API Spec 5CRA-2022

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Corrosion-resistant Alloy Seamless

Products for Use as Casing, Tubing,

Coupling Stock, and Accessory Material

API SPECIFICATION 5CRA

SECOND EDITON, OCTOBER 2022

API MONOGRAM PROGRAM EFFECTIVE DATE: APRIL 1, 2023

ISO 13680:2020 (Modified), Petroleum and natural gas

industries—Corrosion-resistant alloy seamless

tubular products for use as casing, tubing, coupling

stock and accessory material—Technical delivery

conditions

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 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

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 conflict.

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.

API Foreword

This American National Standard is under the jurisdiction of the API Subcommittee on Tubular Goods

(SC 5). This standard is modified from the English version of ISO 13680:2020. ISO 13680:2020 was

prepared by Technical Committee ISO/TC 67 (Materials, equipment and offshore structures for

petroleum, petrochemical and natural gas industries), SC 5 (Casing, tubing and drill pipe).

In this American National Standard, certain technical modifications have been made. These technical

modifications from the ISO Standard have been incorporated directly into the API (US) national adoption.

The modifications are detailed in Annex J (Identification/explanation of modifications).

In this American National Standard, the following editorial deviations have been made throughout the

document:

― Omitting “tubular” in the API title as compared to the ISO title

― Change spelling of words common to the US (e.g. color, not colour)

― Addition of a “” into empty table cells.

― Addition of a period at the end of abbreviation for inch (e.g. in., not in)

― Substitution of a decimal point for a decimal comma (e.g. 4.5, not 4,5)

― Substitution of a comma for a space in numbers ≥ 10,000 (e.g. 12,547, not 12 547)

― Removal of space(s) in numbers ≥ 1000 but < 10,000 (e.g. 5274, not 5 274)

― Removal of space(s) in numbers < 1 (e.g. 0.456987123, not 0.456 987 123)

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 notification

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, reaffirmed, or withdrawn at least every five years. A

one-time extension of up to two years may be added to this review cycle. Status of the publication can be

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摘要：

API Spec 5CRA-2022 是美国石油学会发布的最新版耐腐蚀合金管材规范，适用于石油天然气行业中含硫化氢、二氧化碳等腐蚀性介质的恶劣环境。该标准涵盖了 CRA（Corrosion Resistant Alloy）无缝管和焊接管的制造、检验、试验及认证要求，旨在确保管材在高腐蚀、高压条件下的安全性与可靠性。相比旧版，2022 版更新了材料等级、热处理工艺、无损检测及尺寸公差等关键内容，并加强了对酸性服役环境的适应性规定。对于从事油气勘探、管道工程及材料采购的专业人士而言，掌握 API 5

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