DNV-CP-0249-2026 铸铁件 Iron castings

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CLASS PROGRAMME

Approvalofmanufacturers

DNV-CP-0249 EditionMarch2026

Ironcastings

ThecontentofthisservicedocumentisthesubjectofintellectualpropertyrightsreservedbyDNVAS(“DNV”).Theuser

acceptsthatitisprohibitedbyanyoneelsebutDNVand/oritslicenseestoofferand/orperformclassification,certification

and/orverificationservices,includingtheissuanceofcertificatesand/ordeclarationsofconformity,whollyorpartly,onthe

basisofand/orpursuanttothisdocumentwhetherfreeofchargeorchargeable,withoutDNV’spriorwrittenconsent.DNV

isnotresponsiblefortheconsequencesarisingfromanyuseofthisdocumentbyothers.

ThePDFelectronicversionofthisdocumentavailableattheDNVwebsitednv.comistheofficialversion.Ifthere

areanyinconsistenciesbetweenthePDFversionandanyotheravailableversion,thePDFversionshallprevail.

DNVAS

FOREWORD

DNVclassprogrammescontainproceduralandtechnicalrequirementsincludingacceptance

criteriaforobtainingandretainingcertificatesforobjectsandorganisationsrelatedto

classification.

©DNVASMarch2026

Anycommentsmaybesentbye-mailtorules@dnv.com

Thisservicedocumenthasbeenpreparedbasedonavailableknowledge,technologyand/orinformationatthetimeofissuanceofthis

document.TheuseofthisdocumentbyotherpartiesthanDNVisattheuser'ssolerisk.DNVdoesnotacceptanyliabilityorresponsibility

forlossordamagesresultingfromanyuseofthisdocument.

CHANGES–CURRENT

ThisdocumentsupersedestheJune2023editionofDNV-CP-0249.

Thenumberingand/ortitleofitemscontainingchangesishighlightedinred.

ChangeMarch2026

Topic Reference Description

Steppedwedge Sec.2[1.3] Updatedwithcorrectthicknessvalues.

Rangeofapproval App.A,

App.B

Updatedtherangeofapprovalforgreyandnodularcastiron.

Editorialcorrections

Inadditiontotheabovestatedchanges,editorialcorrectionsmayhavebeenmade.

Changes-current

Classprogramme:Approvalofmanufacturers—DNV-CP-0249.EditionMarch2026 Page3

Ironcastings

DNVAS

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标签： #铸铁 #DNV

摘要：

DNV-CP-0249-2026 是挪威船级社（DNV）发布的最新铸铁件标准规范，适用于船舶与海洋工程领域对铸铁材料及其铸造工艺的认证要求。该标准涵盖灰口铸铁、球墨铸铁及合金铸铁的化学成分、力学性能、无损检测及验收准则，旨在确保铸铁件在严苛海洋环境下的可靠性、耐腐蚀性和长期使用寿命。作为2026年修订版，它更新了材料等级划分、热处理工艺要求及尺寸公差控制，并增加了对铸造缺陷等级评定和修复流程的明确规定。本标准适用于制造船用螺旋桨、泵体、阀体及各类结构件时的设计审核、工厂检验与产品认证，是船舶制造

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DNV-CP-0249-2026 铸铁件 Iron castings

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