Dur di-staenplât dur rholio oerac eitemau archwilio stribedi dur:
Cyfansoddiad cemegol, prawf tynnol, prawf plygu, caledwch, ymwrthedd cyrydiad, maint, siâp, ansawdd wyneb.
Dylai'r dull prawf cyfansoddiad cemegol o ddur gydymffurfio â GB/T 223.3, GB/T 223.4, GB/T 223.5, GB/T 223.8, GB/T 223.9, GB/T 223.11, GB/T 223.16, GB/T 223.18, GB/T 223.19, GB/T 223.23, GB/T 223.25, GB/T 223.26, GB/T 223.28, GB/T 223.33, GB/T 223.36, GB/T 223.40, GB/T 23/23, GB/T 223.28, GB/T GB/T 223.60, GB/T 223.61, GB/T 223.68, GB/T 223.69, GB/T 11170, GB/T 20123, GB/T 20124, ac ati.
