300PLUS Mild Steel is the standard grade manufactured by OneSteel in Australia for hot rolled Structural Steel sections & Merchant Bar sections. 300PLUS Products include heavy & light structural steel (channels & beams, UBs), merchant bar products (rounds, squares, flats, rods, PFCs, TFBs, angles), and light billets (Square Bars).

Technical Specifications


 Size – MM 

S275JR 127mm x 76mm / 914mm x 419mm
S355JR 127mm x 76mm / 914mm x 419mm