Technical Info Flanges

FlangesTECHNICAL INFORMATION, CONSTRUCTION MEASUREMENTS,TECHNICAL TERMS OF DELIVERY

RO-FI Precision in Stainless Steel

Reliability by quality management - ISO 9001

Zuverlässigkeitdurch Qualitäts-

management

Reliability by quality

management

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Flanges – spring and slot DIN 2512

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Flanges


Slot flanges can be marked with a of the outer edge circumferential channel, by agreement.

Nominal pressures consider in connection

with the corresponding dimension standards for flanges

Nominal pressures (PN) 10 till 160 – construc-tion dimensions

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SpringForm F (normal case)

Form F (special case)other dimensions and details as in form F

dimensions in mm

SlotForm N (normal case)

Form NA (special case)other dimensions and details as in form F

rotated

rotated

b = bulking thickness accordingto the dimension standard

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Flanges


Flanges – spring and slot DIN 2512Nominal pressures (PN) 10 till 160 – construction dimensions

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nominal width

spring slot

Bracked nominal width if it’s possible*) just for flanges of the refregeration

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Flanges


Flanges – spring and slot DIN 2512Nominal pressures (PN) 10 till 160 – construction dimensions

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Bracked nominal width if it’s possible*) just for flanges of the refregeration

nominal width nominal width

Insert ringfor flange connections slot against slot

Appelation of a insert ring for slot flanges of a nominal width 65 of RSt 37-2:

rotated

ring 65 DIN 2512 – Rst 37-2

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Flanges


Flanges – nose flange and retrace flange DIN 2513Nominal pressure (PN) 10 till 40 – construction dimensions

This norm consider in connection with the corresponding dimensions for flanges.

male faced flangeForm V 13

female faced flangeForm R 13

dimension in mm

b = bulking thickness according to the dimension standard

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1) Retrace flanges could be, if desired from the orderer,marked with a channel at the circumferential outeredge.

Flanges, overview see DIN 2500Flanges, forms of the seal face see DIN 2526Steel flanges, technical conditions of delivery see DIN 2519Flat seal ring for flanges with nose and retrace see DIN 2692

Bracketed nominal width are to anoid, if it’s possible

nominalwidth

male faced female faced

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Flanges


Flanges – nose flange with groove and retrace DIN 2514Nominal pressure (PN) 10 till 40 – construction dimensions

dimensions in mmThis norm consider in connection with the corresponding dimensions for flanges.

The groove for round-seals can even be used for flat flanges or flanges with raised face.

female facedForm R

male facedForm V

dimensions at assemblingb = bulking thickness according to the dimension standard

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rotated

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Flanges


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Flanges – nose flange with groove and retrace DIN 2514Nominal pressure (PN) 10 till 40 – construction dimensions

nominalwidth

male faced female faced

Bracketed nominal width are to anoid, if it’s possible

SealingRing

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Steel Flanges DIN 2519 – Technical conditions of delivery

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Flanges


1 CoverageThis technical conditions of delivery consider for all steelflanges which are made of the material named in chapter2 and produced by one of the processes in chapter 4.1.They consider for example for:

- Blind flanges according to DIN 2527- Screwed flange according to DIN 2558, DIN 2561,

DIN 2565, DIN 2566, DIN 2567, DIN 2568 and DIN 2569- Flat flanges to soldering or welding according to

DIN 2573 and DIN 2576- Weld neck flanges according to DIN 2627 *), DIN 2628,

DIN 2629, DIN 2630, DIN 2631, DIN 2632, DIN 2633, DIN2634, DIN 2635, DIN 2636, DIN 2637 and DIN 2638

- Lose flanges for collar pipes according to DIN 2641 and DIN 2642

- Lose flanges with bunch according to DIN 2652, DIN 2653, DIN 2655 and DIN 2656

- Lose flanges with butt-welded collar according to DIN 2667, DIN 2668 and DIN 2669

- Lose flanges with butt-welded collar according to DIN 2673

This technical conditions of delivery have to use also ifthe relevant dimension standards doesn´t refer to it; theydoes n´t consider if in the dimension standards, othertechnical conditions of delivery are defined.

2 MaterialsThe flanges are made of materials which are defined inthe accordant dimension standard. If for special applicati-ons, for example heat resisting, low-temperature, stain-less steels are necessary, than the choice of steel is in thecase of the orderer.

3 Description of steelsFor all description are decisive:- for all general construction steels the shortnames accor-

ding to DIN 17100- for all other steels, the in the accordant norms and spe-

cial provisions, denoted shortnames

4 Requirements4.1 Manufacturing process

Type of flange manufacturing processmade bended andof forged compressed seamless welded of plate rolled rolled sections

flat oval flanges and � � � - -bund flangesflat flanges � � � - -flat bunches � � � � �

flanges with accretion - � � � �

weld not flanges - � � � �

and bunches

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Flanges


4.2 Condition of deliveryThe flanges have to be accord to the in the delivery deno-ted dimension standards ad-measurements, explanationsand materials. If there isn´t denoted a special accomplish-ment consider for the conditions of delivery the followingtable according to the choice of the manufacturer.

4.3 Kind of surfaceAll surfaces have to be in a top condition which does n´taffected the application of the flanges. The nut bearingfaces have to be parallel to the seal face. Machined surfa-ces have to accord to the according to DIN 3141 (pre-stan-dard), edition march 1960ox, line 1. Seal surfaces shoutnot be finer as 40 μm depth of roughness.

1) At the application of extension bolts according to DIN 2510 the orderer have toinstruct that the accomplishment of the nut-bearing face with the letter codes in the DIN-appellation is arranged before the short mark.

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outer edge

unmachined

with winding

unmachined

or or

or

center hole seal face screw holes nut bearing face

brunchescrude

or flanges

brunchesand

flanges

brunches

flanges

brunchesor

flanges

brunches

flanges

brunchesor

flanges

brunches

flanges

brunches

flanges

brunches

flanges

orblanked

ordrilled

blankedor

drilled

drilled

blankedor

drilled

drilled

blankedor

drilled

drilled

blankedor

drilled

drilled

5/9RO-FI Precision in Stainless Steel

Flanges

4.4 Acceptable dimension meanderings

5 InspectionsAt the delivery with approval the flanges will be checkedby batches. For this you have to organise the flanges bysteel grade and , if it´s possible, by dimensions, and toarrange them in batches of 100 articles. The remainingquantity can be disturb equally in the specific batches.The quantities and the remaining quantities between 51and 100 flanges and the delivery of 50 flanges and lessconsider as one closed batch. The inspection scope of theorder have to arrange between orderer and manufacturer.The assays have to arrange in the manufacturing plant.About the assays will be certificate a test report accor-ding to DIN 50049, edition April 1960, chapter 2, or a certi-ficate according to chapter 3.

6 Identification markAll standardised flanges have to be marked as following:- manufacturer´s sign- nominal width/external diameter of the tube- nominal pressure- material association mark DIN

7 ComplaintExternal and internal faults just may be complained ifthey prejudice more than irrelevant the reasonable con-verting and application of the steel garde and the form ofmanufacture.

The orderer have to afford an opportunity to the supplierto satisfy about the authority of the complaint, if it´s pos-sible by present the reference sample of the complainedflange.


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At keyed gaskets the concentrically have to be warranted for bolt circle and centre hole. The acceptable dimensional deviation for the diameter of the centre hole, the hole centre distance and the diameter of the screw hole will be bordered by the play between stud-bolt and the diameter of the screw hole.

bolt circlediameter

diameter ofthe seal

mg thickness 3)

flange height

flange thickness

centre hole

externaldiameter over

overover

tototo

overover

toto

to

toover

toover

toover

toover

totoover

over

totoover

over

totoover

over

dimension dimensional rangemachined unmachined

accomplishment

except flange flange

both surfaces one surfaces

Flanges DIN 2526 – forms of the seal facesArea of applicationThis norm contains an compendium about the appellationand short marks the of the detailed types of gaskets requiredforms of the seal faces.

Flanges without sealing strip

Form ASeal face without accountForm BSealing strip Rz=160 (not finer than 40 μm), rotated

Flanges with sealing strip

Form CSealing stripe Rz=160 (not finer than 40 μm), rotatedForm DSealing strip Rz=40, rotatedForm ESealing stripe Rz=16 , rotated

Form Fspring according to 2512

Form Nnotch according to DIN 2512

Form V 13male faced according to DIN 2513

Form R 13female faced according to DIN 2513

Form V 14male faced according to DIN 2514

Form R 14female faced according to DIN 2514

Form Mslant for membrane-welded gasket according to DIN 2695

Form Lgroove for lenticular gasket according to 2696

Flanges with keyed sealing stripe

Flanges

RO-FI Precision in Stainless Steel5/10

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MiddleOstendstraße 3

D-63110 Rodgau-Niederroden

Tel. +49 (0) 61 06 2 85 79-30

Fax +49 (0) 61 06 2 22 08

[email protected]

EastReuterstraße 2

D-99867 Gotha

Tel. +49 (0) 36 21 7 33 97-0

Fax +49 (0) 36 21 7 33 97-10

[email protected]

North ExportMittelgönrather Straße 15

D-42655 Solingen

Tel. +49 (0) 2 12 2 32 54-0

Fax +49 (0) 2 12 2 32 54-11

[email protected]

SouthKarl-Arnold-Straße 7

D-73230 Kirchheim/Teck

Tel. +49 (0) 70 21 94 35-0

Fax +49 (0) 70 21 5 60 31

[email protected]

www.rofi.de



management


management Reliability by quality management - ISO 9001

S TA I N L E S S S T E E L

MiddleOstendstraße 3

D-63110 Rodgau-Niederroden

Tel. +49 (0) 61 06 2 85 79-30

Fax +49 (0) 61 06 2 22 08

[email protected]

EastReuterstraße 2

D-99867 Gotha

Tel. +49 (0) 36 21 7 33 97-0

Fax +49 (0) 36 21 7 33 97-10

[email protected]

North ExportMittelgönrather Straße 15

D-42655 Solingen

Tel. +49 (0) 2 12 2 32 54-0

Fax +49 (0) 2 12 2 32 54-11

[email protected]

SouthKarl-Arnold-Straße 7

D-73230 Kirchheim/Teck

Tel. +49 (0) 70 21 94 35-0

Fax +49 (0) 70 21 5 60 31

[email protected]

www.rofi.de



management


management Reliability by quality management - ISO 9001

S TA I N L E S S S T E E L

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Technical Info Flanges