- Welded flange
- 2016-10-24 11:00
- Flange as a jointer, is widely used for wellhead assembly, Xmas tree and other well-control equipments.Structure model i
- Split dual casing head valve
- 2016-10-22 23:02
- Casing hanger for casing head and casing spool has straight type seat bore and 45cone of hanging shoulder with fine load