild steel or stainless steel grating: which environment needs which?

Accepted Answer

Hot-dip galvanized mild steel covers the large majority of industrial platforms, walkways and plant flooring cost-effectively. Stainless steel, 304 for general corrosion resistance or 316 where chlorides are present, is reserved for chemical plants, food and pharma facilities, and offshore or marine applications where even HDG steel would corrode too quickly or contaminate the process.

Question 14

How do I check if a grating supplier is a genuine manufacturer or a trader?

Accepted Answer

Ask for a description of the production process. Electroforging needs a dedicated welding press that most general fabricators simply don't own. Ask for a sample MTC and galvanizing certificate from a recent lot. Ask what their daily electroforging capacity is; a real manufacturer knows this number instantly, a trader hesitates. And ask about custom cutting: in-house equipment means an easy yes, subcontracted work means a slower, vaguer one.

Question 15

Does Indian grating meet Gulf and Australian project standards?

Accepted Answer

Yes. Manufacturers worth considering build to IS 2713 and BS 4592, and can certify galvanizing to ASTM A123, which covers Gulf, UK-influenced and general international specifications off one production line. Tell us the standard your consultant references and it goes on the test certificate.

Question 16

How are stair treads and nosings specified for grating stairs?

Accepted Answer

Grating stair treads get pre-fabricated to the stringer width with a serrated, anti-slip nosing at the leading edge, essential in wet or oily industrial environments. Standard going, or tread depth, is 240 or 270 mm. Send the stringer drawing and stair pitch and treads get cut, drilled and galvanized to match exactly.

Question 17

Can gratings be custom-cut to non-standard shapes?

Accepted Answer

Yes, provided the manufacturer has in-house cutting equipment rather than subcontracting the work out. Circular, angled or irregular shapes around columns, ducts and equipment penetrations get cut and banded to finish the edge. Ask specifically whether custom shapes are cut in-house; it's one of the clearer tells for whether you're dealing with a real fabricator or a reseller.

Question 18

How does grating compare to chequered plate for industrial flooring?

Accepted Answer

Grating ventilates, drains and lets light through, which makes it the right pick for platforms above process areas, walkways over drains, or anywhere trapped gas, liquid or heat buildup is a concern. Chequered plate is a solid anti-slip surface: better where a fully enclosed floor is needed to contain spills or stop dropped tools falling through, but it won't ventilate. Many plants use both, split by zone.

Question 19

What is the price difference between mild steel HDG and stainless steel grating?

Accepted Answer

Stainless steel 304 grating typically costs 3 to 4 times hot-dip galvanized mild steel for the same bearing-bar spec, a mix of raw material cost and slower fabrication. 316 runs higher still. Specify stainless only where the corrosion environment genuinely demands it; HDG mild steel remains the economical default for most industrial applications.

Question 20

Which region of India is best for sourcing electroforged gratings?

Accepted Answer

Kolkata/Howrah has real electroforging and hot-dip galvanizing depth, close to Kolkata/Haldia port access, and a manufacturer working there can bundle gratings with cable tray, structural steel and steel supports into one consolidated shipment for an EPC project.

Question 21

What load class should I specify for a mezzanine or access platform?

Accepted Answer

Load class depends on expected foot traffic and any equipment or trolley loads crossing the platform; light pedestrian traffic needs far less than a mezzanine storing pallets or carrying rolling equipment. Share the intended use, span and any point loads, wheel loads or stored material weight, and we'll confirm bearing-bar size and pitch against IS 2713 or BS 4592 tables.

Question 22

Can gratings be supplied with clips and fixing hardware included?

Accepted Answer

Yes. Panel clips, saddle or toe-board type, along with banding and fixing bolts, come matched to the panel finish so the whole system installs without you sourcing separate fasteners on site. Specify your support-beam spacing and type, I-beam, channel or angle, so the correct clip type gets included.

Question 23

What is the difference between grating panel size options?

Accepted Answer

Standard electroforged panels run up to 1000×6000 mm, though most projects actually use smaller modular panels, say 1000×3000 mm, for easier handling and installation, then join them with couplers or banding on site. Large single panels cut down on joints but raise handling difficulty and freight footprint, so weigh that against your site's crane capacity.

Question 24

Do gratings need a specific surface finish for anti-slip performance?

Accepted Answer

The bearing-bar top surface is typically serrated with small saw-tooth notches during forming for slip resistance, standard on most industrial panels. A plain, non-serrated top surface is sometimes specified for architectural or decorative applications where slip resistance matters less. For wet, oily or outdoor platforms, always specify serrated.

Question 25

How is a grating quotation structured: by weight or by area?

Accepted Answer

Gratings get quoted per tonne for heavier bearing-bar specs, or per square metre for lighter, standard configurations. Ask for both figures so you can compare specs on a like-for-like basis. Larger bearing bars and tighter pitch push weight per m² up and cost with it, so share your actual load requirement rather than fixing on a bar size upfront.

Question 26

What does 'electroforged' mean, and how is it different from press-locked?

Accepted Answer

Electroforged gratings fuse the cross-rod into the bearing bar with a resistance-weld pulse, the bars become a single rigid unit. Press-locked gratings hold the cross-rod in a notched bearing bar by friction (sometimes with adhesive). Electroforged is stronger, more durable, and the international default for industrial platforms.

Question 27

Which IS or BS standard should the grating meet?

Accepted Answer

IS 2713 in India, BS 4592 in the UK, NAAMM ANSI-MBG 531 in the US. The standards specify bar dimensions, weld quality, load testing and tolerance. Our gratings are produced to IS 2713 with bar specifications interchangeable with BS 4592, accepted by most international EPCs.

Question 28

How is bar pitch chosen, appearance or load?

Accepted Answer

Bar pitch (30, 40, 60 mm) trades off open area against load capacity. Closer pitch (30 mm) means more bearing bars per metre, higher load, but heavier and harder to clean. Wider pitch (60 mm) has more open area for spilled fluids and easier cleaning. Refineries usually choose 40 mm as a balance.

Question 29

What is 'serrated' vs 'plain' top, and when does it matter?

Accepted Answer

Serrated bearing bars have a saw-tooth top edge for slip resistance, required on stair treads, walkways above oil-and-grease zones, and any wet-process platform. Plain top is fine for indoor dry platforms and trench covers. Serrated costs about 8–12 % more.

Question 30

Is hot-dip galvanizing always necessary?

Accepted Answer

Almost always, the welded grating has many small crevices that corrode rapidly without zinc coating. HDG to IS 4759 / ASTM A123 with 75–85 µm zinc is the working standard. Self-colour (un-coated) panels are used only for indoor, short-life, painted-over applications.

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