ISO49-1994符合ISO 7-1螺纹的可锻铸铁配件.pdf

INTERNATIONALISO

STANDARD49

Secondedition

1994-12-15

Malleablecastironfittingsthreadedto

ISO7-1

Raccordsenfontemalleablefiletesconformementa川so7-1

三另在击运三

~ISOJ

Referencenumber

三兰也彭垂三

ISO49:1994(El

ISO49:1994(E)

Foreword

ISO(theInternationalO「ganizationforStandardization)isaworldwide

fede「ationofnationalstandardsbodies(ISOmemberbodies).Thework

ofpreparingInternationalStanda「dsisnormallycarriedoutthroughISO

technicalcommittees.Eachmembe「bodyinterestedinasubjectfo「

whichatechnicalcommitteehasbeenestablishedhastherighttobe

rep「esentedonthatcommittee.Internationalorganizations,governmental

andnon-governmental,inliaisonwithISO,alsotakepartinthework.ISO

collaboratescloselywiththelnte「nationalElectrotechnicalCommission

(IEC)onallmattersofelectrotechnicalstandardization.

DraftInternationalStanda「dsadoptedbythetechnicalcommitteesare

circulatedtothememberbodiesforvoting.Publicationasanlnte「national

Standard「equiresapp「ovalbyatleast75%ofthememberbodiescasting

avote.

InternationalStandardISO49waspreparedbyTechnicalCommittee

ISO厅C5,Ferrousmetalpipesandmetallicfittings,SubcommitteeSC5,

Threadedorplainendbutt-weldingfittings,threads,gaug的gofthreads.

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