≧5 قطع الأسلاك النحاسية صنع المجوهرات النحاس ...
· bacme.edu.vnCreated Date: 3/14/2019 9:52:43 AMNovember 2009 Covered electrodes Typical analysis % (All weld metal) C Si Mn Cr Ni N 0.08 1.5 0.7 22.0 10.5 0.18 Ferrite 10 FN DeLong Standard designations – CharacteristicsCreated Date: 3/15/2019 2:46:05 ...