ʻO ka hopena terminal e hahai nui i ke kūlana AASHTO M180, GB-T 31439.1-2015 a me EN1317.
ʻO nā mea hana no ia mea, ʻo ia ka Q235B (ʻoi aku ka ikaika o ka S235Jr ma mua o 235Mpa) a me Q345B (ʻoi aku ka ikaika o ka S355Jr ma mua o 345Mpa).
No ka mānoanoa o ka hopena terminal ma o ka 2.5mm a i ka 4.0mm a i ʻole e hahai i ke koi a nā mea kūʻai aku.
ʻO ka mālama ʻana o ka ʻili he galvanized i hoʻoluʻu ʻia i ka wela, e hahai i ka AASHTO M232 a me ke kūlana like e like me AASHTO M111, EN1461 etc.
Ua hoʻopaʻa ʻia ka hopena hope ma ka hoʻomaka a me ka hopena o ke alanui. Hiki iā ia ke pale i nā kānaka me ka papa kila kūlou, e hoʻohaʻahaʻa i ka ʻeha mai ka pale kaua.