Weld Neck Flange – High Pressure Applications
Weld neck flanges are designed for high-pressure and high-temperature applications. SongHai manufactures certified weld neck flanges per ASME B16.5, DIN 2573, and JIS B2220.
Specifications
- Pressure Classes: 150#, 300#, 600#, 900#, 1500#, 2500#
- Materials: 304L, 316L, 321, 347, F51, F53, F55
- Face Types: RF (Raised Face), RTJ (Ring Type Joint), FF (Flat Face)
- Bore Types: Standard, Reduced, Large
Advantages
- Superior stress distribution at the weld joint
- Ideal for extreme temperature applications
- Reduced risk of leakage under cyclic conditions
- Butt weld provides smooth flow path
Common Applications
- High-pressure steam lines
- Cryogenic service
- Offshore oil platforms
- Refinery process piping
Contact: 1007788887@qq.com for weld neck flange quotes.
You may also like
ASME B16.47 Flanges Guide: Series A vs Series B for Large Diameter Piping
Learn what ASME B16.47 means for large diameter steel flanges, including Series A vs Series B differences, dimensions, applications, pressure class and purchasing checks.
Read 6 · Comments 0
•
2026-08-31
ANSI ASME Flanges Guide: ASME Class, ANSI and ASME Differences Explained
Learn the difference between ANSI and ASME, what ASME class means for flange pressure ratings, and how to specify ANSI ASME flanges for industrial piping.
Read 10 · Comments 0
•
2026-08-31
ASME B16.5 Flanges Guide: ANSI B16.5 Dimensions, Classes and Buying Checks
Learn what ASME B16.5 and ANSI B16.5 mean for pipe flanges, including size range, flange classes, face types, materials, markings and purchasing checks.
Read 17 · Comments 0
•
2026-08-29
