GB/T 852-1988 I-steel square inclined washer is a national standard washer, specially used for the connection and fixing of I-steel.
Mainly used in the power industry fasteners to ensure the stability and safety of the I-steel connection.
Material grade: Carbon steel Q235 is usually used, which is a common structural steel with good mechanical properties and weldability.
Surface treatment: The gasket is blackened by oxidation, which helps to improve its corrosion resistance and aesthetics.
Specification range: The common specifications are 8-20mm