Polski Komitet Normalizacyjny.<br />PN-H-92210-2<br />PN-H-92210-2:1996<br />Unalloyed and low alloyed steels for determined purpose - Universal plates and heavy plates for round blanks
Polski Komitet Normalizacyjny.<br />PN-H-92210-1<br />PN-H-92210-1:1996<br />Unalloyed and low alloyed steels for determined purpose - Slabs for lad plates