New York--e-Steel Corp. has launched the first Internet-based transactional steel portal (www.e-steel.com). Companies can buy and sell steel over the password-protected and encrypted site, which went live Monday. In addition to transactional features, the steel portal includes market news, forums and industry reports. Participating companies need to undergo a review process that includes a credit check before being allowed to use the site. e-Steel is among a handful of companies, including VerticalNet, Horsham, Pa., that are looking to tap the burgeoning b-to-b online transactional marketplace.