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HomeHSNChapter 73HSN 7303 00 10

Rain water pipe

Cast iron rainwater pipes and hollow profiles

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 1729 · SIMS OVERLAY

HSN 7303 00 10 (cast iron rainwater pipes) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 1729:2002 and IS 1537:1976 is mandatory under the ISI Mark Scheme with effect from 1 September 2024 under the Cast Iron Products (Quality Control) Order, 2024. Steel Import Monitoring System registration administered by the Directorate General of Foreign Trade applies as a separate customs-clearance overlay.

What this is
HSN code
7303 00 10
Chapter
73 · Articles of iron or steel
BIS QCO
Applicable · ISI Mark Scheme · CM/L required
Indian Standard
IS 1729 · 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 1729:2002 (cast iron drainage pipes, overground non-pressure, socket-and-spigot series) or IS 1537:1976 (vertically cast iron pressure pipes), as applicable to the product variant. Verify the CM/L number, licensed product scope, and manufacturing facility on the BIS online register before placing the purchase order.
    Cast Iron Products (Quality Control) Order, 2024 · S.O. 2287(E) dated 13-06-2024
  2. 2
    Ensure every pipe bears the ISI mark and the supplier's CM/L number under Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product itself; marking on packaging alone does not satisfy the requirement.
    Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Cast Iron Products (Quality Control) Order, 2024
  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 is valid for 75 days from issue; confirm validity extends to the date of arrival.
    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 automatic registration number on the bill of entry. Customs verifies the CM/L against the BIS register and the SIMS registration against the DGFT portal in real time; an absent, expired, or scope-mismatched entry on either 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 for packaging only, or an SEZ-to-DTA movement (with or without value addition), document the SIMS exemption basis before filing. Note that the BIS QCO obligation under IS 1729:2002 and IS 1537:1976 is not waived by any SIMS carve-out; ISI-marked product requirement continues to apply.
    DGFT policy circular 38/2015-20 dated 19-01-2022 · Cast Iron Products (Quality Control) Order, 2024
A word of counsel

The single most common error on this tariff line is presenting a CM/L licence for the wrong standard: the CCR under HSN 7303 00 10 references three families of cast iron pipe standards (IS 1729:2002 for overground non-pressure drainage; IS 1537:1976 for vertically cast pressure pipes; IS 1536, IS 3989, and IS 15905 for centrifugally cast spun iron pipes under the earlier S.O. 116(E) order). Presenting a CM/L against the centrifugally cast family will not satisfy the Cast Iron Products (Quality Control) Order, 2024 obligation on rainwater pipe; verify that the licence number maps to IS 1729:2002 or IS 1537:1976 and the licensed scope matches the specific pipe series in the consignment.

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Frequently asked
Does HSN 7303 00 10 require BIS certification?
Yes. Cast iron rainwater pipes must conform to IS 1729:2002 or IS 1537:1976 under the ISI Mark Scheme with effect from 1 September 2024; import is permitted only from manufacturers holding a current BIS CM/L licence covering the relevant pipe type 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. The fee is ₹500, the registration is valid for 75 days, and applications open no earlier than 60 days before arrival.
Do the staggered enforcement dates for small and micro enterprises affect import obligations?
Yes, for foreign manufacturers that qualify. The obligation under S.O. 2287(E) took effect on 01-09-2024 for most enterprises, 01-12-2024 for small enterprises, and 01-03-2025 for micro enterprises; confirm the manufacturer's enterprise classification before relying on a staggered date.
Does one CM/L licence cover both IS 1729:2002 and IS 1537:1976 pipe variants?
No. A CM/L licence is standard-specific and scope-specific by pipe series, size range, and manufacturing facility; pipes outside the licensed standard 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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