1、February 2009DEUTSCHE NORM Translation by DIN-Sprachendienst.English price group 7No 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 23.040.01!$XyG“1538636www.din.deDDIN 2430-1Piping for pigging systems Part 1: Straight pipes and elbowsRohrleitungen fr Molchanlagen Teil 1: Rohre und RohrbgenSupersedesDIN 2430-1:2001-09www.beuth.deDocument comprises 10 pagesIn case of doubt, the German-language original should be co
3、nsulted as the authoritative text.DIN 2430-1:2009-02 2 Contents Page Foreword. 3 1 Scope . 4 2 Normative references . 4 3 Straight pipes 5 3.1 Dimensions and designation. 5 3.2 Material 6 3.3 Finish and surface condition. 6 3.3.1 Finish . 6 3.3.2 Surface condition 6 3.3.3 Pipe ends. 6 3.4 Manufactur
4、ed lengths 7 3.5 Testing . 7 3.6 Marking 7 3.7 Materials testing certificate . 7 4 Elbows . 7 4.1 General. 7 4.2 Bend radii of straight pipes and butt-welding elbows 8 4.3 Elbow ends 8 4.4 Testing . 8 4.5 Marking 9 4.6 Designation . 9 4.7 Materials testing certificate . 9 Annex A (informative) Compa
5、rison of materials . 10 .DIN 2430-1:2009-02 3 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). Annex A is informative. The D
6、IN 2430 series of standards comprises: Part 1: Straight pipes and elbows Part 2: Pipe joints Part 3: Trial pigging (prior to commissioning) Amendments This standard differs from DIN 2430-1:2001-09 as follows: a) The range of nominal sizes has been extended to include DN 125 and DN 200. b) Roughness
7、measurement to determine Rain accordance with DIN EN ISO 4287 and DIN EN ISO 4288 has been specified. c) Provision of materials testing certificates is now specified. Previous editions DIN 2430-1: 1924-09, 1929-12, 2001-09 DIN 2430-1:2009-02 4 1 Scope This standard specifies requirements and methods
8、 of test for straight pipes and elbows as part of piggable piping 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 referenc
9、ed document (including any amendments) applies. DIN 2605-11), Steel butt-welding pipe fittings Elbows and bends with reduced pressure factor DIN 26092), Steel butt-welding pipe fittings Technical delivery conditions DIN EN 10028-7, Flat products made of steels for pressure purposes Part 7: Stainless
10、 steels DIN EN 10204, Metallic products Types of inspection documents DIN EN 10217-7:2005, Welded steel tubes for pressure purposes Technical delivery conditions Part 7: Stainless steel tubes DIN EN 10259, Cold-rolled stainless steel wide strip and plate/sheet Tolerances on dimensions and shape DIN
11、EN ISO 4287, GPS Surface texture: Profile method Terms, definitions and surface texture parameters DIN EN ISO 4288, GPS Surface texture: Profile method Rules and procedures for the assessment of surface texture DIN EN ISO 9692-1, Welding and allied processes Recommendations for joint preparation Par
12、t 1: Manual metal-arc welding, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steels DIN ISO 13715, Technical drawings Edges of undefined shape Vocabulary and indication on drawings AD 2000-Merkblatt W 2 ASTM A 240/A 240M)3), Heat-Resisting Chromium and Chromium-Nickel
13、Stainless Steel Plate, Sheet and Strip for Pressure Vessels 1) Will be superseded by DIN EN 10253-4, which is currently at draft stage. 2) Will be superseded by DIN EN 10253-4, which is currently at draft stage. 3) Obtainable from Beuth Verlag GmbH, 10772 Berlin, Germany. DIN 2430-1:2009-02 5 3 Stra
14、ight pipes 3.1 Dimensions and designation Piggable straight pipes shall have dimensions as specified in Table 1. Designation of a straight pipe of nominal size DN 50 (50 mm), made of steel of material number 1.4307, with type W2Ab finish, edge not planed: Pipe DIN 2430 50 W2Ab 1.4307 Designation of
15、a straight pipe of nominal size DN 50, made of steel of material number 1.4307, with type W2Ab finish, edge form complying with DIN EN ISO 9692-1, reference number 1.2.1 (planed): Pipe DIN 2430 50 W2Ab 1.4307 1.2.1 Table 1 Pipe dimensions and tolerances Dimensions in millimetres Limit deviations for
16、 inside diameter diNominal size DN Wall thickness as in DIN EN 10259 Inside diameter including ovality as calculated from circumferenceaMaximum excessive penetration for inside longitudinal weld h (see Figure 1) 25 2,0 0,09 29,7 0,15 0,1 0,04 50 2,9 0,11 54,5 0,25 0,1 0,04 80 3,2 0,13 82,5 0,3 0,15
17、0,05 100 3,6 0,13 107,1 0,35 0,2 0,09 125 4,0 0,14 131,7 0,55 0,23 0,17 150 4,5 0,14 159,3 0,75 0,25 0,25 200 4,5 0,14 206,5 1,0 0,3 0,25 adi= sU2a(1) where diis the inside diameter, Uais the external circumference, s is the actual wall thickness The deviation from straightness shall not exceed 0,15
18、 % of the as-delivered pipe length (corresponding to 3 mm per metre of pipe length . )DIN 2430-1:2009-02 6 Key 1 Smooth transitions, no scores or sharp edges rmin= 2 mm minimum Figure 1 Excessive penetration 3.2 Material Pipes shall be made of steel of the material numbers specified in Table 2, othe
19、r materials conforming to DIN EN 10028-7 being permitted subject to agreement. Table 2 Standard materials Material number as in DIN EN 10028-7 Equivalent material as in ASTM A 240/A 240 Ma 1.4307 AISI 304L 1.4541 AISI 321 1.4404 AISI 316L 1.4571 AISI 316Ti aSee Annex A. 3.3 Finish and surface condit
20、ion 3.3.1 Finish Pipes shall have a type W2Ab, W2Rb, WCAb or WCRb finish as in DIN EN 10217-7:2005-05, Table 2. 3.3.2 Surface condition The roughness, Ra, shall be 0,8 m for the pipe inside surface and 1,6 m for the weld. Raas defined in DIN EN ISO 4287 shall be measured as specified in DIN EN ISO 4
21、288, axial measurements being carried out on at least every twentieth pipe length. All measurements shall be taken at a distance of 5 mm from the pipe end and documented in the inspection certificate. 3.3.3 Pipe ends 3.3.3.1 Standard design Pipe ends shall be cut without planing. DIN 2430-1:2009-02
22、7 3.3.3.2 Design for orbital friction welding Subject to agreement, pipes intended for orbital friction welding shall be prepared for welding as in DIN EN ISO 9692-1 (indicating the respective reference number). Tolerance Q as in 4.7.2.5 and Table 5 of DIN 2609:1991-02 shall be 0,5 % of the referenc
23、e dimension (with a maximum of 0,5 mm). The limit deviations for the edges of workpieces shall be 05,003,0+as in DIN ISO 13715. 3.4 Manufactured lengths Pipes shall be manufactured in (standard) lengths of 6 m or 12 m, with other lengths being subject to agree-ment. 3.5 Testing Pipes complying with
24、this standard shall be tested in accordance with AD 2000 Merkblatt W2. For additional roughness measurements 3.3.2 shall apply. Stress analysis shall be carried out for resistance to static pressure and, where relevant, to dynamic pressure. 3.6 Marking Marking shall be as in DIN EN 10217-7:2005-05,
25、clause 12. 3.7 Materials testing certificate Compliance of pipes with the requirements of the order shall be verified by means of an inspection certificate 3.1 as in DIN EN 10204. 4 Elbows 4.1 General Elbows shall be type 5 elbows as in DIN 2605-1, of any bend angle up to 90. Larger angles are permi
26、tted subject to agreement. Elbows shall be manufactured from longitudinally welded straight pipes as in clause 3, originating from the same lot where possible. Since measurement of the pipe inside diameter at the curvature is very difficult, compliance with the tolerances shall be checked on the bas
27、is of the outside diameter. DIN 2430-1:2009-02 8 4.2 Bend radii of straight pipes and butt-welding elbows Dimensions and tolerances shall be as given in Table 3. Table 3 Dimensions and tolerances Minimum bend radius as in DIN 2605-1 (type 5 oder higher) Nominal size DN mm Relative limit deviation dr
28、elat curvaturea % Measurement based on actual pipe outside diameter Testing as in 4.4 b) 25 72,5 + 0,5 bis 1,0 50 135 + 0,5 bis 1,0 80 205 + 0,5 bis 1,0 100 270 + 0,5 bis 1,5 125 330 + 0,5 bis 2,0 150 390 + 0,5 bis 2,0 200 510 + 0,5 bis 2,5 adrel= %in100rarabadddwhere drelis the relative limit devia
29、tion da bis the elbow outside diameter da ris the pipe outside diameter Wall thickness reduction: not exceeding 20 % Minimum straight length: 150/150 4.3 Elbow ends See 3.3.3.2. 4.4 Testing The limit deviations given in Table 3 refer to the actual pipe dimensions as delivered. a) The dimensions of p
30、ipes for bending shall be checked using the statistical mean outside diameter for reference purposes. b) The dimensions of elbows shall be checked by determining the maximum outside diameter along the whole length of the elbow (including any ovality). The measurement results shall be recorded in a t
31、est report. DIN 2430-1:2009-02 9 4.5 Marking Marking shall be as in DIN 2609:1991-02, clause 6 (does not apply for bend radii). 4.6 Designation Designation of a piggable elbow of nominal size DN 50, 90 angle, made of steel of material number 1.4307, with type W2Ab finish, edge form complying with DI
32、N EN ISO 9692-1, reference number 1.2.1 (planed): Elbow DIN 2430 50 90 W2Ab 1.4307 1.2.1 4.7 Materials testing certificate Compliance of elbows with the requirements of the order shall be verified by means of a test report 2.2 as in DIN EN 10204. DIN 2430-1:2009-02 10 Annex A (informative) Compariso
33、n of materials Table A.1 Comparison of materials Austenitic steel, cold rolled Proportions by mass, in % Material-number Relevant standard, steel name given in brackets C Si Mn Cr Mo Ni Other chemical elements 0,2 % proof stress (N/mm2) - transverse1 % proof stress(N/mm2) - transverse Tensilestrengt
34、h(N/mm2) Resistance tointer-kristallinecorrosion Density(g/cm3) Remarks 1.4541 DIN EN 10028-7 (X 6 CrNiTi 18-10) 0,08 1,0 2,0 17,019,0 9,012,0 Ti 5 % C 220 250 520 M 720 yes 7,95 1.4306 DIN EN 10028-7 (X 2 CrNi 19-11) 0,03 1,0 2,0 18,020,0 10,012,0 220 250 520 670 yes 7,95 1.4307 DIN EN 10028-7 (X 2
35、 CrNi 18-9) 0,03 1,0 2,0 17,519,5 8,010,0 220 250 520 670 yes 7,95 304L ASTM A 240 0,03 0,75 2,0 18,020,0 8,012,0 170 485 yes 7,95 a 1.4571 DIN EN 10028-7 (X 6 CrNiMo 17-12-2) 0,08 1,0 2,0 16,518,52,02,510,513,5 Ti 5 % C 240 270 540 690 yes 7,95 1.4404 DIN EN 10028-7 (X 2 CrNiMo 17-12-2) 0,03 1,0 2,0 16,518,52,02,510,013,0 240 270 530 680 yes 7,95 316L ASTM A 240 0,03 0,75 2,0 16,018,02,03,010,014,0 170 485 yes 7,95 a aRegarding the mechanical properties, no differentiation is made between cold and hot rolled materials in the ASTM Standard.
