日本又骚又刺激的视频在线观看_羞羞视频在线观看免费_国产秀色在线www免费观看_欧美乱大交xxxxxbbb

Sakumaha kuat aluminium extruded?

Prosés ékstrusi aluminium

1, kakuatan ngadengdekkeun alloy aluminium ningali bahan paduan aluminium sareng kaayaan sepuh. Bahan sareng kaayaan sepuh henteu sami, kakuatanana henteu sami.

2. Paduan aluminium langka:

Aluminium tahan cai 5A50 kakuatan tarik: 265MPa; Kakuatan tarik 3A21: <167MPa;

Kakuatan tarik duralumin 2A11: 370MPa; Kakuatan tarik 2A12: 390 ~ 420MPa; Kakuatan tarik 2A13: 315 ~ 345MPa;

3. Kakuatan tarik aluminium murni industri: 80 ~ 100MPa;

4. Kakuatan condong nunjukkeun yén bagian luhur bagian tina anggota nyaéta daérah ékstrusi sareng bagian handapna nyaéta wilayah tarik nalika anggota ngagulung.


Waktos Post: Apr-03-2020
日本又骚又刺激的视频在线观看_羞羞视频在线观看免费_国产秀色在线www免费观看_欧美乱大交xxxxxbbb
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |