BS700 Delivery status: BS series adopt high-strength steel-rolled (TMCP) delivery.

BS550 hot rolling carbon low-alloy high strength steel design by reducing the carbon equivalent of the steel and welding crack sensitivity index, and use of advanced smelting equipment

BS600MCK4 hot rolling carbon low-alloy high strength steel design by reducing the carbon equivalent of the steel and welding crack sensitivity index, and use of advanced smelting equipment and technology to strengthen the collection of micro-alloying