Other

Parts of industrial heat-treatment and solar water-heating equipment

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 11329 · PESO OVERLAY

HSN 8419 90 90 (parts of industrial heat-treatment machinery and non-electric water heaters) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 11329:2018, IS 12933 (Parts 1 and 2):2003, IS 16544:2016, or IS 16542:2016 is mandatory under the ISI Mark Scheme, depending on part category, with the finned-type heat-exchanger obligation effective from 01 October 2023 and the solar water-heating parts obligation from 14 April 2025. Petroleum and Explosives Safety Organisation approval applies as a separate customs-clearance overlay for pressure vessels and cylinders within scope.

What this is

HSN code

8419 90 90

Chapter

84 · Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 11329 · effective 01-10-2023

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

PESOPESO·Petroleum and Explosives Safety Organisation

Procedural directions for customs clearance are issued by: Central Board of Indirect Taxes and Customs.

Compliance steps

1
Identify which IS applies to the specific part being imported: IS 11329:2018 for finned-type heat exchangers used in room air conditioners; IS 12933 (Parts 1 and 2):2003 for solar flat-plate collectors; IS 16544:2016 for all-glass evacuated tube solar water-heating systems; IS 16542:2016 for storage water tanks for all-glass evacuated tube solar water-heating systems.
S.O. 4354(E) dated 05-12-2019 (as amended) · S.O. 4485(E) dated 08-10-2024
2
Verify the foreign manufacturer's BIS CM/L licence number against the applicable IS on the BIS online register before placing the purchase order. The CM/L must cover the specific part category, product specification, and manufacturing facility.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · S.O. 4354(E) · S.O. 4485(E)
3
Ensure every part bears the ISI mark and the supplier's CM/L number. Marking must appear on the part itself; marking only on the outer packaging does not satisfy the ISI Mark Scheme requirements under Scheme-I.
BIS (Conformity Assessment) Regulations, 2018 · Scheme-I of Schedule-II · Air Conditioner and its Related Parts Hermetic Compressor and Temperature Sensing Controls (QC) Amendment Order, 2025
4
If the consignment includes pressure vessels or oxygen cylinders, obtain PESO approval through the PESO online system. During COVID-era relaxations, customs clearances were permitted without physical inspection per Instruction 12/2021-CUS; verify current PESO requirements with the issuing authority before shipment.
CBIC Instruction 12/2021-CUS dated 25-05-2021 · Gas Cylinders Rules, 2016
5
Quote the supplier's BIS CM/L number and the applicable IS reference on the bill of entry. Check the exemption paragraphs under S.O. 4354(E) and its amending notifications — S.O. 1518(E), S.O. 4671(E), S.O. 5095(E), S.O. 5972(E), S.O. 32(E), S.O. 695, and S.O. 1815(E) — to determine whether any specific part category is carved out; document the exemption basis on the entry if relied upon.
S.O. 4354(E) dated 05-12-2019 and amending notifications · S.O. 4485(E) dated 08-10-2024 · BIS Act, 2016 · Customs Act, 1962

A word of counsel

The single most common error on this tariff line is treating HSN 8419 90 90 as a single-IS regime when four Indian Standards apply across distinct part categories, each with a different enforcement date and notifying order. An importer who correctly obtains a CM/L against IS 11329:2018 for finned-type heat exchangers and then sources solar water-heater storage tanks under the same licence faces detention, because IS 16542:2016 is a separate standard requiring its own CM/L. Confirm the applicable IS and its specific enforcement date for every part category in the purchase order before contracting with the supplier.

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Frequently asked

Does HSN 8419 90 90 require BIS certification?

Yes. Parts classified under this tariff line require Bureau of Indian Standards ISI Mark Scheme certification; the applicable standard is IS 11329:2018 for finned-type heat exchangers (effective 01-10-2023), IS 12933 (Parts 1 and 2):2003 for solar flat-plate collectors, IS 16544:2016 for all-glass evacuated tube systems, or IS 16542:2016 for associated storage tanks (effective 14-04-2025), depending on product category.

Does a single CM/L licence cover all part categories under HSN 8419 90 90?

No. Each Indian Standard requires a separate CM/L; a licence against IS 11329:2018 does not authorise import of solar water-heater parts under IS 16542:2016 or IS 16544:2016, and a scope mismatch triggers detention at port.

Is PESO approval required for every consignment under this HSN?

PESO approval applies only to pressure vessels and cylinders within the Gas Cylinders Rules, 2016 scope; standard finned-type heat exchangers and solar water-heater parts do not require PESO approval. The COVID-era relaxation under CBIC Instruction 12/2021-CUS for medical oxygen cylinders was a time-limited measure; importers should verify the current PESO position before relying on it.

Are there any exemptions from the BIS QCO obligation under S.O. 4354(E)?

Yes. Paragraph 2 of S.O. 4354(E), as amended by S.O. 1518(E), S.O. 4671(E), S.O. 5095(E), S.O. 5972(E), S.O. 32(E), S.O. 695, and S.O. 1815(E), sets out specific carve-outs; importers relying on an exemption must document the applicable paragraph on the bill of entry.

Last verified against gazette notifications: 2026-05-18. Source: BIS / PESO / CBIC / Indian Customs CUSDATA.