GB/T 1228-1991
High strength bolts with large hexagon head for steel structures (English Version)

Standard No.

GB/T 1228-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

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

Status

Be replaced 2006-11

Replace By

GB/T 1228-2006

Latest

GB/T 1228-2006

Scope

This standard stipulates the type, size, 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 1228-1991 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