Welding Neck Flange/WN Flanges as per MSS SP44
Socket Welded Flanges/SW Flanges as per MSS SP44
Threaded Flanges/THD Flanges as per MSS SP44
Lap Joint Flanges/LJ Flanges as per MSS SP44
BLIND FLANGES/BL Flanges as per MSS SP43
SLIP-ON Flanges/SO Flanges as per MSS SP43
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