... SS400, A992Gr50, S235JRG2, S235JR, S275JR and s355jr steel angle1.equal angle, unequal angle2.Stabdard: GB/T 9787, GB/T9788, JIS, ... : 2#-20#4.Application: -various building structures, such as beams, bridges, transmisson towers, lifting or transporting machines, shipping, industrial ... kind which has two same uprightness borders is equal angle.- Unequal angle: The kind one border long and another short ...