BS 4504 - Part I

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B S I BS*4504:

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P A R T S 1 67

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BRITISH STANDARD 4504 : 'Part 1 :1969 UDC 621.643.4-034.669.1

SPECIFICATION FOR

FLANGES AND BOLTING FOR PIPES, VALVES AND FITTINGS METRIC SERIES Part 1. Ferrous

O B S 0LESC E N.f

AUG 1989

BRITISH STANDARDS I N S m O N

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Copyright British Standards Institution Provided by IHS under license with BSI No reproduction or networking permitted without license from IHS

Not for Resale

B S I BS*4504:

PARTS3 6 9

Lb24bb9 0277983

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BS 4504 : 1969

THIS BRITISHSTANDARD, having been approved by the Mechanical Engincering Industry Standards Committee, was published under the authority of the Executive Board on 23 September, 1969. SBN: 58005742 9 The Institution desires to call attention to the fact that this British Standard does not purport to incliidc all the necessary provisions of a contract. In order to keep abreast of progress in the industries concerned, British Standards are subject to periodical review. Suggestions for improvements will he recorded and in due course brought to the notice of the committees charged with the revision of the standards to wliich they rcfcr. A complete list of British Standards, numbering over 5000, fully indexed and with a note of the contents of each, will be found in the British Standards Yearbook. The BS Year-book may be consultcd in many public libraries and similar institutions.

This standard makes rcferencc to the following ßriiisli Standards: Pipe threads. Whiteheart malleable iron castings. Blackheart malleable iron castings. Wrought steels in the form of bars, billets, and forgings, up to 6 in ruling section, foi. automobile and general engineering purposes. Enseries. BS 1400;-- S c h e d u l c - o f - e o p p e r r t I l e ) c i n g o r 4 - a n d - e o y p. BS 1452, Grey iron castings, BS 1501. Steels for fired and unfired pressure vesscls. Plates. BS 1501-6. Steels for use in the chemical, petroleum and allied industrics. BS 1821. Class I oxy-acetylene welding of steel pipelincs and pipe assemblies for carrying fluids. BS 2633. Class I arc welding of ferritic steel pipework for carrying fluids. . BS 2640. Class II oxy-acetylene welding of steel pipelines and pipe nsscniblihs for carrying fluids. BS 2789. Iron castings with spheroidal or nodular graphite.

BS 21, BS 309. BS 310. BS 970.

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*sa8?4743~w-effd-eeppw-all-...O-.’ BS 2971. Class I l metal-arc welding of steel pipelines and pipe nsscmblies for carrying fluids: BS 3643. I S 0 metric screw threads. Part 2, Limits and tolerances for coarse pitch series threads. BS 3692. IS0 mctric precision hexagon bolts, screws and nuts. BS 4190. I S 0 metric black hexagon bolts, screws and nuts. BS 4320. Metal washers for general purposes.

BS b37.R Ductile iron pipes a d Vtttings. BS 4622. Grey cast iron pipes and fittings (mctric diinetisions).

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British Statidrirds are revised, wlieti iiecessary, by the issire eitlier oJotiicticltt~ctitslips or of revised e;l.Ìioris. It is imporlotif that risers of British Stoti;lurtls slioirltl osrrrtciiti tliot tliiy ore irr possi*ssiori of tiie latest ntneti(lt,ients or edifiotrs.

’BS4439. Screwed studs for gcneril purposcs. . .BS4882. Bolting for Ranges and pressurecontaining piirposes.

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* l i 1 coiirsc of prepuriilion. Thc following BSI references rrlutc lo ihc work o n I I . .stuiidurd: ~ Conimiiiec refereiicc MEE/i I . MEF./I I;I t h I l for commcnl 67!7402.

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Copyright British Standards Institution Provided by IHS under license with BSI No reproduction or networking permitted without license from IHS

Not for Resale

PART*l b9

BSI B S * 4 5 0 4 :

lb24669 0277982 3

mL

BS 4504 : 1969

CONTENTS Co-opcrating organizations Forcword , , ,

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SPECIFICATION

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Prcssurc/tcmpcrature ratings for steel flanges. Prcssurc/tcmpcratiire ratings for grcy and .mallcable cast iron and copper alloy flanges B. Summary of contents of flange tables , 2.5/2. Stccl wclding ncck flangcs. Nominal pressure 2.5 bar , 2.513. Siccl plaic flanges for welding. Nominal prcssurc 2.5 bar. 2.5/1 I . Intcgral grcy cast iron flangcs. Nominal prcssurc 2.5 bar. Stccl wclding ncck flanges. Nominal pressure 612. , 6bar Stccl plate flangcs for welding. Noiiiinal 6/3. prcssurc 6 bar , Stccl scrcwcd boss flangcs. Nominal prcssurc 614. , ' 6 bar Stccl slip-on boss flanges for wclding. Nominal B/S. prcssurc 6 bar Stccl loose flangcs for wcldcd on lappcd pipe 616, cnds, Nominal prcssiirc 6 bar 618. Stccl platc blank flanges: Nominal prcssure 6 bar 6/l I . Iiitcgral grcy cast iron flanges. Nominal prcssiirc 6 bar , 6/12. Mallcablc cast iron integral flangcs. Nominal prcssurc 6 bar 6/13. Mallcnblc cast iron scrcwed boss flangcs. Nominal prcssurc6 bar , I0/2. Stccl wclding ncck flangcs. Nominal pressure IO bar , , IO/3. Stcci platc flangcs for wclding. Nominal prcssurc IO bar 1015. Stccl slip-on boss flanges for wclding. Nominal pressure IO bar I0/6. Stccl loose flangcs for wcldcd on lappcd p i p cnds, Nominal pressurc 10 bar I0/8. Stccl plate blank flangcs. Nominal prcssurc IO bar , 1o/ I I Intcgral grcy cast iron flangcs. Nominal , prcssurc IO bar ,

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TABLES

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Scopc Design tcmperaturc and prcssurc Dcsignation Flanges Bolting Attachmcnt of flanges , , Hydraiilic tcsting of flangcs. Dctails to Uc supplied by thc piircliascr t4hcn ordcring flangcs and/or bolting Marking

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P'age Integral steel flanges. Nominal pressure 16bar 1612. Steel welding neck flanges, Nominal pressure 16bar 1613, Steel plate flanges for welding. Nominal pressure 16 bar i6/4. Steel screwed boss flanges. Nominal pressure 16 bar 16/5. Steel slip-on boss flanges for welding. Nominal pressure 16 bar 16/8. ,Steel plate blank flanges. Nominal pressure 16bar * . 16/11. Integral grey cast iron flanges. Nominal pressure 16 bar 16/12. Mallcable cast iron integral flanges. Nominal pressure 10 bar and i 6 bar 16/13. Malleable cast iron screwed boss flanges. Nominal pressure 10 bar and 16 bar 46/21: Intcgral copper-.-alloy .- flangesr-Nominal .pressUrel6 bar-,r-.. 25/1. Intcgral stcel flanges. Nominal pressure 25 bar 25/2. Steel welding neck flanges. Nominal pressurc 25 bar 25/3. Steel plate flanges for welding. Nominal pressurc 25 bar , 25/5. Steel slip-on boss flanges for welding. Nominal pressure 25 b a r . 25/8.. Steel plate blank flanges. Nominal pressure 25bar , , 25/11. Integral grcy cast iron flanges. Nominal prcssurc 25 bar 25/12. Mailcablc cast iron integral flanges. Nominal prcssurc 25 bar 25/13. Mallcablc cast iron screwed boss flanges. Noniinal pressure 25 bar , 25/21;-.lntcgrnl copper -alloy flanges. Nominttt pr~ssure-25bar-.- - -I-,. 40/1, Integral stccl Rangcs. Nominal prcssurc 40 bar 40/2. Stccl welding ncck flanges. Nominal pressure 40 bar 40/3. Stccl platc flanges for welding. Nominal pressure 40 bar , 40/4. Stcel screwed boss flanges. Nominal pressure , , 25 barand40 bar 40/5. Stcel slip-on boss flanges for welding, Nominal prcssure 40 bar 40/8. Stccl plate blank flangcs. Noniinal pressure 40bar .40/2~~ntegral--copper~-silIoy-flanges.---Nominat ..pressure 4bar-