Oil & GasPumps
Multistage pump stage casing / diffuser (BB3 segmental ring)
API 610 BB3 type. Diffuser vane geometry critical for hydraulic performance. Stack assembly – all stage casings tolerance-stacked.
Specifications
Material
Cast Steel WCB; CF8M; WC6 (high temp service)
Grades
WCB;CF8M;WC6
Material Class
Cast Steel
Applicable Standards
API 610
Service Conditions
high temperature
Common Processes
Resin sand / investment (complex diffuser geometry with vanes)
NDT & Inspection
RT (critical wall sections); PT/MT; hydrostatic stage test; dimensional (bore concentricity stack); PMI
Typical Specs & Notes
API 610 BB3 type. Diffuser vane geometry critical for hydraulic performance. Stack assembly – all stage casings tolerance-stacked.
⚠ Caveats
Diffuser vane geometry critical for hydraulic performance.