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HomeHSNChapter 73HSN 7307 23 00

Butt welding fittings

Butt welding fittings of iron or steel (elbows, tees, reducers)

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

HSN 7307 23 00 (butt welding fittings of iron or steel) 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, by virtue of 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 23 00
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. 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, fitting types covered, and licensed 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
  2. 2
    Ensure every fitting bears the ISI mark and the supplier's CM/L number in accordance with Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product itself and not on packaging alone.
    Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Cast Iron Products (Quality Control) Order, 2023
  3. 3
    Register the consignment on the Steel Import Monitoring System portal not earlier than 60 days before the expected arrival date. The registration fee is ₹500 and the automatic registration number remains valid for 75 days from issuance.
    DGFT Notification 33/2015-20 dated 28-09-2020 · DGFT Notification 28/2023 dated 28-08-2023
  4. 4
    Quote both the supplier's BIS CM/L number and the SIMS registration number on the bill of entry. Customs verifies the CM/L in real time against the BIS register and the SIMS registration against the DGFT portal; either being absent, expired, or scope-mismatched triggers consignment detention.
    ITC HS policy condition 2 of Chapter 73 · BIS Act, 2016 · Customs Act, 1962
  5. 5
    If the consignment is a re-import of steel for packaging purposes only, or an SEZ-to-DTA movement without value addition, document the SIMS exemption basis. Note that the BIS QCO obligation under IS 1879:2010 is not waived by either carve-out — the ISI-marked fitting requirement continues to apply.
    DGFT Policy Circular 38/2015-20 dated 19-01-2022
A word of counsel

The single most common error on this tariff line is overlooking the phased enterprise-size enforcement schedule embedded in the Cast Iron Products (Quality Control) Order, 2023: the BIS QCO applies from 1 September 2024 for large enterprises, from 1 December 2024 for small enterprises, and from 1 March 2025 for micro enterprises. Importers sourcing from a foreign supplier that qualifies as a micro enterprise under the Indian framework have misread the carve-out as applying to them as importers — it does not; the enterprise-size concession tracks the manufacturer's classification, not the importer's, and customs has detained consignments from small and micro manufacturers who began marking product before their applicable date using a CM/L issued ahead of schedule.

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Frequently asked
Does HSN 7307 23 00 require BIS certification?
Yes. Malleable cast iron pipe fittings under this tariff line require conformity to IS 1879:2010 under the ISI Mark Scheme; import is permitted only from manufacturers holding a current BIS CM/L licence covering the relevant fitting types and facility, with effect from 1 September 2024 for large enterprises.
Is SIMS registration required separately from BIS QCO compliance?
Yes. SIMS registration is administered by the Directorate General of Foreign Trade and is independent of the BIS QCO obligation. The fee is ₹500, registration is valid for 75 days, and applications may be submitted no earlier than 60 days before expected arrival.
Do the phased enforcement dates under the Cast Iron Products (Quality Control) Order, 2023 apply to the importer?
No. The phased dates — 1 September 2024 (large), 1 December 2024 (small), 1 March 2025 (micro) — track the manufacturing enterprise's size classification, not the importer's. An importer sourcing from a large manufacturer is subject to the 1 September 2024 date regardless of the importer's own enterprise size.
Does a single CM/L licence cover all butt welding fitting types and sizes from the same manufacturer?
No. The CM/L is scope-specific by fitting type (elbow, tee, union, reducer), size range, and licensed manufacturing facility; fittings outside the licensed scope or from an unlicensed plant are not covered and will be detained at port.
Last verified against gazette notifications: 2026-05-18. Source: BIS / SIMS / DGFT / Indian Customs CUSDATA.
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