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Ihe nchekwa oghere atọ
Ihe nchekwa ahụ bụ isi ịgbaso ọkọlọtọ AASHTO M180, GB-T 31439.1-2015 na EN1317.
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Ihe Nchedo W-Beam
Ihe e ji mee nke ahụ bụ isi ihe Q235B (S235Jr ike mmepụta karịrị 235Mpa) na Q345B (S355Jr ike mmepụta karịrị 345Mpa).
