TMS International, which provides outsourced industrial services to steel mills in North America, postponed its IPO on Friday because of poor market conditions. The Glassport, PA-based company was founded in 1926 and booked $2 billion in sales last year. BofA Merrill Lynch, Credit Suisse and J.P. Morgan were set to be the lead underwriters on the deal, which was the second deal to be pulled this week (after Global Market Group (GMC).