GB/T 1228-2006
High strength bolts with large hexagon head for steel structures (English Version)

Standard No.

GB/T 1228-2006

Language

Chinese, Available in English version

Release Date

2006

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 1228-2006

Replace

GB/T 1228-1991

Scope

This standard specifies the formal dimensions, technical conditions and marks of high-strength large hexagon head bolts with thread specifications of M12 ~ M30. This standard applies to railway and highway bridges, boiler steel structures, industrial plants, high-rise civil buildings, tower mast structures, hoisting machinery and other steel structures with friction-type high-strength bolt connections.

GB/T 1228-2006 Referenced Document

• GB/T 1231 Specifications of high strength bolts with large hexagon head ，large hexagon nuts，plain washers for steel structures
• GB/T 1237 Designation system for fasteners
• GB/T 2 Fasteners.Ends of parts with external thread*， 2016-02-24 Update
• GB/T 5276 Fasteners.Bolts, screws, studs and nuts.Symbols and descriptions of dimensions*， 2015-12-10 Update

GB/T 1228-2006 history

• 2006 GB/T 1228-2006 High strength bolts with large hexagon head for steel structures
• 1991 GB/T 1228-1991 High strength bolts with large hexagon head for steel structures