Other

Cast iron tubes, pipes and hollow profiles (centrifugally cast, drainage)

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 1536 · SIMS OVERLAY

HSN 7303 00 90 (cast iron tubes, pipes and hollow profiles) is covered by Bureau of Indian Standards Quality Control Orders under two separate notifications. Conformity to IS 1536, IS 3989, and IS 15905 is mandatory under the ISI Mark Scheme with effect from 12 January 2021 under the Centrifugally Cast (Spun) Iron Pipes (Quality Control) Order, 2021; IS 1729:2002 applies additionally for drainage pipes with effect from 01 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 90

Chapter

73 · Articles of iron or steel

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 1536 · effective 12-01-2021

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
Identify the product type precisely before sourcing: centrifugally cast pressure pipes (water, gas, sewage) require CM/L against IS 1536:2001; spigot-and-socket soil/waste/ventilating/rainwater pipes require IS 3989:2009; hubless spigot-series pipes require IS 15905:2011; drainage pipes for overground non-pressure pipelines require IS 1729:2002. Verify the supplier's CM/L on the BIS online register for the exact standard before placing the purchase order.
Centrifugally Cast (Spun) Iron Pipes (Quality Control) Order, 2021 · S.O. 116(E) dated 12-01-2021 · Cast Iron Products (Quality Control) Order, 2024 · S.O. 2287(E) dated 13-06-2024
2
Ensure every pipe and hollow profile bears the ISI mark and the supplier's CM/L number per Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product itself; marking only on packaging does not satisfy the statutory requirement.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · S.O. 116(E) dated 12-01-2021
3
Note the phased enforcement dates for IS 1729:2002: small enterprises were required to comply from 01 December 2024 and micro enterprises from 01 March 2025. Verify that your supplier's enterprise category aligns with the applicable enforcement date before shipment.
Cast Iron Products (Quality Control) Order, 2024 · S.O. 2287(E) dated 13-06-2024
4
Register the consignment on the Steel Import Monitoring System portal not earlier than 60 days before the expected arrival date. Fee ₹500, registration valid for 75 days from issue; the SIMS 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
5
Quote the supplier's BIS CM/L number (covering the applicable IS standard) and the SIMS automatic registration number on the bill of entry. Customs verifies both in real time; an absent, expired, or scope-mismatched CM/L or SIMS registration triggers consignment detention. SIMS registration is not required for re-imports purely for packaging or for SEZ-DTA movements without value addition.
ITC HS policy condition 2 of Chapter 73 · DGFT policy circular 38/2015-20 dated 19-01-2022 · BIS Act, 2016 · Customs Act, 1962

A word of counsel

The most frequent compliance failure on this tariff line is treating the four applicable Indian Standards as interchangeable — sourcing a CM/L against IS 3989:2009 and shipping centrifugally cast pressure pipes that require IS 1536:2001, or vice versa. Each standard maps to a distinct pipe type (pressure versus soil/waste/ventilating versus hubless versus overground drainage), and a CM/L against the wrong standard leaves the consignment non-compliant for customs purposes, triggering detention regardless of whether the physical pipe is otherwise fit for purpose. Confirm the product-type-to-IS mapping with the supplier in writing before the purchase order, not at the port.

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Frequently asked

Does HSN 7303 00 90 require BIS certification?

Yes. Cast iron pipes under this tariff line require a BIS CM/L licence under the ISI Mark Scheme. IS 1536, IS 3989, and IS 15905 apply from 12 January 2021; IS 1729:2002 applies for drainage pipes from 01 September 2024 for general importers.

Is Steel Import Monitoring System 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. Fee ₹500, validity 75 days; apply no earlier than 60 days before the expected arrival date.

Do the phased IS 1729:2002 dates affect whether my consignment can clear customs today?

Yes. The general enforcement date is 01 September 2024; small enterprises had until 01 December 2024 and micro enterprises until 01 March 2025. A supplier whose enterprise category had not yet reached its applicable date during a transitional window is not required to hold a CM/L for that period, but documentary evidence of the enterprise classification must accompany the shipment.

Does a single CM/L licence cover all four Indian Standards applicable to this HSN?

No. Each CM/L is product-scope-specific and IS-specific; a licence against IS 3989:2009 does not authorise the ISI mark on pipes that must conform to IS 1536:2001, IS 15905:2011, or IS 1729:2002. Each standard requires a separate licence covering the specific pipe type and manufacturing facility.

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