GB/T1231-2006 Specifications of High Strength Bolts with Large Hexagon Head, Large Hexagonal Nuts and Plain Washers for Steel Structures

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Uploading Date: 2021-02-26 15:24:28

This standard specifies the technical requirements, test methods, test rules, marking and packing of high strength bolts with large hexagon head, large hexagon nuts, washers and connect sets for steel structures.

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