IS 1879:2010
Cast iron threaded pipe fittings (elbows, tees, unions, bends, reducers)
BIS QCO · ISI MARK · 7 LINES · STEEL AND STEEL PRODUCTS QUALITY CONTROL ORDER, NOTIFIED VIDE S.O. 2287(E)
IS 1879 specifies the requirements for malleable cast iron threaded pipe fittings used for water, gas, steam and air service. The standard governs material grade, thread profile, pressure rating, dimensional tolerance and surface-finish criteria across the elbow, tee, union, bend and reducer ranges.
At a glance
7
Tariff lines covered (8-digit HSN)
Chapter 73
Primary HSN chapter
ISI
Mark scheme
Steel and Steel Products Quality Control Order, notified vide S.O. 2287(E)
Governing Quality Control Order
Tariff lines covered
Heading 7307
7307 19 00Cast iron threaded pipe fittings (elbows, tees, unions, bends, reducers)7307 21 00Stainless steel and alloy steel flanges for pipe fittings7307 22 00Threaded elbows, bends and sleeves of malleable cast iron7307 23 00Butt welding fittings of iron or steel (elbows, tees, reducers)7307 29 00Malleable cast iron threaded pipe fittings (elbows, tees, unions, bends, reducers)7307 91 90Non-galvanised steel pipe flanges (malleable cast iron fittings)7307 92 90Threaded elbows, bends and sleeves of iron or steel (other)
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Speak to an Expert Last verified against gazette notifications: 2026-05-16. Source: BIS / Indian Customs CUSDATA.
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