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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 1231-2006 |
Specifications of high strength bolts with large hexagon head,large hexagon nuts,plain washers for steel structures 钢结构用高强度大六角头螺栓、大六角螺母、垫圈技术条件 |
China National Standards Hexagon nuts high |
 English PDF |
| GB/T 1229-2006 |
High strength large hexagon nuts for steel structures 钢结构用高强度大六角螺母 |
China National Standards Hexagon nuts high |
English PDF |
| GB/T 18230.3-2000 |
Hexagon nuts for high-strength structural bolting with large width across flats--Product grade B--Property classes8 and 10 栓接结构用大六角螺母 B级 8和10级 |
China National Standards Hexagon nuts high |
English PDF |
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