| Place of Origin | Jiangsu, China |
| Brand Name | jszy |
| Material | Steel |
It is used for setting bridge chair, and distributing evenly the load to groundwork. The letter 1, 2 & 3 marked on the bed plate represent respectively the bridge chair center-line positions of single-row, dual-row and triple-row. On the other side of the bed plate is marked the center-line position of span bridge direction.
Steel structure
Light steel structure
Steel structure
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