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<!--REG30PARAB V1.0 (01-06-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Para_B_Of_Part_A_Of_Schedule_III/2026-04-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2026-04-30.xsd"/><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">513519</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-10-22</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_CapacityAddition"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">513519</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-10-22</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIIIAxis">in-capmkt:CapacityAdditionMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">PITTIENG</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">PITTI ENGINEERING LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">513519</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE450D01021</in-capmkt:ISIN><in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">Capacity addition/Product launch (Sub-para 3-Para B)</in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="I_CapacityAddition">Capacity addition</in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">New</in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting contextRef="MainI">true</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting><in-capmkt:DateOfBoardMeeting contextRef="MainI">2026-10-22</in-capmkt:DateOfBoardMeeting><in-capmkt:StartTimeOfTheMeeting contextRef="MainI">16:30:00</in-capmkt:StartTimeOfTheMeeting><in-capmkt:EndTimeOfTheMeeting contextRef="MainI">17:10:00</in-capmkt:EndTimeOfTheMeeting><in-capmkt:DateOfReport contextRef="MainI">2026-10-22</in-capmkt:DateOfReport><in-capmkt:ExistingCapacityOfProjectOrPlant contextRef="MainI">The current consolidated installed capacity for sheet metal (lamination) is 1,08,000 MT per annum and for machining hours is 8,13,600 with an approved expansion currently underway to enhance machining capacity to 10,80,000 machining hours by Q1 2029-30.</in-capmkt:ExistingCapacityOfProjectOrPlant><in-capmkt:ExistingCapacityUtilizationByProjectOrPlant contextRef="MainI">The current capacity utilisation stands at ~ 78% for sheet metal and ~ 85% for machining.</in-capmkt:ExistingCapacityUtilizationByProjectOrPlant><in-capmkt:ProposedCapacityAdditionInProjectOrPlant contextRef="MainI">Existing Capacity as on 30-Sep-2026 - Sheet Metal (MT per annum)  - 1,08,000  Machine Hours (Per annum) - 8,13,600. On-going Capacity addition to be completed by
 Q1 2029-30 - 10,80,000 Machine Hours (Per annum). Post Proposed Capacity -  Sheet Metal  - 1,60,000 (MT per annum)  Machine Hours  13,14,000 (Per annum)</in-capmkt:ProposedCapacityAdditionInProjectOrPlant><in-capmkt:PeriodWithinWhichCapacityIsToBeAdded contextRef="MainI">The project is proposed to be implemented in phases up to FY 2030-31.</in-capmkt:PeriodWithinWhichCapacityIsToBeAdded><in-capmkt:InvestmentRequiredForProposedCapacityAddition contextRef="MainI" unitRef="INR" decimals="0">4500000000</in-capmkt:InvestmentRequiredForProposedCapacityAddition><in-capmkt:ModeOfFinancingForCapacityAddition contextRef="MainI">Combination of Internal Accruals &amp; Debts</in-capmkt:ModeOfFinancingForCapacityAddition><in-capmkt:RationaleForCapacityAddition contextRef="MainI">The Company is witnessing sustained growth in demand across key sectors, including mining and off-highway vehicles, power generation (including thermal, hydro, pumped storage and wind energy), data centres, railways and metro infrastructure. In order to support the anticipated growth in business volumes, strengthen its manufacturing capabilities and enhance value addition, the Company proposes to undertake capacity expansion and consolidate its presently fragmented lamination manufacturing operations in Karnataka into a single integrated manufacturing facility. The project is expected to increase capacities, improve operational efficiencies, optimise costs and support future growth.</in-capmkt:RationaleForCapacityAddition></xbrli:xbrl>
