Oil & GasValves
Gate valve body & bonnet – Class 150/300 (pipeline, wellhead utility)
API 600 (steel gate valves). ASME B16.34. NACE MR0175 / ISO 15156 for sour service (H₂S). Note: Class 600 and above gate valve bodies are TYPICALLY FORGED not cast – verify PO/drawing. EN 10204 3.2 MTC mandatory.
Specifications
Material
Carbon Steel ASTM A216 WCB (Class 150/300); LCC (low temp); WC6/WC9 (Cr-Mo, high temp); CF8M / CF3M SS (sour/corrosive); CA15 (13Cr, moderate sour)
Grades
WCB;LCC;WC6;WC9;CF8M;CF3M;CA15
Material Class
Carbon SteelCr-Mo
Applicable Standards
NACE MR0175EN 10204ASTM A216ASME B16.34API 600ISO 15156
Service Conditions
corrosionsour servicehigh temperaturelow temperature
Common Processes
Resin sand / furan no-bake (complex bonnet geometry); heat treat (N&T for Cr-Mo); PWHT
NDT & Inspection
RT (ASME B16.34 / MSS SP-55 acceptance); MT (carbon steel); PT (SS / Cr-Mo); hydrostatic body & seat (API 598); dimensional; hardness; PMI
Typical Specs & Notes
API 600 (steel gate valves). ASME B16.34. NACE MR0175 / ISO 15156 for sour service (H₂S). Note: Class 600 and above gate valve bodies are TYPICALLY FORGED not cast – verify PO/drawing. EN 10204 3.2 MTC mandatory.
⚠ Caveats
Note: Class 600 and above gate valve bodies are TYPICALLY FORGED not cast – verify PO/drawing. | EN 10204 3.2 MTC mandatory.