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Non-galvanised steel pipe flanges (malleable cast iron fittings)

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 1879 · SIMS OVERLAY

HSN 7307 91 90 (non-galvanised steel pipe flanges) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 1879:2010 is mandatory under the ISI Mark Scheme with effect from 1 September 2024, pursuant to the Cast Iron Products (Quality Control) Order, 2023. Steel Import Monitoring System (SIMS) registration administered by the Directorate General of Foreign Trade applies as a separate customs-clearance overlay.

What this is

HSN code

7307 91 90

Chapter

73 · Articles of iron or steel

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 1879:2010 · effective 01-09-2024

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

SIMSSIMS·Steel Import Monitoring System

Procedural directions for customs clearance are issued by: Directorate General of Foreign Trade.

Compliance steps

1
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 1879:2010 for malleable cast iron pipe fittings. Verify the supplier's CM/L number, licensed product scope, and manufacturing facility address on the BIS online register before placing the purchase order.
Cast Iron Products (Quality Control) Order, 2023 · S.O. 2287(E) dated 13-06-2024 · IS 1879:2010
2
Ensure every fitting bears the ISI mark and the supplier's CM/L number under licence per Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. The marking must appear on the product itself, not on packaging alone.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Cast Iron Products (Quality Control) Order, 2023
3
Register the consignment on the Steel Import Monitoring System portal no earlier than 60 days before the expected arrival date. Fee ₹500, registration valid for 75 days from issue; the registration must remain within validity on the date of arrival.
DGFT Notification 33/2015-20 dated 28-09-2020 · DGFT Notification 28/2023 dated 28-08-2023
4
If the enterprise qualifies as a small enterprise, the QCO enforcement date is 1 December 2024; for micro enterprises it is 1 March 2025. Retain documentary evidence of MSME classification at the time of import to support any staggered-entry claim at customs.
Cast Iron Products (Quality Control) Order, 2023 · S.O. 2287(E) dated 13-06-2024
5
Verify whether the consignment's bill of lading shipped-on-board date is on or before 31 March 2026 and whether the ITC HS code appears in Annexure I of the MoS Order F.No. S-20011/15/2024-TECH-PART(2) dated 20-11-2025. Consignments within that carve-out are temporarily exempted from mandatory QCO compliance; retain the order and the bill of lading as documentary evidence at customs.
MoS Order F.No. S-20011/15/2024-TECH-PART(2) dated 20-11-2025

A word of counsel

The single most common error on this tariff line is applying the IS 6392:2020 flanges regime — which governs the sibling galvanised entry at 7307 91 10 — to non-galvanised flanges at 7307 91 90, while missing IS 1879:2010 entirely. The two tariff lines carry different IS standards and different enforcement dates; a supplier CM/L licence issued against IS 6392:2020 provides no cover for a consignment declared under 7307 91 90, and customs will detain the goods pending fresh BIS verification. Confirm the specific IS number on the supplier's CM/L certificate matches IS 1879:2010 before shipment.

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Frequently asked

Does HSN 7307 91 90 require BIS certification?

Yes. Conformity to IS 1879:2010 is mandatory under the ISI Mark Scheme pursuant to the Cast Iron Products (Quality Control) Order, 2023; import is permitted only from manufacturers holding a current BIS CM/L licence covering the relevant fitting types and manufacturing facility.

Is SIMS registration required separately from BIS QCO compliance?

Yes. Steel Import Monitoring System registration is administered by the Directorate General of Foreign Trade and is independent of the BIS QCO obligation. Fee ₹500, validity 75 days, apply no earlier than 60 days before expected arrival.

Do the staggered enforcement dates affect all importers equally?

No. The general enforcement date is 1 September 2024; small enterprises gained until 1 December 2024 and micro enterprises until 1 March 2025. The enterprise classification at the time of import determines which date applies.

Does a single CM/L licence cover all malleable cast iron fitting types and sizes from the same manufacturer?

No. The CM/L is scope-specific by fitting type, size range, and manufacturing facility; fittings outside the licensed scope or from an unlicensed plant are not covered and will trigger detention at customs.

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