API Standard 20S First Edition 2021 PDF
This standard specifies requirements for qualification of the manufacturing process, production, marking, and documentation of additively manufactured metallic components used in the petroleum and natural gas industries when referenced by an applicable API equipment standard or otherwise specified as a requirement for conformance.
This standard applies to additively manufactured metallic components produced by powder bed fusion (PBF), directed energy deposition (DED), and binder jetting (BJT) processes.
This standard establishes requirements for three additive manufacturing specification levels (AMSL). These three AMSL designations – AMSL 1, AMSL 2, and AMSL 3 – define increasing levels of additive manufacturing technical, quality, and qualification requirements.
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