API RP 5MT-2021

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Pipeline Inspection Documents for

Material Traceability and Electronic Test

Reports

RECOMMENDED PRACTICE 5MT

FIRST EDITION, SEPTEMBER 2021

Special Notes

API publications necessarily address problems of a general nature. With respect to particular circumstances, local,

state, and federal laws and regulations should be reviewed. The use of API publications is voluntary. In some cases,

third parties or authorities having jurisdiction may choose to incorporate API standards by reference and may mandate

compliance.

Neither API nor any of API's employees, subcontractors, consultants, committees, or other assignees make any

warranty or representation, either express or implied, with respect to the accuracy, completeness, or usefulness of

the information contained herein, or assume any liability or responsibility for any use, or the results of such use, of

any information or process disclosed in this publication. Neither API nor any of API’s employees, subcontractors,

consultants, or other assignees represent that use of this publication would not infringe upon privately owned rights.

API publications may be used by anyone desiring to do so. Every eort 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 any 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

conict.

API publications are published to facilitate the broad availability of proven, sound engineering and operating practices.

These publications are not intended to obviate the need for applying sound engineering judgment regarding when and

where these publications should be used. The formulation and publication of API publications is not intended in any

way to inhibit anyone from using any other practices.

Any manufacturer marking equipment or materials in conformance with the marking requirements of an API standard

is solely responsible for complying with all the applicable requirements of that standard. API does not represent,

warrant, or guarantee that such products do in fact conform to the applicable API standard.

means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the publisher.

Contact the Publisher, API Publishing Services, 200 Massachusetts Avenue, NW, Suite 1100, Washington, DC 20001-5571.

Foreword

Nothing 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. Neither should anything

contained in the publication be construed as insuring anyone against liability for infringement of letters patent.

The verbal forms used to express the provisions in this document are as follows.

Shall: As used in a standard, “shall” denotes a minimum requirement to conform to the standard.

Should: As used in a standard, “should” denotes a recommendation or that which is advised but not required to

conform to the standard.

May: As used in a standard, “may” denotes a course of action permissible within the limits of a standard.

Can: As used in a standard, “can” denotes a statement of possibility or capability.

This document was produced under API standardization procedures that ensure appropriate notication and participation

in the developmental process and is designated as an API standard. Questions concerning the interpretation of the

content of this publication or comments and questions concerning the procedures under which this publication was

developed should be directed in writing to the Director of Standards, American Petroleum Institute, 200 Massachusetts

Avenue, Suite 1100, Washington, DC 20001. Requests for permission 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, rearmed, or withdrawn at least every ve years. A one-time

extension of up to two years may be added to this review cycle. Status 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, 200 Massachusetts Avenue, Suite 1100, Washington, DC 20001.

Suggested revisions are invited and should be submitted to the Standards Department, API, 200 Massachusetts

Avenue, Suite 1100, Washington, DC 20001, standards@api.org.

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摘要：

API RP 5MT-2021 是美国石油学会发布的关于管线管螺纹检验与修复的最新推荐规范，适用于石油天然气行业中使用的焊接和无缝管线管螺纹连接。该标准详细规定了螺纹外观、尺寸、量规检验、缺陷判定及修复方法，旨在确保螺纹连接的密封性与机械强度，降低现场泄漏和失效风险。文档覆盖了从新螺纹验收至现场维修操作的全流程技术要求，是油套管接头生产、检测及使用单位必须参考的质量控制依据。对于从事油气管道工程、钻采设备维护及质量管理的专业人员，该标准提供了权威的螺纹检验准则和操作指南，有助于提升作业安全性和合

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API RP 5MT-2021

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