... .30/1.750.80/1.20Specialty Harden and air cooling steel, 600`C work, high rigidity, high endurance, anti-heating, anti ... -cracking, electric sediment and middle-melting steel, compact structure, refined in electric cooker, quality of steel is pure, owned good character of ... -850`C,slow cooling after diathermiaDimension(mm)Round: ?0-?00 Flat :20-80*40-800 80-300*500-800The state of ...