Specification model:

4*23*63 cross head quenching and hardening

4*30*80 cross quenching and hardening

5*25*69 cross head quenching and hardening

5*30*80 cross head quenching and hardening

5*27*56 short head side cross

6*30*80 cross head quenching and hardening

4 Cross head A3 material (23*60)

4 Cross head A3 material (30*80)

5 Cross head A3 material (23*60)

6 Cross head A3 material (28*69)