Foundry Pig Iron:
Type: Z14/Z18/Z22/Z26/Z30/Z34

Spec:
Si:
>=1.25-1.6, >1.6-2.0, >2.0-2.4, >2.4-2.8, >2.8-3.2
>3.2-3.6
C: >=3.3

Mn:
A  <=0.5
B  >0.5-0.9
C  >0.9-1.3

P:
Grade1  <=0.06
Grade2  >0.06-0.1
Grade3  >0.1-0.2
Grade4  >0.2-0.4
Grade5  >0.4-0.9

S:
A  <=0.03
B  <=0.04
C  <=0.05