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结构用钢
| Q/BQB 420-2003 | Q/BQB 420-2001 | Q/BQB 422-2000 |
|---|---|---|
| S220GD+Z,S220GD+ZF | - | S220GD+Z,S220GD+ZF |
| S250GD+Z,S250GD+ZF | - | S250GD+Z,S250GD+ZF |
| S280GD+Z(StE280-2Z) |
StE280-2Z - |
S280GD+Z |
| S280GD+ZF | S280GD+ZF | |
| S320GD+Z,S320GD+ZF | - | S320GD+Z,S320GD+ZF |
| S350GD+Z(StE345-2Z) |
StE345-2Z - |
S350GD+Z |
| S350GD+ZF | S350GD+ZF | |
| S550GD+Z,S550GD+ZF | - | S550GD+Z,S550GD+ZF |
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