Expansion screws, Yichen fasteners

规格：

12*150

产地：

邯郸

用途：

幕墙固定

Commonly used materials for bolt materials
H-number steel
For important or special-purpose threaded connections,
and other alloy steels with higher mechanical properties
can be used. Allowable stress The allowable stress of a threaded connection is related to factors such as the nature of the load, whether the statically variable load connection is tightened, whether the pretightening force needs to be controlled, and the material structure size of the threaded connection.
Carbon steel
The grade of bolts is divided into several grades. The numbers before and after the decimal point indicate the nominal tensile strength
and yield ratio of the bolt material respectively
For example, marked bolts indicate the material's The tensile strength reaches, and the yield strength ratio reaches the yield strength of
Stainless steel
The grades of stainless steel bolts are divided into. The materials are mainly divided into austenite, martensite and ferrite. The expression method is, for example, front and back respectively. Indicates bolt material and strength grade.