Spiral type

Spiral-type heat exchange units for process and HVAC duty

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 11329

HSN 8419 50 13 (spiral-type heat exchange units) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 11329:2018 is mandatory under the ISI Mark Scheme with effect from 01 October 2023, pursuant to the Air Conditioner and its Related Parts Hermetic Compressor and Temperature Sensing Controls (Quality Control) Amendment Order 2025 and the originating S.O. 4354(E). No separate customs-clearance overlay applies beyond the BIS obligation.

What this is

HSN code

8419 50 13

Chapter

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

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 11329:2018 · effective 01-10-2023

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

Compliance steps

1
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 11329:2018 for spiral-type heat exchange units. Verify the supplier's CM/L number, licensed product scope, and manufacturing facility address on the BIS online register before placing the purchase order.
IS 11329:2018 · S.O. 4354(E) dated 05-12-2019 · Air Conditioner and its Related Parts Hermetic Compressor and Temperature Sensing Controls (Quality Control) Amendment Order 2025
2
Ensure every unit bears the ISI mark and the supplier's CM/L number, applied per Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the unit itself, not on outer packaging alone.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · S.O. 4354(E) dated 05-12-2019
3
Quote the supplier's BIS CM/L number on the bill of entry. Customs verifies the CM/L in real time against the BIS register; an absent, expired, or product-scope-mismatched licence triggers consignment detention, demurrage, and potential re-export or confiscation.
BIS Act, 2016 · S.O. 4354(E) dated 05-12-2019 · Customs Act, 1962
4
Check whether the consignment qualifies for an exemption under paragraph 2 of the QCO as amended. Successive amendments — 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) — have modified the exemption schedule; confirm the version in force on the date of importation.
S.O. 1518(E) dated 18-05-2020 · S.O. 4671(E) dated 22-12-2020 · S.O. 5095(E) dated 08-12-2021 · S.O. 5972(E) dated 21-12-2022 · S.O. 32(E) dated 02-01-2024 · S.O. 695 dated 11-02-2025 · S.O. 1815(E) dated 17-04-2025

A word of counsel

The single most common error on this tariff line is assuming that a CM/L licence issued for shell-and-tube or plate heat exchangers under IS 11329:2018 extends automatically to spiral-type configurations. IS 11329:2018 covers multiple heat-exchanger geometries, but the CM/L licence scope is geometry-specific; a supplier licensed for shell-and-tube duty is not licensed for spiral units, and customs will detain a consignment where the declared product type falls outside the licensed scope on the BIS register.

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Frequently asked

Does HSN 8419 50 13 require BIS certification?

Yes. Conformity to IS 11329:2018 is mandatory under the ISI Mark Scheme with effect from 01 October 2023; import is permitted only from manufacturers holding a current BIS CM/L licence covering spiral-type heat exchange units at the licensed facility.

Are there exemptions from the BIS QCO for this HSN?

Yes. Paragraph 2 of the QCO 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 the current exemption categories; importers must verify the version in force on the date of importation.

Does IS 11329:2018 cover all heat-exchanger types under the same CM/L licence?

No. IS 11329:2018 covers multiple configurations including shell-and-tube, plate, spiral, and brazed-plate designs, but each CM/L licence is scope-specific; a licence issued for one geometry does not authorise import of another geometry.

Is the CM/L licence facility-specific?

Yes. The CM/L licence is tied to the licensed manufacturing facility; units produced at a different plant, even by the same manufacturer, are not covered under the same CM/L number and would trigger detention on a facility-address mismatch at customs.

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