IBR Form III-C
/glossary/ibr-form-iii-cIndian Boiler Regulations certificate mandatory for boiler-grade steel tubes installation.
In detail
Form III-C is the certificate of manufacture and test for boiler tubes issued under the Indian Boiler Regulations, 1950. It certifies that tubes were manufactured, tested, and inspected by an Inspecting Authority recognized by the Central Boilers Board. The certificate documents the manufacturer, heat number, grade, chemical composition, mechanical properties, and dimensional compliance. IBR Form III-C is mandatory for any tube installed in a boiler operating above the IBR pressure threshold in India.
Where you'll meet this in procurement
You will meet IBR Form III-C when a buyer, consultant, or mill quote names a governing specification. Confirm which revision applies, what tests the standard requires, and whether the grade on the MTC actually matches the IBR Form III-C call-out on the RFQ before you lock commercial terms.