In addition to being used as a lifting chain for lifting and binding, chains can also play a protective role, that is, guardrail chains. Guardrail chains are not uncommon in our lives. They are commonly found on wooden piles by the river, between stone piers, or on both sides of mountain roads. The main role of guardrail chains is to prevent pedestrians from being dangerous and to stop and support them.
Guardrail chain
If you have carefully observed the guardrail chains, you will find that most of the guardrail chains are galvanized chains. What is the main reason for the use of galvanized chains in guardrail chains?
Because the galvanized chain has a good ability to isolate the air, it can block the humid air of the outdoor river, thus achieving the function of anti-corrosion and rust prevention.
Manganese steel chain has the characteristics of high strength. It is obvious that the guardrail chain is not used for lifting, so the high strength characteristics of manganese steel chain cannot be brought into play. It is a little overqualified and meaningless to use it for guardrail chain.
The explosion-proof copper alloy chain is mainly characterized by explosion-proof. It is used in flammable and explosive places, and it is also meaningless to use it in guardrail chains.
Stainless steel chains also have strong rust resistance, which is even better than galvanized chains. It's OK at last. It's really feasible to use stainless steel for guardrail chains, but the cost of stainless steel chains is much higher. In this environment, stainless steel chains are too luxurious, so they are not suitable.
Therefore, to sum up, it is more cost-effective and appropriate to use galvanized chains as guardrail chains.
