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| 1.Nodular cast iron roll for bar rolling mill | |||||||||
| Rod surface hardness | HSD70-90 | ||||||||
| Core department hardness | HSD35-55 | ||||||||
| Core department tensile strength | >500Mpa | ||||||||
| Nodular cast iron rolls are mainly used in the billet and roughing stand of hot rolling mills,sections mills, tube mills, bar mills and wire mills. | |||||||||
| 2.Pearlitics Nodular cast iron bar mill roll | |||||||||
| Type | C | Si | Mn | P | S | Ni | Cr | Mo | |
| SGP I | 2.90~3.60 | 1.40~2.20 | 0.40~1.00 | ≤0.15 | ≤0.03 | 1.50~2.00 | 0.10~0.60 | 0.20~0.80 | |
| SGP II | 2.90~3.60 | 1.20~2.00 | 0.40~1.00 | ≤0.15 | ≤0.03 | 2.01~2.50 | 0.20~1.00 | 0.20~0.80 | |
| SGP III | 2.90~3.60 | 1.00~2.00 | 0.40~1.00 | ≤0.15 | ≤0.03 | 2.51~3.00 | 0.20~1.00 | 0.20~0.80 | |
| SGP I | 60~70 | 35~55 | >450 | ||||||
| SGP II | 55~65 | 35~55 | >450 | ||||||
| SGP III | 62~72 | 35~55 | >450 | ||||||
| 3.Bainitic acicular nodular cast iron bar mill roll | |||||||||
| Brand | C | Si | Mn | Cr | Ni | Mo | |||
| SGA 1 | 3.00~3.50 | 1.40~2.40 | 0.20~0.80 | ≤0.50 | 2.50~3.50 | 0.40~1.00 | |||
| SGA 2 | 3.00~3.50 | 1.20~2.00 | 0.20~0.80 | 0.20~1.00 | 3.00~4.50 | 0.40~1.00 | |||
| Brand | Barrel hardness | Tensile Strenghth | Bending Strength | Application:small profiled bar, stick, | |||||
| SGA 1 | 55~70HS | ≥400Mpa | 600~800 | narrow steel finishing mill frame, high | |||||
| SGA 2 | 62~80HS | ≥400Mpa | 600~800 | speed wire prefinishing rolling | |||||
| 4.Indefinite chilled cast iron bar mill roll | |||||||||
| Grade | Hardness | C | Si | Mn | Ni | Cr | Mo | ||
| I | 60~70HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 0.5~1.0 | 0.5~1.0 | 0.2~0.6 | ||
| II | 62~72HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 1.0~2.0 | 0.5~1.0 | 0.2~0.6 | ||
| III | 65~75HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 2.0~3.0 | 0.7~1.2 | 0.2~0.6 | ||
| IV | 70~85HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 3.0~5.0 | 1.0~2.0 | 0.2~0.6 | ||
| Hardness of shell | HSD60-85 | ||||||||
| Hardness of neck | HSD35-48 | ||||||||
| Tensile strength of core | ≥450Mpa | ||||||||
| For the finishing stands of continuous rolling mill of strip and bar, the prefinishing stands of high speed | |||||||||
| wire, the internediate and the front of finishing stands of small section, also ultilized in thin plate and | |||||||||
| straightening roll. | |||||||||
Suppliers with verified business licenses
Audited Supplier 
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