TMS International, which provides outsourced industrial services to steel mills in North America, filed on Thursday with the SEC to raise up to $150 million in an initial public offering. The Glassport, PA-based company, which was founded in 1926 and booked $1.3 billion in sales last year, plans to list on the NYSE under the symbol TMS. BofA Merrill Lynch, Credit Suisse and J.P. Morgan are the lead underwriters on the deal. No pricing terms were disclosed.