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API SPEC 20A 1st Edition, March 1, 2012
Complete Document
Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy Castings for Use in the Petroleum and Natural Gas Industry
Includes all amendments and changes through Change/Amendment , March 2012
Additional Comments: G20A01
Page Count:42
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Purpose

This standard specifies requirements for the design, foundry qualification, production, marking and documentation of carbon steel, alloy steel, stainless steel and nickel base alloy castings used in the petroleum and natural gas industries when referenced by an applicable API equipment standard or otherwise specified as a requirement for compliance.

Applicability

This standard applies to castings used in the manufacture of pressure containing, pressure controlling and primary load bearing components. Castings manufactured in accordance with this API Standard may be produced using any industry standard casting method.

Casting Specification Levels (CSL)

This standard establishes requirements for four casting specification levels (CSL). These four CSL designations define different levels of cast product technical, quality and qualification requirements. See Annex A for additional information on purchasing API 20A castings.