Tech Mahindra will be offering 1.27 crore shares of Rs 10 each in its initial public offering (IPO) through the book building process.The company has fixed the price band of Rs 315-365. The offer opens on August 1, 2006 and will close on on August 4, 2006.Kotak Mahindra Capital and ABN Amro Securities India are the lead managers for the IPO.The company plans to issue the proceeds from the IPO for expansion of its current facilities.