Specification range: Heat treatment: BK, BKS, GBK, NBK, Stress Relief, Normalizing, Spheroidize ... , Smooth surface, Uniform mechanical property(Mechanical Properties equilibrium); 3) Heat treatment: BK, BKS, GBK, NBK, Stress Relief, Normalizing, Spheroidize ... etc; 4) Continuous stenciling as required; 5) Rust prevention treatment, such as: Immersion oil, lacquer, passivation, phosphating, etc; ...