Flanges available in 304 and 316 series stainless steel and carbon steel (C-1018). Monel and other materials upon request. Primary weld is "J" groove type; secondary weld is 45° bevel groove. All welding is performed by Navy certified welders using inert gas shielded arc.
NPSM internal pipe thread will accept NPT and NFS male threads

NOTE: Thermowells for use with these flanges must be specified separately

NOTES:
• Flange prices include welding and machining. It does not include the mating thermowells.
• RF-Raised Face (Standard ASA Serrated)
• FF-Flat Face RTF-Ring Type Flange
• Prices for the 600 #, series flange is the same as the 400 # series. When   ordering the 600 #, series, simply use the Part Number for the 400 # series and add the suffix -600 # Ex: P/N-A27-19- 600 #
• Prices for the 1500 #, series flange is the same as the 900 # series. When   ordering the 1500 # series, simply use the Part Number for the 900 #, series and add the suffix -1500 # Ex: P/N-A27-28-1500lb.

Information about corrosion resistance and melting points of different materials can be found in the Resource Center.