1、Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas IndustriesAPI SPECIFICATION 20F FIRST EDITION, JUNE 2015Special NotesAPI publications necessarily address problems of a general nature. With respect to particular circumstances, local, state, and federal laws and regulations should
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4、ions may be used by anyone desiring to do so. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims an
5、y liability or responsibility for loss or damage resulting from its use or for the violation of any authorities having jurisdiction with which this publication may conflict.API publications are published to facilitate the broad availability of proven, sound engineering and operating practices. These
6、 publications are not intended to obviate the need for applying sound engineering judgment regarding when and where these publications should be utilized. The formulation and publication of API publications is not intended in any way to inhibit anyone from using any other practices.Any manufacturer
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9、0 L Street, NW, Washington, DC 20005.Copyright 2015 American Petroleum InstituteForewordNothing contained in any API publication is to be construed as granting any right, by implication or otherwise, for the manufacture, sale, or use of any method, apparatus, or product covered by letters patent. Ne
10、ither should anything contained in the publication be construed as insuring anyone against liability for infringement of letters patent.Shall: As used in a standard, “shall” denotes a minimum requirement in order to conform to the specification.Should: As used in a standard, “should” denotes a recom
11、mendation or that which is advised but not required in order to conform to the specification.This document was produced under API standardization procedures that ensure appropriate notification and participation in the developmental process and is designated as an API standard. Questions concerning
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13、ion to reproduce or translate all or any part of the material published herein should also be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-time extension of up to two years may be added to this review cycle. St
14、atus of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is published annually by API, 1220 L Street, NW, Washington, DC 20005.Suggested revisions are invited and should be submitted to the Standards Departmen
15、t, API, 1220 L Street, NW, Washington, DC 20005, standardsapi.org.iiiContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Purpose. . . . . . . . . . . . . . . . . .
16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、11.3 Bolting Specification Levels (BSL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4 Bolting Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . 11.5 Application of the API Monogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、 . . . . . . . . . . . . . . . . . . . . . 23 Terms, Definitions, Acronyms, and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1 Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . . . . . . . . . . . 23.2 Acronyms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Qualification Bolting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.2 Qualification Testing . . . . . . . . . . . . . . .
22、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.3 Materials and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54.4 Acceptance of Qualification
23、 Bolting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54.5 Records of qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54.6 Limits o
24、f Bolting Qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Production of Qualified Bolting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25、 . . 65.1 Qualification of Procurement Sources for Raw Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.2 Material Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、 . . . . 75.3 Manufacturing Process Specification (MPS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85.4 Heat Treatment Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、 . . . . . . 85.5 Raw Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95.6 Chemical Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . . . . . . . . . . 95.7 Mechanical Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95.8 Metallurgical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105.9 Examination and Test Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105.10 Nondestructive Examination (NDE) Requirements . . . . . . . . . . . . . .
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105.11 Dimensional Inspection and Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105.12 Final Positive Material Identification . . . . . . . . . . . . . . . . . . . . . . . .
31、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Calibration Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Test Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Marking Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.1 Product Marking128.2 Additional Marking
33、Required by this Standard 129 Record Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1210 Storage and Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . . . . . . . . . . . . . . . . . . . 12Annex A (informative) API Monogram Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Tables1 Bolting Test Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Sampling for Dimensional and Visual Inspection . . . . .
36、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11v1Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries1 Scope1.1 PurposeThis specification specifies requirements for the qualification, production and documentation of corrosion resistant b
37、olting used in the petroleum and natural gas industries.1.2 ApplicabilityThis standard applies when referenced by an applicable API equipment standard or otherwise specified as a requirement for compliance.1.3 Bolting Specification Levels (BSL)This specification establishes requirements for two bolt
38、ing specification levels (BSL). These two BSL designations define different levels of technical, quality and qualification requirements. The levels are designated as BSL-2 and BSL-3. BSL-2 includes requirements in addition to those stated in the ASTM A453 and API 6A718. BSL-3 adds technical, quality
39、 and qualification criteria to BSL-2. BSL-2 and BSL-3 are intended to be comparable to BSL-2 and BSL-3 as found in API 20E. BSL-1 is omitted from this standard.1.4 Bolting TypesThis specification covers the following product forms, processes, and sizes:a) machined studs;b) machined bolts, screws and
40、 nuts;c) cold headed bolts, screws and nuts;d) hot formed bolts and screws 1.5 in. (38.1 mm) nominal diameter;e) hot formed bolts and screws 1.5 in. (38.1 mm) nominal diameter;f) roll threaded studs, bolts, and screws 1.5 in. (38.1 mm) diameter;g) roll threaded studs, bolts, and screws 1.5 in. (38.1
41、 mm) diameter;h) hot formed nuts 1.5 in. (38.1 mm) nominal diameter;i) hot formed nuts 1.5 in. (38.1 mm) nominal diameter.1.5 Application of the API MonogramIf product is manufactured at a facility licensed by API and it is intended to be supplied bearing the API Monogram, the requirements of Annex
42、A apply.2 API SPECIFICATION 20F2 Normative ReferencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appli
43、es, except that new editions may be used on issue and become mandatory 6 months from the date of publication.API Specification 6A, Specification for Wellhead and Christmas Tree EquipmentAPI Standard 6A718, Nickel Base Alloy 718 (UNS N07718) for Oil and Gas Drilling and Production EquipmentANSI/NCSL
44、Z540.3 1, Requirements for the Calibration of Measuring and Test EquipmentASTM A370-14 2, Standard Test Methods and Definitions for Mechanical Testing of Steel ProductsASTM A453, Standard Specification for High-Temperature Bolting, with Expansion Coefficients Comparable to Austenitic Stainless Steel
45、sASTM A751, Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsASTM A962-14a, Standard Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep RangeASTM E10, Standard Test Method for Brinell Hardness of M
46、etallic MaterialsASTM E18, Standard Test Methods for Rockwell Hardness of Metallic MaterialsASTM E1476, Standard Guide for Metals Identification, Grade Verification, and SortingASTM F788, Standard Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series ASTM F812
47、, Standard Specification for Surface Discontinuities of Nuts, Inch and Metric Series SAE AMS 2750, PyrometrySAE AMS H-6875, Heat Treatment of Steel Raw Materials3 Terms, Definitions, Acronyms, and Abbreviations3.1 Terms and Definitions For the purposes of this document, the following definitions app
48、ly.3.1.1 boltingAll-thread studs, tap-end studs, double-ended studs, headed bolts, cap screws, screws, and nuts.3.1.2 cold formed bolts, screws, and nutsParts formed through the mechanical cold upsetting of wire, rod or bar in order to generate the bolt or screw head (cold heading) or the configurat
49、ion of the nut.1NCSL International, 2995 Wilderness Place, Suite 107, Boulder, Colorado 80301-5404, www.ncsli.org.2ASTM International, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428, www.astm.org.CORROSION RESISTANT BOLTING FOR USE IN THE PETROLEUM AND NATURAL GAS INDUSTRIES 33.1.3 corrosion resistant boltingBolting manufactured from metal that achieves improved resistance to corrosion through the addition of alloying elements.3.1.4 heatMaterial originating from a final melt, or for remelted alloys, the raw material originating from a single remelted ingot.3.1.5 heat lota
