1: Steel. According to the cross-sectional shape, it can be divided into round steel, flat steel, square steel, hexagonal steel, octagonal steel, angle steel, I-beam, channel steel, T-beam, B-beam, etc.

2: Steel plate! According to thickness, it can be divided into thick steel plate (thickness) and thin steel plate (thickness). According to the purpose, it can be divided into general steel plate, boiler steel plate, shipbuilding steel plate, automobile thick steel plate, general thin steel plate, roof thin steel plate, pickled thin steel plate, galvanized thin steel plate, tinned thin steel plate and other special steel plates.

3: Based on delivery status, steel strips can be divided into hot-rolled steel strips and cold-rolled steel strips.

4: Steel pipe! According to the manufacturing method, it can be divided into seamless steel pipe (hot-rolled and cold-drawn) and welded steel pipe. According to the purpose, it can be divided into general steel pipe, water gas steel pipe, boiler steel pipe, petroleum steel pipe, ipe, and other special copper pipes. According to the surface condition, it can be divided into galvanized steel pipe and non-galvanized steel pipe. According to the pipe end structure, it can be divided into threaded steel pipe and non-threaded steel pipe.

Five: Steel wire! According to the processing method, it can be divided into cold-drawn steel wire and cold-rolled steel wire, etc.; according to the purpose, it can be divided into general steel wire, wrapping steel wire, overhead communication steel wire, welding steel wire, spring steel wire, piano steel wire and other special steel wire, etc.; according to the surface condition, it can be divided into polished steel wire, polished steel wire, pickled steel wire, smooth steel wire, black steel wire, galvanized steel wire and other metal steel wire, etc.

Six: Steel wire rope! According to the number of strands, it can be divided into single-strand steel rope, six-strand steel rand eighteen-strand steel rope, etc.; according to the inner core material, it can be divided into organic core steel rope and metal core steel rope, etc.; according to the surface condition, it can be divided into non-galvanized steel rope and galvanized steel rope.