A911/A911M
A911/A911M (Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties)· ASTM (米国) · 1 材料
| 名称 | 材料グループ | |
|---|---|---|
| A 911 | 構造・建築鋼 | chevron_right |
A911/A911M (Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties)· ASTM (米国) · 1 材料
| 名称 | 材料グループ | |
|---|---|---|
| A 911 | 構造・建築鋼 | chevron_right |