Oil & GasCompressor Casings (Sand / Steel Casting)
Centrifugal compressor casing (barrel type, horizontally split)
API 617 (centrifugal compressors). ASME VIII for PV components. NACE MR0175 for sour gas. ⚠ Impeller: FORGED not cast in API 617 service for rotating parts at speed.
Specifications
Material
Cast Steel ASTM A216 WCB; WC6 (Cr-Mo, high pressure / temperature); LCC (cold service); CF8M (corrosive gas)
Grades
WCB;WC6;LCC;CF8M
Material Class
Cr-MoCast Steel
Applicable Standards
NACE MR0175ASTM A216API 617
Service Conditions
corrosion
Common Processes
Resin sand / furan no-bake (complex split-barrel geometry); heat treat; PWHT (WC6)
NDT & Inspection
RT (100% pressure boundary, ASME E186/E280); UT; MT/PT; hydrostatic 1.5× rated; dimensional CMM (impeller bore, diaphragm fits); hardness; PMI
Typical Specs & Notes
API 617 (centrifugal compressors). ASME VIII for PV components. NACE MR0175 for sour gas. ⚠ Impeller: FORGED not cast in API 617 service for rotating parts at speed.
⚠ Caveats
NACE MR0175 for sour gas. ⚠ Impeller: FORGED not cast in API 617 service for rotating parts at speed.