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Standards:
- A105: Carbon Steel Forgings for Piping Applications
- ANSI B1.1: -Unified Screw Threads spec.
- ASME B1.20.3: Dry seal pipe thread,NPT Thread
- - Surface: As Forged or Machined
- - Thread: NPT
Sample drawings:
Forging, then machined surface
NPT Thread (ASME B1.20.1):
