In Compliance of REG 74(5) of SEBI (DP) Regulation 2018. We forward the Certificate Received form our RTA M/s. Cameo Corporate Service Limited. for the QE 30.09.2026. Kindly take the same on record.

TAMILNADU STEEL TUBES LIMITED MFRS. & EXPORTERS OF : MS & GI, SQUARE & RECTANGLE STEEL PIPES PGGD. OFF : lst Floor, No.22, Wheat Croft Road, Nuagambakkam, Chennai - 600 034. PHONE : 044 2855 5653, Web : www.tntpipes.com CIN : L27ll0TNl979PLC007887 E-MAILipurchue@tntpipes.com/sales@trgipes.com/contact@btpipes.com/tnt.share@yahoo.in TNT/2026-2711+ Date: 12.10.2026 BSE Ltd. Dept. of Corporate Services PJ Towers, Floor 25 Dalal Street, MUMBAI - 400 001 Dear Sirs, Sub: Confirmation bertificate under Regulation 74(5) of SEBI (Depositories & Participants) Regulations,2018 - for the Q.E.30.09.2026 Ref: Scrip Code 513540 - ISIN No.INE l76E,0l0l2 TAMILNADU STEBL TUBES LTD. ****{. In compliance with Regulation 74 (5) of SEBI (Depositories & Participants) Regulations, 2018, we are forwarding above certificate received from M/s Cameo Corporate Services Ltd., Registrar & Share Transfer Agents of the company, for the Quarter ended 30.09.2026. This is for your information and record. Please take the same on record. Thanking You, Yours Faithfully, For T ILNADU S L TUBES LTD. K.S H CO NY SECRETARY _ CUM- COMPLIANCE OFFICER Encl: as above WORKS : PLOT 8.10, INDUSTRIAL COMPLEX, MAMIMALAI NAGAR, KANCI{EEPURAM DISTRICT, PIN - 603 209.