Cov qauv siv
1: GB 228 Hlau tensile xeem txoj kev
2: GB / T 3620.1 Titanium thiab titanium alloy qib thiab tshuaj muaj pes tsawg leeg
round pas nrig titanium
3: GB / T3620.2 Tshuaj muaj pes tsawg leeg thiab muaj pes tsawg leeg kam rau ua ntawm titanium thiab titanium alloy ua cov khoom
4: GB 4698 Titanium daim txhuam cev, tshuaj ntsuam xyuas txoj kev ntawm titanium thiab titanium alloys
titanium round qws Tshuag
