The post bụ tumadi ịgbaso AASHTO M180, GB-T 31439.1-2015 na EN1317 ọkọlọtọ.
Ihe maka nke ahụ bụ tumadi Q235B (S235Jr ike mkpụrụ bụ karịa 235Mpa) na Q345B (S355Jr ike mkpụrụ bụ karịa 345Mpa).
N'ihi na ọkpụrụkpụ nke guardrail tumadi site 4.0mm ka 7.0mm ma ọ bụ soro ndị ahịa ina.
The elu ọgwụgwọ na-ekpo ọkụ tinye galvanized, na-eso AASHTO M232 na hà ọkọlọtọ dị ka AASHTO M111, EN1461 wdg.
A na-etinye nzi ozi n'ime ogige ahụ, iji kwado ma kwado okporo ụzọ nche.Ọ nwere ike belata mmetụta mmetụta mgbe ihe mberede ahụ riri.