Q345 ni ubwoko bwibyuma biciriritse bikoreshwa cyane mubiraro, ibinyabiziga, amato, inyubako, ubwato bwumuvuduko, ibikoresho byihariye, nibindi, aho "Q" bivuga imbaraga zumusaruro, naho 345 bivuze ko umusaruro wibyuma ari 345MPa . Kugerageza ibyuma bya q345 ahanini birimo ...
Soma byinshi