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As to the GB-01,GB-02,GB-03. We have the series of weights and sizes as follows. The are fully made of cast iron.
| ART NO. | VALVE KIND | G.W.(KGS) | N.W.(KGS) | MEAST.(CM)/CTNS | QTY/CTN | QTY/20FCL |
| GB-01 BIG | BRASS/ZINC ALLOY | 3.73 | 2.73 | 29.5X27.7X6.5 | 1 | 5600 |
| GB-02 BIG | BRASS/ZINC ALLOY | 6.5 | 5.00 | 53.5X29.5X6.5 | 1 | 3000 |
| GB-03 BIG | BRASS/ZINC ALLOY | 9.35 | 7.35 | 77.5X29.5X6.5 | 1 | 1950 |
| GB-01 SMALL | BRASS/ZINC ALLOY | 2.4 | 2.0 | 26X24X5.7 | 1 | 8200 |
| GB-02 SMALL | BRASS/ZINC ALLOY | 4.2 | 3.6 | 47X26.2X5.7 | 1 | 4200 |
| GB-03 SMALL | BRASS/ZINC ALLOY | 6.0 | 5.0 | 70.5X26.5X5.7 | 1 | 2800 |







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