SHW-A

SiO₂≥50

CaO≥45

Fe₂O₃≤0.25

Al₂O₃≤0.8

MgO≤0.8

S≤0.01

P≤0.01

L.O.I≤1.5

SHW-B

SiO₂≥50

CaO≥44

Fe₂O₃≤0.25

Al₂O₃≤0.8

MgO≤0.8

S≤0.01

P≤0.01

L.O.I≤2

SHW-C

SiO₂≥49

CaO≥40

Fe₂O₃≤0.35

Al₂O₃≤0.8

MgO≤0.8

S≤0.01

P≤0.01

L.O.I≤3