DIN 17864
DIN 17864 (Titanium and titanium wrought alloys forgings (open-die forgings and drop forgings) - Technical specification)· DIN (德国) · 30 种材料
DIN 17864 (Titanium and titanium wrought alloys forgings (open-die forgings and drop forgings) - Technical specification)· DIN (德国) · 30 种材料