... ,ASTM,AISI,BS,SAE,ISO,TOCT,GB,ABNT6. Origin: China7. Loading port: Tianjin Port8. Grades:SAE/AISI: 3415, 4130, 4135, ... the aim.We are specialized in heat-resisting super alloy, anticorrosion alloy, precision alloy, flat steel, square steel, die steel, spring steel, ... carbon tool steel, stainless steel, alloy steel, high speed steel, carbon structural steel, hot-rolled bar ...