Technical Requirement:
1. Design and Manufacture: ASME B16.34
2. Face to Face: ASME B16.10
3. Flange End: ASME B16.5
4 Test: API 598
информация о продукте
Main parts and materials
| Parts Name | Materials |
| Body、Bonnet | ASTM A351 |
| Disc | ASTM A351 |
| Stem | ASTM A965 |
| Seat Ring | ASTM A351 |
