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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 6728-2017 |
Cold forming hollow sectional steel for general structure 结构用冷弯空心型钢 |
China National Standards Cold forming sectional |
 English PDF |
| GB/T 6726-2008 |
Cold forming sectional steel for vehicles - Dimensions, shape, weight and tolerances 汽车用冷弯型钢尺寸、外形、重量及允许偏差 |
China National Standards Cold forming sectional |
English PDF |
| GB/T 6723-2008 |
Cold forming sectional steel - Open sectional steel for general structure - Dimensions, shape, weight and permissible tolerances 通用冷弯开口型钢尺寸、外形、重量及允许偏差 |
China National Standards Cold forming sectional |
English PDF |
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