Brand Q195, low carbon content, low strength, good plasticity, toughness, processability and welding performance. Used for rolling sheet and wire rod. Cold and hot rolled steel sheets and galvanized, tinned and plastic composite steel sheets made from them are widely used in roof panels, decorative plates, general dust removal pipes, packaging containers, iron drums, instrument shells, switch boxes, protective covers, train carriages, etc. Wire rods are mostly cold drawn into low-carbon steel wires or galvanized into galvanized low-carbon steel wires, which are used for binding, tensioning and fixing, or as steel wire mesh, rivets, etc.

Grade q295 steel, which contains only a small amount of alloy elements, has low strength, but has good plasticity, cold bending, welding and corrosion resistance. It is mainly used for building structures, industrial plants, low-pressure boilers, low and medium pressure chemical containers, oil tanks, pipelines, cranes, tractors, vehicles and general engineering structures with low strength requirements.

25 steel is used as mechanical parts of hot forging and hot stamping, cyanide parts on metal cutting machine tools, and shafts, rollers, connectors, washers, bolts, nuts, etc. with small load in heavy and medium-sized machinery manufacturing. It can also be used as steel castings.

Alloy structural steel, abbreviated as bonded steel, is a kind of steel made by appropriately adding one or more alloy elements (total amount < 5%) on the basis of high-quality carbon structural steel.

Free cutting structural steel is referred to as free cutting steel, which contains a small amount of free cutting elements and has good machinability. Free cutting structural steel is referred to as free cutting steel, which contains a small amount of free cutting elements and has good machinability