Umuyoboro udafite ibyuma byubatswe GB / t8162-2018 bikoreshwa cyane muburyo rusange no gutunganya. Ibikoresho bihagarariye (ikirango): ibyuma bya karubone 20 #, 45 ibyuma; Amavuta avanze Q345, 20Cr, 40Cr, 20CrMo, 30-35crmo, 42CrMo, nibindi.
Soma byinshi