What are the common classification of highway corrugated guardrails
Corrugated guardrails are an important part of highway safety facilities, and their classification is divided according to the difference in protection performance and durability. According to the relevant national standards and specifications, corrugated guardrails can be divided into the following grades:
1. Class B corrugated guardrail.
Class B corrugated guardrail is the most common grade, and its collision resistance and durability are relatively good, which can meet the safety protection needs of general highway sections. The structure of the B-class corrugated guardrail is generally made of steel, and the height is 1It is about 1 meter, and the spacing between the columns is about 2 meters. The surface treatment of Class B corrugated guardrail is generally galvanized or sprayed, with bright colors and good corrosion resistance, which can maintain its beauty and safety performance for a long time.
2. Class A corrugated guardrail.
Compared with Class B corrugated guardrails, Class A corrugated guardrails have better crash resistance and durability. Class A corrugated guardrails are generally made of thicker steel and can reach a height of 1The spacing between the columns can be reduced to about 1 meter at about 6 meters. The surface treatment of Class A corrugated guardrail is generally treated by hot-dip galvanizing or post-galvanizing spraying, which has stronger corrosion resistance and wear resistance. Class A corrugated guardrail is mainly used for highways, first-class highways and other sections with high safety protection requirements.
3. Class SA corrugated guardrail.
Class SA corrugated guardrails are the highest grade, and their crash resistance and durability are much higher than those of Class B and Class A corrugated guardrails. SA class corrugated guardrails are generally made of high-strength steel, and the height can reach 1Around 9 meters, the spacing between the columns can be reduced to 0About 8 meters. The surface treatment of SA grade corrugated guardrail is generally treated with hot-dip galvanized and then sprayed plastic, which has strong corrosion resistance and wear resistance. SA corrugated guardrails are mainly used for highways, urban expressways and other sections with extremely high safety protection requirements, and are also suitable for areas with fast vehicle speed.
The above is the common classification of highway corrugated guardrails, different grades of corrugated guardrails have different anti-collision performance and durability performance, which are suitable for different road sections and vehicle driving speeds. When selecting corrugated guardrails, it is necessary to evaluate and select them according to the actual situation to ensure the effectiveness and reliability of road safety facilities.