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API SPEC 20E-2017 pdf free download

API SPEC 20E-2017 pdf free download.Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries.
3.1.8 manufacturing process specification A written document describing the complete production sequence and method. NOTE Manu fac t uring process specification is usually proprietary by manufact u rer and not for general publ i cation but is available for review by customers or authorized third parties. 3.1.9 production lot Bolting of a single nom in al diameter and grade made from the same heat lo t. 3.1.10 raw material Bar , coil , rod , or wire used to manufacture bolting. 3.1.11 raw material supplier The manufacturer of raw material used to produce qualified bolting defined as the steel mill or forging supplier. NOTE A distributor is not considered a raw material supplier. 3.1. 12 technical authority A competent and technically qualified person or organization with evidence to demonstrate the expertise , skills , and experience regarding quality and manufacturing processes necessary to perform the required verification(s). 3.1.13 wrought structure Structure that conta in s no cast dendritic elements. 3.2 Abbreviations BSL bolting specification level MPS manufacturing process specification NDE nondestructive examination 4 Qualification Bolting 4.1 General 4.1.1 This standard states the requirements for three BSLs and nine bolting types. The manufacturer may qualify to one or more of the bolting types listed in 1 .4 and to one or more BSLs. Each individual bolting type shall be qualified. Oualification to a higher BSL shall qualify to a lower BS L. The following paragraphs describe the conditions that , when met , allow the bolting to meet the appropriate bolting type and BSL classification leve l. 4.1.2 Oualification bolts and nuts shall be produced from raw material procured from an approved supplier as defined in 5.1 and manufactured in accordance with an applicable manufacturing process specification (MPS) frdm a bolting material grade listed in 4.3 .1.
4.2.2 AII required tests , including those certified by the raw material supplier , shall be performed by a laboratory qualified in accordance with 1 80 1 7025. 4.2.3 Oualification may be performed on parts specifically manufactured for qualification or random parts selected from a production lo t. A sufficient number of shall be used to provide adequate material for all required tests. 4.2.4 The manufacturer shall have a quality management system that at a minimum meets the requirements of API 01 . 4.2.5 The manufacturer shall retain and have available an MP8 (see 5.3) and qua lification records (see 4.5) for each product qualified. The qualification records shall show all of the products , processes , and sizes qualified and all of the Table 1 requirements for each qualification including the results of tests and inspections. 4.3 Materials and Dimensions 4.3.1 The following bolting material grades are covered by this standard: ASTM A 1 93 Grades B7 and B7M; A8TM A 1 94 Grades 2H , 4 , 7 , 2HM , and 7M; A8TM A320 Grades L7 , L7M , and L43; A8TM A540 Grades B22 and B23; equipment manufacturer’s proprietary bolting material specification. 4.3.2 AII requirements of the referenced A8TM specifications or the equipment manufacturer’s proprietary bolting material specification shall be met except as modified by this standard. In the case of conflict between the requirements of referenced specifications and this standard , the requirements of this standard shall apply. Bolting manufactured from proprietary materials shall conform to the requirements of this standard. 4.3.3 Oversizing of nut threads or undersizing of bolt threads is not permissible.
4.4. 2.1 Samples failing to meet acceptance criteria shall be cause for reevaluation of the MPS and the processes and procedures used , and requalification is required. When a qualification sample selected from a production lot , defined in 3.1 .9 , fails to meet acceptance cr i ter ia , the entire lot shall be rejected. Should the manufacturer choose to continue the qualification process with the same lot , the entire lot shall be reprocessed. A maximum of two full reheat treatments is permitted. For reprocessed lots , all qualification tests shall be repeated. Should any of the qualification tests fail to meet the acceptance criteria , the entire lot shall be rejected. If reprocessing results in any changes to the MPS , the MPS shall be revised to reflect the new process control variables.

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