ovn
standard
astm, Aisi, Jis, DIN, GB, en
grade
C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910, C10920, C10930,
C11000, C11300, C11400, C11500, C11600, C12000, C12200, C12300, C12500, C14200, C1200 NC14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000...