HSN code 8405: Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers

HSN heading 8405 sits in chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). It has 4 8-digit tariff items. On a tax invoice, businesses with turnover up to ₹5 crore show at least the 4-digit code 8405; above ₹5 crore, the 6-digit sub-heading.

⚠️About GST rates: GST rates on many goods changed from 22 September 2025, when most items moved to the 5% and 18% slabs and a few to 40%. This finder lists codes and descriptions only — confirm the rate for your item in the current CBIC rate notification before you invoice.

8-digit tariff items under 8405

HSN code	Description
84051010	Producer Gas Or Water Gas Generators, With Or Without Their Purifiers; Acetyle…
84051020	Producer Gas Or Water Gas Generators, With Or Without Their Purifiers; Acetyle…
84051090	Producer Gas Or Water Gas Generators, With Or Without Their Purifiers; Acetyle…
84059000	Parts

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