Soil pipe

Cast iron soil pipes and hollow profiles

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

HSN 7303 00 20 (cast iron soil pipe) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 1536:2001, IS 3989:2009, and IS 15905:2011 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 and IS 1537:1976 apply additionally 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 20

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
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against the applicable Indian Standard for the specific pipe type: IS 1536:2001 (centrifugally cast pressure pipes), IS 3989:2009 (spigot and socket soil/waste/ventilating/rainwater pipes), IS 15905:2011 (hubless centrifugally cast pipes), IS 1729:2002 (drainage pipes), or IS 1537:1976 (vertically cast pressure pipes). Verify the CM/L number, licensed product scope, and manufacturing facility on the BIS online register 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
Confirm which standard applies to the specific product being imported before finalising the purchase order. IS 1729:2002 and IS 1537:1976 carry phased enforcement: small enterprises from 01-12-2024, micro enterprises from 01-03-2025; the earlier standards (IS 1536, IS 3989, IS 15905) are in full force from 12-01-2021.
S.O. 2287(E) dated 13-06-2024 · S.O. 116(E) dated 12-01-2021
3
Ensure every pipe bears the ISI mark and the supplier's CM/L number per Scheme-I of Schedule-II to the Bureau of Indian Standards (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, 2024
4
Register the consignment on the Steel Import Monitoring System portal not earlier than 60 days before the expected date of arrival. Fee ₹500, registration valid for 75 days. Apply and obtain the automatic SIMS registration number before the consignment arrives at the Indian port.
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 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; an absent, expired, or scope-mismatched CM/L triggers consignment detention regardless of SIMS status.
ITC HS policy condition 2 of Chapter 73 · BIS Act, 2016 · DGFT policy circular 38/2015-20 dated 19-01-2022

A word of counsel

The most common error on this tariff line is selecting a CM/L licence against only one of the five applicable Indian Standards without verifying whether the specific pipe construction — centrifugally cast spigot-and-socket, hubless, vertically cast, or drainage — maps to that standard's scope. A CM/L against IS 1536:2001 does not cover hubless pipes governed by IS 15905:2011, and a CM/L against IS 3989:2009 does not cover vertically cast pressure pipes under IS 1537:1976; a scope mismatch triggers detention and re-export at the importer's cost.

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Frequently asked

Does HSN 7303 00 20 require BIS certification?

Yes. Cast iron soil pipes under this tariff line require ISI Mark Scheme certification; the applicable standard depends on pipe construction — IS 1536:2001, IS 3989:2009, IS 15905:2011, IS 1729:2002, or IS 1537:1976 — and the supplier must hold a current CM/L licence against the relevant standard.

Is SIMS registration required separately from BIS QCO compliance?

Yes. Steel Import Monitoring System registration is a customs-clearance overlay administered by the Directorate General of Foreign Trade, independent of BIS QCO. Fee ₹500, valid 75 days; application may be made no earlier than 60 days before expected arrival.

Do the phased enforcement dates for IS 1729:2002 and IS 1537:1976 affect all enterprises equally?

No. Under S.O. 2287(E), full enforcement under the Cast Iron Products (Quality Control) Order, 2024 applies from 01-09-2024; small enterprises were granted a deferral to 01-12-2024, and micro enterprises to 01-03-2025. The earlier QCO standards (IS 1536, IS 3989, IS 15905) have been in force since 12-01-2021 with no phased carve-outs.

Does one CM/L licence cover all five Indian Standards applicable to this HSN?

No. A CM/L licence is standard-specific and scope-specific by pipe type, manufacturing facility, and size range; pipes governed by a different standard, or from a facility not listed on the CM/L, are not covered and will be detained at customs.

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