1、September 2007DEUTSCHE NORM English price group 8No 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 (DIN-Normen).ICS 23.040.10!$OEb“144
2、3463www.din.deDDIN 28180Seamless steel tubes for tubular heat exchangers Dimensions and materialsNahtlose Stahlrohre fr Rohrbndel-Wrmeaustauscher Mae und WerkstoffeSupersedesDIN 28180:1985-08www.beuth.deIn case of doubt, the German-language original should be consulted as the authoritative text.Tran
3、slation by DIN-Sprachendienst.Document comprises 10 pagesDIN 28180:2007-09 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Dimensions, masses per unit length, and tolerances5 3.1 Outside diameters and wall thicknesses, masses per unit length.5 3.2 Lengths .5 3.3 Tolerances6 4 Material
4、s .8 5 Designation 8 6 Order details.9 Bibliography. 10 DIN 28180:2007-09 3 Foreword This standard has been developed by Technical Committee NA 012-00-01-02 UA Anbauteile of the Normen-ausschuss Chemischer Apparatebau (FNCA) (Process Engineering Standards Committee) of DIN. Amendments This standard
5、differs from DIN 28180:1985-08 as follows: a) The title of the standard has been changed. b) Examples of designations and orders have been modified. c) d) Steel grade St 35.8 (1.0305) has been deleted and replaced by steel grade P235GH (1.0345). e) Steel grade TTSt 35 N (1.0356) has been deleted and
6、 replaced by steel grade P215NL (1.0451). f) The steel name “15 Mo 3” for material number 1.5415 has been changed to “16Mo3” (the material number remains unchanged). g) The standard has been editorially revised. Previous editions DIN 28180: 1953-11, 1964-12, 1985-08 Steel grade St 37.0 (1.0254) has
7、been deleted. DIN 28180:2007-09 4 1 Scope This standard applies to straight plain-end seamless tubes made from non-alloy, alloy and stainless steels intended for use in tubular heat exchangers, which are predominantly used in process engineering. This standard does not apply to steel tubes intended
8、for exposure to flame. Technical delivery conditions shall be as specified in the standards listed in Table 8, with the exception of the dimensions and tolerances specified in clause 3 of the present standard. NOTE The outside diameters, wall thicknesses, and masses per unit length specified here co
9、nform to International Standard ISO 6759:1980. 2 Normative references The following referenced 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
10、amendments) applies. DIN EN 10204, Metallic products Types of inspection documents DIN EN 10216-2, Seamless steel tubes for pressure purposes Technical delivery conditions Part 2: Non alloy and alloy steel tubes with specified elevated temperature properties DIN EN 10216-4, Seamless steel tubes for
11、pressure purposes Technical delivery conditions Part 4: Non-alloy and alloy steel tubes with specified low temperature properties DIN EN 10216-5, Seamless steel tubes for pressure purposes Technical delivery conditions Part 5: Stainless steel tubes AD 2000-Merkblatt W 21), Austenitic and austenitic-
12、ferritic steels AD 2000-Merkblatt W 41), Tubes made from non-alloy and alloy steels 1) Obtainable from: Beuth Verlag GmbH, 10772 Berlin (Street address: Burggrafenstrae 6, 10787 Berlin). DIN 28180:2007-09 5 3 Dimensions, masses per unit length, and tolerances 3.1 Outside diameters and wall thickness
13、es, masses per unit length Outside diameters and wall thicknesses of tubes shall be as specified in Tables 1 and 2. Table 1 Non-alloy and alloy steel tubes Dimensions in millimetres Wall thickness 1,2 1,6 2,0 2,6 3,2 Outside diameter Mass kg/m 16 0,44 0,57 0,69 20 0,73 0,89 1,12 25 0,92 1,13 1,44 1,
14、72 30 1,12 1,38 1,76 2,11 38 1,78 2,27 2,75 Table 2 Stainless steel tubes Dimensions in millimetres Wall thickness 1,2 1,6 2,0 2,6 3,2 Outside diameter Mass kg/m 16 0,45 0,58 0,70 20 0,56 0,74 0,90 1,14 25 0,94 1,15 1,46 1,75 30 1,14 1,40 1,79 2,14 38 1,46 1,81 2,30 2,79 3.2 Lengths The tube length
15、shall be selected from the exact lengths specified in Table 3. Lengths printed in bold are preferred. Other lengths may be agreed at the time of ordering. Table 3 Tube lengths Dimensions in millimetres Tube lengths 500 750 1 000 1 500 2 000 2 500 3 000 4 000 5 000 6 000 8 000 DIN 28180:2007-09 6 3.3
16、 Tolerances 3.3.1 Tolerances on outside diameter The tolerances specified for outside diameters take out-of-roundness into consideration. The tolerance classes for the outside diameter as in this standard shall be specified at the time of ordering. Table 4 gives outside diameter tolerances for non-a
17、lloy and alloy steel tubes and Table 5 gives outside diameter tolerances for stainless steel tubes. Table 4 Tolerances on the outside diameter of non-alloy and alloy steel tubes Dimensions in millimetres Tolerance Outside diameter Tolerance class 1 Tolerance class 2 Tolerance class 3a16 20 25 30 0,0
18、8 38 0,15 Not applicable 0,50 aNot suitable for tube-to-tubesheet rolling. Table 5 Tolerances on the outside diameter of stainless steel tubes Dimensions in millimetres Tolerance Outside diameter Tolerance class 1 Tolerance class 2a16 20 0,10 25 0,12 30 0,15 0,30 38 0,20 0,40 aNot suitable for tube-
19、to-tubesheet rolling. DIN 28180:2007-09 7 3.3.2 Tolerances on wall thickness The tolerances specified for wall thicknesses take eccentricity into consideration. Table 6 gives wall thickness tolerances for all types of tubes covered by this standard. Table 6 Tolerances on wall thickness Tolerance on
20、wall thickness Tube outside diameter 2 mm 2 mm Tolerance class 1 Tolerance class 2 0,20 mm 10 % Tolerance class 3 0,20 mm %15%10+3.3.3 Tolerances on exact length Table 7 gives tolerances for the exact length of all types of tubes covered by this standard. Table 7 Tolerances on exact length Dimension
21、s in millimetres Length Tolerance 5 000 50+ 5 000 10 000 100+ 10 000 to be agreed 3.3.4 Straightness Tubes shall appear straight to the eye. Particular requirements regarding straightness may be agreed. 3.3.5 Finish of tube ends Tube ends shall be square cut and be free from burrs. DIN 28180:2007-09
22、 8 4 Materials Seamless steel tubes for tubular heat exchangers shall preferably be made from the steel grades listed in Table 8. Technical delivery conditions shall be as specified in the standards listed in Table 8, with the exception of the dimensions and tolerances specified in clause 3 of the p
23、resent standard. Table 8 Steel grades and technical delivery conditions Steel grade Group Steel name MaterialnumberTechnical delivery conditions P235GH 1.0345 DIN EN 10216-2 Non-alloy steel tubes P215NL 1.0451 DIN EN 10216-4 16Mo3 1.5415 Alloy steel tubes 13CrMo4-4 1.7335 DIN EN 10216-2 Tolerance cl
24、ass 1 or 3 Test category 1 X5CrNi18-10 1.4301 X5CrNiMo17-12-2 1.4401 X6CrNiTi18-10 1.4541 Stainless steel tubes X6CrNiMoTi17-12-2 1.4571 DIN EN 10216-5 Tolerance class 1 or 2 Test category 2 Preferably delivery condition CFD or CFA 5 Designation The designation of tubes complying with this standard
25、shall include the following information in the order given: The term “Tube”; this standard number (DIN 28180); characteristic tube dimensions: outside diameter wall thickness exact length (see Table 3 for lengths); the tolerance class (see Tables 4 and 5); the DIN Standard giving the relevant techni
26、cal delivery conditions (see Table 8), e.g. DIN EN 10216-2; the steel name or material number (see Table 8); the symbol for the delivery condition, for tubes as in DIN EN 10216-5 (see Table 8). EXAMPLE 1 Designation of a seamless tube with an outside diameter of 25 mm, a wall thickness of 2,0 mm and
27、 an exact length of 5 000 mm, tolerance class 1 (TK1), complying with the technical delivery conditions specified in DIN EN 10216-2, made of steel grade P235GH (material number 1.0345): Tube DIN 28180 25 2,0 5 000 TK1 DIN EN 10216-2 P235GH EXAMPLE 2 Designation of a seamless tube with an outside dia
28、meter of 25 mm, a wall thickness of 2,0 mm and an exact length of 5 000 mm, tolerance class 1 (TK1), complying with the technical delivery conditions specified in DIN EN 10216-5, made of steel grade X6CrNiMoTi17-12-2 (material number 1.4571) and in delivery condition CFD: Tube DIN 28180 25 2,0 5 000
29、 TK1 DIN EN 10216-5 1.4571 CFD DIN 28180:2007-09 9 6 Order details In addition to the standard designation as in clause 5, each order shall always give the desired quantity (e.g. the number of units or total length to be supplied), for tubes as in DIN EN 10216-2 the test category, the inspection doc
30、ument as in DIN EN 10204 describing the type of material testing, and where applicable, any additional technical rules which may apply, such as the AD 2000-Merkbltter. Examples of an order: 2 000 units of Tube DIN 28180 25 2,0 5 000 TK1 DIN EN 10216-2 P235GH Test category 1 Inspection certificate DI
31、N EN 10204 3.1 AD 2000-Merkblatt W 4 or 2 000 units of Tube DIN 28180 25 2,0 5 000 TK1 DIN EN 10216-5 1.4571 CFD Test category 2 Inspection certificate DIN EN 10204 3.1 AD 2000-Merkblatt W 2 DIN 28180:2007-09 10 Bibliography DIN 28181, Welded steel tubes for tubular heat exchangers Dimensions and materials DIN 28182, Tubular heat exchangers Tube pitches, diameter of bores in tube sheets, baffles and support plates ISO 6759:1980, Seamless steel tubes for heat exchangers
