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