HSN code 73066900 is the 8-digit tariff item for other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel, of other non-circular cross- section, under heading 7306 and sub-heading 730669 (Chapter 73). GST is 18%: 9% CGST + 9% SGST within a state, or 18% IGST to another state. Rates as of 2026-10-21.
HSN 73066900 at a glance
| Tariff item (8 digits) | 73066900 |
|---|---|
| Heading (4 digits) | 7306: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel |
| Sub-heading (6 digits) | 730669: Of other non-circular cross- section |
| Chapter | 73: Articles of iron or steel |
| Description | Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel, of other non-circular cross- section |
| GST rate | 18% |
| Within the state | 9% CGST + 9% SGST (or UTGST) |
| To another state | 18% IGST |
9/2025-CT(R), Schedule II, S. No. 284 (HSN 7306) covers "Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel" at 18%.
The rate entry for this code
The description is the notification's own wording. An entry applies only when the goods match it.
| HSN scope | Description of goods | GST | CGST + SGST | Entry |
|---|---|---|---|---|
| 7306 | Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel | 18% | 9% + 9% | 9/2025-CT(R), Schedule II, S. No. 284 |
Worked example: a ₹1,000 sale under HSN 73066900
Taxable value ₹1,000.00. Within your state: CGST ₹90.00 + SGST ₹90.00 = ₹180.00, invoice total ₹1,180.00. To a buyer in another state: IGST ₹180.00, the same total.
For other amounts, or to work back from a tax-inclusive price, use the GST calculator.
How many HSN digits to print on the invoice
Notification 78/2020-Central Tax sets the minimum by aggregate turnover in the previous financial year: up to ₹5 crore, at least 4 digits (7306) on tax invoices to registered buyers (optional on B2C invoices); above ₹5 crore, at least 6 digits (730669) on all tax invoices. Exports and imports are declared on the shipping bill or bill of entry under the full 8-digit tariff item (73066900), so most exporters print 8 digits on their GST invoices too.
The HSN-wise summary in GSTR-1 uses the same code, so set it once on the item in your billing software. FundRaksha Book stores the HSN and GST rate on each item, splits CGST, SGST and IGST on every bill, and keeps stock and party ledgers alongside.
Other tariff items under heading 7306
- HSN 73061011: Galvanised pipes, of iron (other tubes, pipes and hollow profiles, of iron or steel, line pipe of a kind... (18%)
- HSN 73061019: Galvanised pipes: other (other tubes, pipes and hollow profiles, of iron or steel, line pipe of a kind... (18%)
- HSN 73061021: Line pipe of a kind used for oil or gas pipelines, non-galvanised pipes, of iron (18%)
- HSN 73061029: Line pipe of a kind used for oil or gas pipelines, non-galvanised pipes: other (18%)
- HSN 73061100: Welded, of stainless steel (18%)
- HSN 73061911: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73061921: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73061931: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73061939: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73061941: Clad, plated or coated (other tubes, pipes and hollow profiles, of iron or steel, other, non-galvanised... (18%)
- HSN 73061949: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73062010: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73062090: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73062100: Welded, of stainless steel (18%)
- HSN 73062911: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73063010: Other, welded, of circular cross-section, of iron or non-alloy steel, of iron (18%)
- HSN 73063090: Other, welded, of circular cross-section, of iron or non-alloy steel: other (18%)
- HSN 73064000: Other, welded, of circular cross- section, of stainless steel (18%)
- HSN 73065000: Other, welded, of circular cross- section, of other alloy steel (18%)
- HSN 73066010: Other, welded, of non-circular cross-section, of iron (18%)
- HSN 73066090: Other, welded, of non-circular cross-section: other (18%)
- HSN 73066100: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
- HSN 73069011: Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of... (18%)
See every rate entry for the heading on the HSN 7306 page, or all Chapter 73 headings.
Sources
Codes and descriptions: GSTN HSN master (HSN_SAC.xlsx, sheet HSN_MSTR), GST portal, file dated 13.10.2026, read on 21.10.2026; descriptions were converted from capitals and joined with their heading and sub-heading text. Rates: Rates from Notification 9/2025-Central Tax (Rate), 17.09.2025, as amended by Notification 19/2025-Central Tax (Rate) (from 01.02.2026) and Notification 01/2026-Central Tax (Rate) (from 01.05.2026); nil-rated goods from Notification 10/2025-Central Tax (Rate); bricks from Notification 14/2025-Central Tax (Rate).