highway guardrail bolts

highway guardrail bolts selection

highway guardrail bolts mainly plays a connecting role, connecting guardrail and post, spacer, etc. Today, we will introduce the selection and installation of highway guardrail bolts.

highway guardrail bolts control and selection of chemical composition. It is necessary to strictly control the chemical composition of bolts according to the requirements of cold heading steel and select good materials, which can improve the plasticity of plastic steel, ensure the stability of steel materials, and reduce the hazards of inclusions on steel, and also reduce the harmful elements in steel.

By controlling rolling and scouring, the reduction of reduction, the uniformity of rolled steel, the refinement of the grain structure, the avoidance of folding in production and the improvement of the comprehensive properties of cold heading steel are achieved.

highway guardrail bolts should choose proper hole-making system with uniform deformation to ensure the surface cleanliness, reduce the cracks of finished products, improve the quality of production, and ensure the process requirements very well.

highway guardrail bolts are strictly controlled to prevent burning and surface decarbonization. In order to avoid the phenomenon of bolt biting, the strength of the screw material used should be lower than that of the bolt material. Not only that, but also when choosing and purchasing, it is better to choose the screw produced by the regular manufacturer, so as to better guarantee the quality and use it more comfortably.

w beam guardrail

highway guardrail bolts installation

highway guardrail bolts should be installed according to the size of fastener to select the appropriate bolt. In principle, bolts matching equipment requirements are selected. The length of the bolt should be three to four threads of the exposed nut after tightening.

When highway guardrail bolts are fastened, they should be symmetrically and evenly tightened. When tightening the highway guardrail bolts, the force should be moderate according to the size of the bolt, and the bolt should not be damaged or broken due to excessive tightening.

The clearance between flanges should be the same when connecting flanges. The highway guardrail bolts on the stirring blade should be tightened to prevent loosening and loosening by spot welding.

Bolts of large equipment and key parts must be tightened twice within 4 to 8 hours of driving.

Application of highway guardrail

When installing highway guardrail bolts,we should pay attention to the surrounding environment and do a good job of safety protection. When working at high altitude, fasten your seat belt to prevent tools from falling from high altitude.