1、February 2009DEUTSCHE NORM Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (D
2、IN-Normen).ICS 23.040.60!$XyH“1538637www.din.deDDIN 2430-2Piping for pigging systems Part 2: Pipe jointsRohrleitungen fr Molchanlagen Teil 2: RohrverbindungenSupersedesDIN 2430-2:2002-11www.beuth.deDocument comprises 8 pagesIn case of doubt, the German-language original should be consulted as the au
3、thoritative text.DIN 2430-2:2009-02 Contents Page Foreword. 3 1 Scope . 4 2 Normative references . 4 3 Flanges 4 3.1 Dimensions and designation. 4 3.2 Material 7 3.3 Testing . 7 3.4 Marking 7 3.5 Materials testing certificate . 7 4 Welded connections. 7 4.1 General. 7 4.2 Requirements 8 4.3 Testing
4、. 8 2 DIN 2430-2:2009-02 Foreword This standard has been prepared by Technical Committee NA 082-00-03 AA Molchbare industrielle Rohr-leitungen of the Normenausschuss Rohrleitungen und Dampfkesselanlagen (Piping and Boiler Plant Standards Committee). The DIN 2430 series of standards comprises: Part 1
5、: Straight pipes and elbows Part 2: Pipe joints Part 3: Trial pigging (prior to commissioning) Amendments This standard differs from DIN 2430-2:2002-11 as follows: a) Dimensions and tolerances have been brought into line with current practice. b) The materials to be used are now only identified by t
6、he material numbers (previously the steel name was also given). Previous editions DIN 2430-2: 1924-09, 1929-12, 2002-11 3 DIN 2430-2:2009-02 1 Scope This standard specifies requirements and methods of test for joints in pipes and elbows as in DIN 2430-1, flanges and valves as part of piggable piping
7、 systems. 2 Normative references The following reference documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 2430-1, Pigga
8、ble piping systems Part 1:Straight pipes and elbows DIN EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges DIN EN 10028-7, Flat products made of steels for pressure purposes Part 7: Stainless steels DIN EN ISO 5817, W
9、elding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfections ASTM A 240/A 240 M1), Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels 3 Flanges 3.1 Dimensions and designation Pigg
10、able flanges shall have dimensions as specified in Figure 1 and Table 1. Designation of a flange of nominal size DN 50, made of steel of material number 1.4404, rated for a pressure of 40 bar (PN 40), with grooved facing (R): Flange DIN 2430 50 40 R 1.4404 This standard only specifies the dimensions
11、 and tolerances relevant to piggability. All other dimensions for type 11 flanges, use of which is recommended, are to be found in DIN EN 1092-1. Such flanges normally require machining for connection to piggable pipes and fittings. For ease of jointing, flanges with grooved and raised facings shall
12、 be used since they do not require any centring elements (e.g. pins) for assembly. 1) Obtainable from Beuth Verlag GmbH, 10772 Berlin, Germany. 4 DIN 2430-2:2009-02 5 Dimensions in millimetres Flange with grooved facing (R) Flange with raised facing (V) Figure 1 Weld-on flanges (notation) DIN 2430-2
13、:2009-02 Table1 Flangedimensionsand tolerancesDimensionsin millimetresd d1d2d3ad4bh1h1h1h2h3h4h5O-ringsizeNominal size PN16 PN25 PN40 DN 2529,7 0,133,7 02,043,4 02,053 046,0 0+53 060,0106,0 36 1,5 36 1,5 38 1,5 6 0,5 2,7 05,0 0+2,5 01,02,2 01,047,223,53DN 5054,5 0,160,3 03,068,4 02,078 046,0 0+78 06
14、0,0106,0 43 1,5 43 1,5 45 1,5 6 0,5 2,7 05,0 0+2,8 01,02,5 01,072,623,53DN 8082,5 0,15 88,9 04,0100,4 02,0110 054,0 0+110 072,0126,0 47 1,5 47 1,5 55 1,5 7 0,5 2,7 05,0 0+2,8 01,02,5 01,0104,37 3,53DN100 107,1 0,15114,3 04,0125,4 02,0135 063,0 0+135 085,0148,0 49 2 49 2 62 2 9 0,5 2,7 05,0 0+2,8 01,
15、02,5 01,0129,77 3,53DN 125131,7 0,15139,7 04,0152,9 02,0167 063,0 0+167 085,0148,0 52 2 52 2 65 2 9 0,5 4,3 05,0 0+2,8 01,02,5 01,0158,12x5,33 DN150 159,3 0,2 168,3 04,0184,8 02,0199 072,0 0+199 100,0172,0 52 2 52 2 72 2 9 0,5 4,3 05,0 0+2,8 01,02,5 01,0189,87 5,33DN200 206,5 0,25215,5 05,0221,8 03,
16、0236 072,0 0+236 100,0172,0 59 2 77 2 85 2 13 0,5 4,3 05,0 0+2,8 01,02,5 01,0227,97 5,33aTolerance:H8 b Tolerance:e8 NOTERubber or coated O-rings or spring-loaded rings maybe used for sealing.6 DIN 2430-2:2009-02 3.2 Material Flanges shall be made of steel of the material numbers specified in Table
17、2. Table 2 Materials Material number as in DIN EN 10028-7 Equivalent material as in ASTM A 240/A 240 M 1.4306 1.4307 AISI 304L 1.4541 AISI 321 1.4404 AISI 316L 1.4571 AISI 316Ti NOTE For further information, see Annex A of DIN 2430-1:2001. 3.3 Testing Stress analysis shall be carried out for resista
18、nce to static pressure and, where relevant, to dynamic pressure. 3.4 Marking Marking shall be as in DIN EN 1092-1. Additionally, flanges shall be marked with the number of this standard (DIN 2430), their type (V or R). 3.5 Materials testing certificate Compliance of flanges with the requirements of
19、the order shall be verified by means of an inspection certifi-cate 3.1 as in EN 10204. 4 Welded connections 4.1 General In accordance with the current state of technology, the quality of welds required for pigging will only be ensured by semi-automatic orbital welding (generally, without the use of
20、welding consumables). 7 DIN 2430-2:2009-02 8 4.2 Requirements Welds shall have no sharp edges. Linear misalignment shall not exceed the values specified in Table 3 (see Figures 2 and 3). Figure 2 Weld offset in horizontal pipe Figure 3 Weld offset in vertical pipe Table 3 Maximum linear misalignment
21、 (offset) Dimensions in millimetres Maximum offsetaMaximum offset Maximum offset Nominal size h1h2h3DN 25 0,2 0,15 0,2 DN 50 0,4 0,15 0,25 DN 80 0,6 0,2 0,3 DN 100 0,8 0,3 0,4 DN 125 1,0 0,45 0,5 DN 150 1,2 0,6 0,6 DN 200 1,2 0,6 0,6 aOver a maximum range of 180. The required quality level as in DIN
22、 EN ISO 5817 shall be specified. The following additional requirements shall apply for pipes: Pipes should originate from the same lot and batch. Any misalignment of pipes resulting from ovality and other dimensional deviations of the products shall be rectified prior to welding. 4.3 Testing Endoscopic or videoscopic testing and measurement on test pieces manufactured under realistic conditions should be used for checking the quality of welds.
