In the process of lifting the transmission tower, the step bolt or bolt is used as the safety measure.
Step integral loop operator hooks into safety precautions.
Provide ASTM A563-DH heavy hex nut.
It is forged with alloy.
The surface is hot dip galvanizing treatment A153,
Can meet the ASTM standard.
The material conforms to C1045 and Q345 steel and needs to be tested with a low temperature summer ratio.