1、February 2013 English price group 12No 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 23.040.60!%#%d“2000265www.din.d
2、eDDIN 11851Stainless steel fittings for the food and chemical industry Screw pipe connections for expanding and welding,English translation of DIN 11851:2013-02Armaturen aus nichtrostendem Stahl fr Lebensmittel und Chemie Rohrverschraubungen zum Einwalzen und Stumpfschweien,Englische bersetzung von
3、DIN 11851:2013-02Robinetterie en acier inoxydable pour lindustrie alimentaire et chimique Raccords composition pour implementation par laminage et pour soudage,Traduction anglaise de DIN 11851:2013-02SupersedesDIN 11851:2011-04www.beuth.deDocument comprises 20 pagesTranslation by DIN-Sprachendienst.
4、In case of doubt, the German-language original shall be considered authoritative.05.13 DIN 11851:2013-02 2 A comma is used as the decimal marker. Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Dimensions, designation 4 3.1 General 4 3.2 Threaded couplings .5 3.2.1 Expanded-type thread
5、ed coupling (W) 5 3.2.2 Welded-type threaded coupling .5 3.3 Individual parts 8 4 Materials 17 5 Design 17 6 Requirements for elastomers 18 7 Marking 18 8 Documentation, certificates . 18 Annex A (informative) Information on forming connections by expanding tubes as in DIN 11850 into Type C male par
6、ts and Type D liners as in DIN 11851 19 Annex B (informative) Information on requirements for elastomers . 20 B.1 Additional approvals/compliance . 20 B.2 Hardness measurement . 20 B.3 Further physical characteristics . 20 DIN 11851:2013-02 3 Foreword This document has been prepared by Working Commi
7、ttee NA 003-01-14 AA Armaturen fr die Lebensmittel-industrie of the Normenausschuss Armaturen (NAA) (Valves Standards Committee). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying an
8、y or all such patent rights. Amendments This standard differs from DIN 11851:1998-11 and DIN 11887:1998-11 as follows: a) the title of the standard has been changed; b) the Clause “Materials” now includes steel grades X2CrNi18-9 (material no. 1.4307) and X2CrNiMo17-12-3 (material no. 1.4432); c) the
9、 standard has been technically and editorially fully revised; d) in Table 4, for size DN 10, dimension n has been changed from 6 to 7; e) DIN 11887 has been incorporated into the standard; f) material HNBR is now included; g) blind couplings are now included in the standard. This standard differs fr
10、om DIN 11851:2011-04 as follows: a) in Table 5 the value “4,5 0,20” in the column for s also applies to nominal size DN 20. Previous editions DIN Land 851 = DIN 11851: 1936-10 DIN 11851: 1954-03, 1964-01, 1985-07, 1989-05, 1998-11 DIN 11887: 1968-07, 1976-11, 1985-07, 1998-11 DIN 11851-1: 1976-11 DI
11、N 11851-2: 1976-11 DIN 11851: 2011-04 DIN 11851:2013-02 4 1 Scope This standard applies to the dimensions, design and materials for threaded couplings for nominal sizes DN 10 to DN 100 for expanding, and nominal sizes DN 10 to DN 150 for butt welding to tubes as in DIN 11850. 2 Normative references
12、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 amendments) applies. DIN 405-1, General purpose knuckle threads Part 1
13、: Profiles, nominal sizes DIN 405-2, General purpose knuckle threads Part 2: Deviations and tolerances DIN 11850, Stainless steel tubes for the food and chemical industries Dimensions, materials DIN 53505, Testing of rubber Shore A and Shore D hardness test DIN EN 10088-1, Stainless steels Part 1: L
14、ist of stainless steels DIN EN 10088-3, Stainless steels Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes DIN EN 10204, Metallic products Types of inspection documents DIN EN 10254, Ste
15、el closed die forgings General technical delivery conditions DIN EN ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture DIN ISO 1629, Rubber and latices Nomenclature DIN ISO 2768-1, General tolerances Tolerance
16、s for linear and angular dimensions without individual tolerance indications DIN ISO 13715, Technical drawings Edges of undefined shape Vocabulary and indication on drawings Code of Federal Regulations, Title 21, Sec. 177.2600, Rubber articles intended for repeated use1)3 Dimensions, designation 3.1
17、 General All dimensions are in mm, where not otherwise stated. General tolerances: DIN ISO 2768-1 m. Threaded couplings need not correspond to the illustrated designs, solely the specified dimensions are to be observed. 1) Obtainable from: Superintendent of Documents, Government Printing Office, Was
18、hington DC 28402 (USA). Also available online for free. DIN 11851:2013-02 5 3.2 Threaded couplings 3.2.1 Expanded-type threaded coupling (W) See Table 1 for parts list, see Table 2 for dimensions of couplings. Key a Tube Figure 1 Expanded-type threaded coupling Designation of a complete expanded-typ
19、e threaded coupling (W) for an external tube diameter = 52 mm and a wall thickness = 1 mm; item nos. 1, 2 and 7 of stainless steel, material no. 1.4301, item no. 8 of nitrile butadiene rubber (NBR): Threaded coupling DIN 11851 W 52 1 1.4301 NBR 3.2.2 Welded-type threaded coupling 3.2.2.1 Standard de
20、sign (S) See Table 1 for parts list, see Table 2 for dimensions of couplings. DIN 11851:2013-02 6 Key a Tube Figure 2 Welded-type threaded coupling Designation of a complete welded-type threaded coupling, standard design (S) for an external tube diameter = 53 mm and wall thickness = 1,5 mm; item nos
21、. 3, 4 and 7 of stainless steel, material no. 1.4301, item no. 8 of nitrile butadiene rubber (NBR): Threaded coupling DIN 11851 S 53 1,5 1.4301 NBR 3.2.2.2 Short design (SK) See Table 1 for parts list, see Table 2 for dimensions of couplings. Key a Tube Figure 3 Welded-type threaded coupling, short
22、design DIN 11851:2013-02 7 Designation of a complete welded-type threaded coupling, short design (SK) for an external tube diameter = 53 mm and wall thickness = 1,5 mm; item nos. 5, 6 and 7 of stainless steel, material no. 1.4301, item no. 8 of nitrile butadiene rubber (NBR: Threaded coupling DIN 11
23、851 SK 53 1,5 1.4301 NBR Table 1 Parts list Item no. Designation Type Symbol for design Remarks 1 Expanded male part C W Couplings of nominal sizes DN 10 to DN 100 are joined to the pipe by expansion 2 Expanded liner D 3 Welded male part SC S Couplings of nominal sizes DN 10 to DN 150 are joined to
24、the pipe by butt welding 4 Welded liner SD 5 Welded male part SKC SK 6 Welded liner SKD 7 Nut F 8 Gasket G Table 2 Dimensions of threaded couplings Dimensions in millimetres Nominal size Allowable pressure Diameter Overall length Associated tube dimensions as in DIN 11850 Designs Design W and S SK d
25、8l1l2DN MPa (bar)a for expanding for butt welding 10 4 (40) 38 35 27 12 1 13 1,5 15 44 18 1 19 1,5 20 54 37 22 1 23 1,5 25 63 45 31 28 1 29 1,5 32 70 51 34 1 35 1,5 40 78 53 40 1 41 1,5 50 2,5 (25) 92 57 33 52 1 53 1,5 65 112 65 35 70 2 70 2 80 127 75 85 2 85 2 100 148 89 41 104 2 104 2 125 1,6 (16)
26、 178 70 49 129 2 150 210 76 56 154 2 aThese pressures in MPa can be used up to 140 C provided suitable sealing materials are used. DIN 11851:2013-02 8 3.3 Individual parts Dimensions for male parts and liners (Types C, D, SC, SD, SKC, and SKD) are given in Table 3. Dimensions for nuts (Type F) are g
27、iven in Table 4. Dimensions for gaskets (Type G) are given in Table 5. Key a Expansion grooves Key a Expansion grooves Figure 4 Type C expanded male part, Item no. 1 in Figure 1 Figure 5 Type D expanded liner, Item no. 2 in Figure 1 Designation of a Type C expanded male part for an external tube dia
28、meter = 52 mm and a wall thickness = 1 mm of stainless steel, material no. 1.4301: Expanded male part DIN 11851 C 52 1 1.4301 Designation of a Type D expanded liner for an external tube diameter = 52 mm and a wall thickness = 1 mm of stainless steel, material no. 1.4301: Expanded liner DIN 11851 D 5
29、2 1 1.4301 DIN 11851:2013-02 9 Figure 6 Type SC welded male part, item no. 3 in Figure 2 Figure 7 Type SD welded liner, item no. 4 in Figure 2 Designation of a Type SC welded male part for an external tube diameter = 53 mm and a wall thickness = 1,5 mm of stainless steel, material no. 1.4301: Welded
30、 male part DIN 11851 SC 53 1,5 1.4301 Designation of a Type SD welded liner for an external tube diameter = 53 mm and a wall thickness = 1,5 mm of stainless steel, material no. 1.4301: Welded liner DIN 11851 SD 53 1,5 1.4301 DIN 11851:2013-02 10 Figure 8 Type SKC welded male part, item no. 5 in Figu
31、re 3 Figure 9 Type SKD welded liner, item no. 6 in Figure 3 Designation of a Type SKC welded male part for an external tube diameter = 53 mm and a wall thickness = 1,5 mm of stainless steel, material no. 1.4301: Welded male part DIN 11851 SKC 53 1,5 1.4301 Designation of a Type SKD welded liner for
32、an external tube diameter = 53 mm and a wall thickness = 1,5 mm of stainless steel, material no. 1.4301: Welded liner DIN 11851 SKD 53 1,5 1.4301 DIN 11851:2013-02 11 Figure 10 Type C blind male part, DN 50 of stainless steel, material no. 1.4301 Designation of a Type C blind male part, DN 50 of sta
33、inless steel, material no. 1.4301: Blind male part DIN 11851-C-DN 50-1.4301 Figure 11 Type D blind liner, DN 50 of stainless steel, material no. 1.4301 Designation of a Type D blind liner, DN 50 of stainless steel, material no. 1.4301: Blind liner DIN 11851-D-DN 50-1.4301 DIN 11851:2013-02 12 Table
34、3 Dimensions of male parts and liners Dimensions in millimetres Nom. size Associated tubes as in DIN 11850 Type Thread as in DIN 405-1 a b c d1a d2d3d4d5bd6d7d8d9e f g h i k l m n SW r1r2t d10DN +0,2 0 Toler-ance 0 0,3 +0,2 0 0 0,2 +0,2 0 max. min. 10 12 1 C 12 12 21 10 12,2 +0,1 0 18 Rd 28 1812 19,
35、8 11 22,5 6 3 4 21 9 17 1 1,6 7 22 D 17 13 1,5 SC 21 13 1,6 SD 18 17 3 SKC 17 SKD 13 15 18 1 C 12 12 21 16 18,2 +0,1 0 24 Rd 34 1818 25,8 17 28,5 1 D 17 19 1,5 SC 21 19 1,6 SD 24 17 3 SKC 17 SKD 13 20 22 1 C 12 14 24 20 22,2 +0,1 0 30 Rd 44 1623 32,8 21 36,5 8 6 24 11 1 D 18 23 1,5 SC 24 23 SD 30 18
36、 3 SKC 19 SKD 13 25 28 1 C 15 14 29 26 28,2 +0,1 0 35 Rd 52 1630 39,8 27 44 10 3,5 7 13 27 1,6 2,5 8 40 D 22 29 1,5 SC 29 29 2,5 SD 35 22 3 SKC 22 SKD 15 DIN 11851:2013-02 13 Table 3 (continued) Nom. size Associated tubes as in DIN 11850 Type Thread as in DIN 405-1 a b c d1a d2d3d4d5bd6d7d8d9e f g h
37、 i k l m n SW r1r2t d10DN +0,2 0 Toler-ance 0 0,3 +0,2 0 0 0,2 +0,2 0 max. min. 32 34 1 C 18 14 32 32 34,2 +0,1 0 41 Rd 58 1636 45,8 33 50 10 3,5 7 24 13 27 1,6 2,5 8 40 D 25 35 1,5 SC 32 35 2,5 SD 41 25 3 SKC 22 SKD 15 40 40 1 C 20 14 33 38 40,3 +0,1 0 48 Rd 65 1642 51,8 39 56 10 1,6 D 26 41 1,5 SC
38、 33 41 2,5 SD 48 26 3 SKC 22 SKD 15 50 52 1 C 22 14 35 50 52,3 +0,1 0 61 Rd 78 1654 63,8 51 68,5 11 14 1,6 D 28 53 1,5 SC 35 53 2,5 SD 61 28 3 SKC 23 SKD 16 65 70 2 C 25 16 40 66 70,4 +0,2 0 79 Rd 95 1671 80,8 67 86 12 8 28 16 32 2,5 4 48 D 32 SC 40 70 4 SD 79 32 4 SKC 25 SKD 17 DIN 11851:2013-02 14
39、 Table 3 (continued) Nom. size Associated tubes as in DIN 11850 Type Thread as in DIN 405-1 a b c d1a d2d3d4d5bd6d7d8d9e f g h i k l m n SW r1r2t d10DN +0,2 0 Toler-ance 0 0,3 +0,2 0 0 0,2 +0,2 0 max. min. 80 85 2 C 28 20 45 81 85,4 +0,2 0 93 Rd 110 1485 94,8 82 100 12 3,5 8 30 16 32 2,5 4 8 48 D 37
40、 SC 45 85 4 SD 93 37 4 SKC 25 SKD 17 100 104 2 C 35 20 54 100 105 +0,2 0 114 Rd 130 14104 113,8 101 121 15 4 10 20 2,5 D 44 SC 54 104 SD 114 44 5 SKC 30 SKD 20 125 129 2 SC 24 46 125 129 Rd 160 14130 141,8 126 150 17 4,5 12 36 22 41 2,5 10 55 SD 137 34 5 150 154 2 SC 28 50 150 154 Rd 190 14155 166,8
41、 151 176 18 13 40 24 SD 163 37 6 aFor stainless steel tubes as in DIN 11850 bTolerance class 7e as in DIN 405-2 DIN 11851:2013-02 15 Thread undercuts may be dispensed with if this does not impair the functioning of the coupling nut. Number of grooves as in Table 4 Figure 12 Type F nut, item no. 7 in
42、 Figure 1, Figure 2 and Figure 3 Designation of a Type F coupling nut, nominal size DN 50, of stainless steel, material no. 1.4301: Coupling nut DIN 11851 F 50 1.4301 DIN 11851:2013-02 16 Table 4 Dimensions of nuts Dimensions in millimetres Nominal size Thread as in DIN 405-1 Number of grooves d6d7d
43、8k m n u t d5a DN 0,30+10 Rd 28 1819 33 38 18 15 7 4 3 4 15 Rd 34 1825 38 44 20 Rd 44 1631 48 54 20 17 5 25 Rd 52 1636 56 63 21 18 8 3,5 32 Rd 58 1642 62 70 4 40 Rd 65 1649 70 78 10 50 Rd 78 1662 84 92 22 19 65 Rd 95 1680 102 112 25 21 5 6 80 Rd 110 94 117 127 29 25 6 100 Rd 130 115 138 148 31 26 12
44、 125 Rd 160 138 168 178 35 30 7 150 Rd 190 164 200 210 40 34 aTolerance class 7H as in DIN 405-2 Figure 13 Type G gasket, item no. 8 in Figure 1, Figure 2 and Figure 3 Designation of a Type G gasket, nominal size DN 50 of nitrile butadiene rubber (NBR): Gasket DIN 11851 G 50 NBR DIN 11851:2013-02 17 Table 5 Dimensions of gaskets Dimensions in millimetres Nominal size DN d12p s r310 12 0,20 4 0,10 4,5 0,20 2,0 0,10 15 18 0,25 20 23 0,25 5 0,15 2,5 0,15 25 30 0,35 5 0,20 32 36 0,35 40 42 0,40 50 54 0,40 65 71 0,5
