API Spec 20B-2020 pdf free download

API Spec 20B-2020 pdf free download.Open Die Shaped Forgings for Use in the Petroleum and Natural Gas Industry.
1 Scope 1.1 Purpose This API specification identifies requirements for the forging manufacturer qualification, production, marking, and documentation of open die shaped forgings for use in the petroleum and natural gas industries when referenced by an applicable equipment standard or otherwise specified as a requirement for compliance. 1.2 Applicability This API specification is applicable to equipment used in the oil and natural gas industries where service conditions warrant the use of individually shaped open die forgings, including rolled rings. Examples include pressure containing or load bearing components. Forged bar, rolled bar, and forgings from which multiple parts are removed are beyond the scope of this specification. 1.3 Forging Specification Levels (FSL) This API specification establishes requirements for four forging specification levels (FSL). These four FSL designations define different levels of forged product technical, quality, and qualification requirements. 2 Normative References The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any addenda) applies, except that new editions may be used on issue and become mandatory upon the effective date specified by the publisher or six months from the date of the revision (where no effective date is specified). API Specification 6A, Specification for Wellhead and Tree Equipment API Specification Q1 , Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry ASNT SNT-TC-1 A. Personnel Qualification and Certification in Nondestructive Testing ASTM A370, 1 Standard Test Methods and Definitions for Mechanical Testing of Steel Products ASTM A388/A388M, Standard Practice for Ultrasonic Examination of Steel Forgings
The total hot work reduction ratio is defined as the product of the individual reduction ratios achieved at each step in the hot work operation, from ingot cross section to the final hot work cross section. The ingot cross section is obtained after casting or the final remelt step and any ingot grinding or surface preparation prior to the hot working. When the cross-section of the starting material or forged part varies, the cross-section resulting in the lowest calculated hot work ratio is used. 3.1.15 inclusions Particles of nonmetallic compounds of metals and impurity elements, such as oxides, sulfides, or silicates, that are present in ingots and are carried over in wrought products. 3.1.16 ingot A cast product intended for subsequent remelting or hot working by rolling, forging, or extrusion. 3.1.17 ladle refining Practices used on molten steel in the ladle that are used to adjust and refine the melt chemistry. 3.1.18 forging manufacturer An organization that performs forging activities in conformance with this specification. 3.1.19 melt practice Type of process used to produce a heat of metal. Includes the use of equipment for melting and refining. 3.1.20 on-site Forging manufacturer’s facility. 3.1.21 open die forging Process where the hot mechanical forming of metals between flat or shaped dies in which metal flow is not completely restricted.
4.2 Qualification Forging 4.2.1 A qualification forging shall be produced, tested, and evaluated by the forging manufacturer to establish qualification for a range of products listed in Table 1 . Forgings shall be produced in accordance with a manufacturing process specification, as specified in 5.3. The material group of the qualification forging shall be in accordance with Table 2. Qualification forgings are to be in their completed forged form, with the addition of any specified rough machining and full heat treatment, to establish the final mechanical properties required of the finished product. Qualification forgings shall be produced in accordance with the requirements of Section 4, Section 5, and the forging manufacturer’s written specification that defines acceptance criteria. 4.2.2 A forging qualified to a specific FSL also qualifies lower FSLs (e.g., FSL-4 qualifies FSL-3, FSL-2, and FSL-1 forgings) within the limitations of Section 4.4.