IS 648:2006
Parts of transformers, stampings, laminations and cores
BIS QCO · ISI MARK · 2 LINES · STEEL AND STEEL PRODUCTS QUALITY CONTROL ORDER, NOTIFIED VIDE S.O. 3716(E) AND S.O. 492(E)
IS 648 specifies the requirements for cold-rolled non-oriented (CRNO) electrical steel sheet and strip used in the cores of distribution and power transformers, motors and ballasts. The standard governs magnetic loss, permeability, surface insulation and dimensional accuracy.
At a glance
2
Tariff lines covered (8-digit HSN)
Chapter 85
Primary HSN chapter
ISI
Mark scheme
Steel and Steel Products Quality Control Order, notified vide S.O. 3716(E) and S.O. 492(E)
Governing Quality Control Order
Tariff lines covered
Heading 8504
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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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