B50AH350 steel surface is smooth, flat and uniform thickness can be improved fill factor core, adhesion and weldability surface of the insulating film is good, and can improve the corrosion resistance punching

B50AH470 steel surface is smooth, flat and uniform thickness can be improved fill factor core, adhesion and weldability surface of the insulating film is good, and can improve the corrosion resistance punching

B20AT1500 mainly low-carbon steel, requires a good cold bending and welding properties, as well as some of the press performance.

B20AT1200 mainly low-carbon steel, requires a good cold bending and welding properties, as well as some of the press performance.

B35P135 mainly low-carbon steel, requires a good cold bending and welding properties, as well as some of the press performance.

B35P125 mainly low-carbon steel, requires a good cold bending and welding properties, as well as some of the press performance.