1、Designation: A 587 96 (Reapproved 2005)Standard Specification forElectric-Resistance-Welded Low-Carbon Steel Pipe for theChemical Industry1This standard is issued under the fixed designation A 587; the number immediately following the designation indicates the year oforiginal adoption or, in the cas
2、e of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification2covers electric-resistance-weldedlow-carbon steel pipe intended for use
3、 as process lines.1.2 Pipe ordered under this specification shall be suitable forsevere forming operations involving flanging in all sizes andbending to close radii up to and including NPS 4.1.3 This specification covers NPS12 through 10, plusadditional sizes. The corresponding outside diameters and
4、 wallthicknesses for NPS12 through 10 are listed in Table 1,asarethe dimensions for the additional sizes.NOTE 1The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this standard for such traditional terms as “nominaldiameter,” “size,” and “nominal size.”1.4 The values stated i
5、n inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 The following precautionary caveat pertains only to thetest method portion, Sections 6, 12, and 13, of t
6、his specifica-tion: This standard does not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.
7、Referenced Documents2.1 ASTM Standards:3A 53/A 53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 530/A 530M Specification for General Requirements forSpecialized Carbon and Alloy Steel
8、PipeA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsE 213 Practice for Ultrasonic Examination of Metal Pipeand TubingE 273 Practice for Ultrasonic Examination of the WeldZone of Welded Pipe and TubingE 309 Practice for Eddy-Current Examination of Steel Tu-bular P
9、roducts Using Magnetic SaturationE 570 Practice for Flux Leakage Examination of Ferromag-netic Steel Tubular Products3. Ordering Information3.1 Orders for material under this specification shouldinclude the following as required to describe the desiredmaterial adequately:3.1.1 Quantity (feet or numb
10、er of pieces),3.1.2 Name of material (electric-resistance-welded steelpipe),3.1.3 Size (NPS or outside diameter and wall thickness),3.1.4 Length (definite cut length or random),3.1.5 Test report required (see 14.2),3.1.6 Specification number, and3.1.7 Special requirements.4. Materials and Manufactur
11、e4.1 ProcessThe steel shall be aluminum killed steel madeby one or more of the following processes: open-hearth,basic-oxygen, or electric-furnace.4.2 Steel may be cast in ingots or may be strand cast. Whensteels of different grades are sequentially strand cast, identifi-cation of the resultant trans
12、ition material is required. Theproducer shall remove the transition material by any estab-lished procedure that positively separates the grades.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys, and is the direct responsibility of Subcom
13、mitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Oct. 1, 2005. Published November 2005. Originallyapproved in 1968. Last previous edition approved in 2001 as A 587 96 (2001).2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-587 in Section II o
14、f that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Dr
15、ive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.3 ManufactureThe pipe shall be made by electric resis-tance welding.4.4 Heat TreatmentPipe furnished in the as-welded con-dition shall be normalized at a temperature above the uppercritical temperature. Cold-drawn pipe shall be norm
16、alized afterthe final cold-draw pass.5. Chemical Composition5.1 Heat AnalysisAn analysis of each heat of steel shallbe made to determine the percentages of the elements speci-fied. The chemical composition thus determined shall conformto the requirements specified in Table 2 and the chemicalanalysis
17、 shall be in accordance with Test Methods, Practices,and Terminology A 751.5.2 Product AnalysisWhen requested on the purchaseorder, a product analysis shall be made by the supplier fromone pipe or coil of steel per heat. The chemical compositionthus determined shall be reported to the purchaser or t
18、hepurchasers representative and shall conform to the require-ments specified in Table 2.5.3 RetestsIf the original test for product analysis fails,retests of two additional lengths of flat-rolled stock or pipeshall be made. Both retests for the elements in question shallmeet the requirements of the
19、specification; otherwise, allremaining material in the heat shall be rejected or, at the optionof the producer, each length of flat-rolled stock or pipe may beindividually tested for acceptance. Lengths of flat-rolled stockor pipe which do not meet the requirements of the specificationshall be rejec
20、ted.5.4 Supplying an alloy grade of steel that specificallyrequires the addition of any element other than those listed inTable 2 is not permitted.6. Mechanical Requirements6.1 Tensile Properties:6.1.1 The material shall conform to the requirements as totensile properties prescribed in Table 3.6.1.2
21、 The yield strength shall be determined by the drop ofthe beam, by the halt in the gauge of the testing machine, by theuse of dividers, or by other approved methods. When a definiteyield point is not exhibited, the yield strength corresponding toa permanent offset of 0.2 % of the gauge length of the
22、TABLE 1 Tolerance for Outside Diameter and Wall ThicknessNPSDesignatorOutside Diameter Wall ThicknessMin Nom Max Min Nom MaxInches 0.8125 6 0.004 0.095 0.103 0.111 0.129 0.140 0.15112 0.840 6 0.006 0.095 0.103 0.111 0.125 0.140 0.15134 1.050 60.006 0.099 0.108 0.117 0.135 0.147 0.159 1.0625 6 0.006
23、0.099 0.108 0.117 0.135 0.147 0.159 1.3125 6 0.006 0.116 0.126 0.136 0.157 0.171 0.1851 1.315 6 0.006 0.116 0.126 0.136 0.157 0.171 0.185114 1.660 6 0.007 0.121 0.132 0.143 0.167 0.182 0.197 1.875 6 0.008 0.127 0.138 0.149 0.175 0.190 0.205112 1.900 6 0.008 0.127 0.158 0.149 0.175 0.190 0.2052 2.375
24、 6 0.010 0.135 0.147 0.159 0.191 0.208 0.2253 3.500 6 0.015 0.189 0.206 0.223 0.262 0.286 0.3104 4.500 6 0.017 0.207 0.226 0.245 0.295 0.322 0.3496 6.625 6 .030 0.245 0.267 0.289 0.378 0.412 0.4468 8.625 6 .040 0.282 0.308 0.334 0.438 0.478 0.51810 10.750 6 .050 0.319 0.348 0.377 0.520 0.567 0.614Mi
25、llimetres 20.64 6 0.10 2.41 2.62 2.82 3.28 3.56 3.8412 21.30 6 0.15 2.41 2.62 2.82 3.28 3.56 3.8434 26.70 6 0.15 2.51 2.74 2.97 3.43 3.73 4.04 26.99 6 0.15 2.51 2.74 2.97 3.43 3.73 4.04 33.34 6 0.15 2.95 3.20 3.45 3.99 4.34 4.701 33.40 6 0.15 2.95 3.20 3.45 3.99 4.34 4.70114 42.16 6 0.18 3.07 3.35 3
26、.63 4.24 4.62 5.00 47.63 6 0.20 3.22 3.51 3.78 4.45 4.83 5.21112 48.30 6 0.020 3.22 3.51 3.78 4.45 4.83 5.212 60.33 6 0.25 3.43 3.73 4.04 4.85 5.28 5.723 88.90 6 0.38 4.80 5.23 5.66 6.66 7.26 7.874 114.30 6 0.43 5.26 5.74 6.22 7.49 8.18 8.876 168.28 6 0.76 6.22 9.32 7.34 9.60 10.47 11.338 219.08 6 1
27、.02 7.16 7.82 8.48 11.13 12.14 13.1610 273.05 6 1.27 8.10 8.84 9.58 13.21 14.40 15.60TABLE 2 Chemical Composition RequirementsElement Composition, %Carbon, max 0.15Manganese 0.270.63Phosphorus, max 0.035Sulfur, max 0.035Aluminum 0.020.100TABLE 3 Tensile RequirementsTensile strength, min, psi (MPa) 4
28、8 000 (331)Yield strength, min, psi (MPa) 30 000 (207)Elongation in 2 in. or 50 mm, min, % 40A 587 96 (2005)2specimen, or to a total extension of 0.5 % of the gauge lengthunder load, shall be determined.6.1.3 If the percentage of elongation of any test specimen isless than that specified and any par
29、t of the fracture is more than34 in. (19 mm) from the center of the gauge length, as indicatedby scribe marks on the specimen before testing, a retest shall beallowed.6.2 Flattening Test:6.2.1 Asection of pipe not less than 4 in. (102 mm) in lengthshall be flattened cold between parallel plates in t
30、wo steps. Theweld shall be placed 90 from the direction of the appliedforce. During the first step, which is a test for ductility, nocracks or breaks, except as provided for in 6.2.5, shall occur onthe inside or outside surfaces until the distance between theplates is less than the value of H, calcu
31、lated by the followingequation:H 5 1 1 e!t/e 1 t/D (1)where:H = distance between flattening plates, in.,t = specified wall thickness of the pipe, in.,D = specified outside diameter of the pipe, in., ande = deformation per unit length (0.09 for low-carbon steel).6.2.2 During the second step, which is
32、 a test for soundness,the flattening shall be continued until the specimen breaks orthe opposite walls of the pipe meet. Evidence of laminated orunsound material, or of incomplete weld that is revealed duringthe entire flattening test shall be cause for rejection.6.2.3 Surface imperfections in the t
33、est specimens beforeflattening, but revealed during the first step of the flatteningtest, shall be judged in accordance with the finish requirements.6.2.4 Superficial ruptures resulting from surface imperfec-tions shall not be cause for rejection.6.2.5 When low D-to- t ratio tubulars are tested, bec
34、ause thestrain imposed due to geometry is unreasonably high on theinside surface at the 6 and 12 oclock locations, cracks at theselocations shall not be cause for rejection if the D-to-t ratio isless than 10.6.3 Reverse Flattening TestA section 4 in. (102 mm) inlength of pipe in sizes down to and in
35、cluding1316 in. (20.6 mm)in outside diameter shall be split longitudinally 90 on eachside of the weld and the sample opened and flattened with theweld at the point of maximum bend. There shall be no evidenceof cracks or lack of penetration or overlaps resulting from flashremoval in the weld.6.4 Flan
36、ge TestA section of pipe not less than 4 in. (102mm) in length shall be capable of having a flange turned overat a right angle to the body of the pipe without cracking orshowing flaws. This flange, as measured from the outside of thepipe, shall be not less than18 in. (3.2 mm) nor more than12 in.(12.
37、7 mm). Within these limits, the width of the flange shall benot less than the percentages specified in Table 4.7. Dimensions and Permissible Variations7.1 Permissible Variations in Outside Diameter and WallThicknessThe outside diameter and wall thickness variationsshall not exceed the limits prescri
38、bed in Table 1.7.2 Permissible Variations in StraightnessEach pipe shallbe straight within 0.030 in. (0.76 mm) maximum deflection inany 3 ft (0.91 m) length to 8 NPS. For 8 NPS and above, pipeshall be straight within 0.060 in. (1.52 mm) maximum deflec-tion in any 3 ft (0.91 m) length. Galvanized pip
39、e shall bereasonably straight.7.3 Lengths:7.3.1 Pipe may be ordered in definite cut lengths or inrandom lengths as provided herein.7.3.2 When ordered in definite cut lengths, the variation inlength shall not exceed the amounts prescribed in Table 5.7.3.3 If definite lengths are not required, pipe ma
40、y beordered in single random lengths of 16 to 22 ft (4.9 to 6.7 m)with 5 % 12 to 16 ft (3.7 to 4.9 m), or in double random lengthswith a minimum average of 35 ft (10.7 m) and a minimumlength of 22 ft (6.7 m) with 5 % 16 to 22 ft (4.9 to 6.7 m).8. Workmanship, Finish, and Appearance8.1 The finished p
41、ipe shall be free of injurious defects andshall have a workman-like finish. Minor defects may beremoved by grinding, provided the wall thickness is notreduced to less than the minimum thickness permitted for theordered nominal wall thickness.8.2 The pipe shall have smooth ends free of burrs and free
42、of scale except that the pipe may have a superficial “blue”oxide film on the surfaces.8.3 For NPS12 to 112 inclusive, the inside diameter weldingflash shall be removed so that the remaining flash does notexceed 0.006 in. (0.15 mm). For NPS over 112 , the remaininginside diameter welding flash shall
43、not exceed 0.010 in. (0.25mm).8.4 For all nominal sizes, the outside diameter welding flashshall be removed flush with the outside diameter contour.8.5 Undercut flash must be smoothly blended into the pipewall.8.6 The intent of the flash conditions as prescribed in 8.3,8.4, and 8.5 is to obtain a su
44、rface contour suitable for flanging.9. Number of Tests9.1 Two tensile tests as specified in 6.1 shall be made fromeach heat.TABLE 4 Flange RequirementsOutside Diameter of Pipe, in. Width of Flange, % of ODOver34 to 212 , incl 15Over 212 to 334 , incl 1212Over 334 to 412 , incl 10Over 412 to 658 , in
45、cl 712Over 658 5TABLE 5 Permissible Variations in LengthAOutside Diameter, in. Cut Length, in. (mm)Over UnderUnder 218 (3.2) 02 and over316 (4.8) 0AThese permissible variations in length apply to pipe before bending. Theyapply to cut lengths up to and including 24 ft (7.3 m). For lengths over 24 ft,
46、 anadditional over-tolerance of18 in. for each 10 ft (3.0 m) or fraction thereof shall bepermissible, up to a maximum of12 in. (12.7 mm).A 587 96 (2005)39.2 The flattening test as specified in 6.2 shall be made ontwo lengths of pipe from each lot of 250 lengths or fractionthereof.9.3 The reverse fla
47、ttening test specified in 6.3 shall be madeon 1 length of pipe from each lot of 250 lengths or fractionthereof.9.4 The flange test as specified in 6.4 shall be made onspecimens from 2 lengths of pipe from each lot of 250 lengthsor fraction thereof.10. Retests10.1 If the results of the mechanical tes
48、ts of any heat or lotdo not conform to the requirements specified, retests may bemade on additional pipe of double the original number from thesame heat or lot, each of which shall conform to the require-ments specified.11. Retreatment11.1 If a heat or lot fails to conform to the test requirements,t
49、hat heat or lot may be reheat treated and resubmitted for tests.Not more than one reheat treatment shall be permitted.12. Test Specimens and Methods of Testing12.1 The test specimens and the tests required by thisspecification shall conform to those described in Test Methodsand Definitions A 370.12.2 Test specimens shall be taken from the ends of finishedpipe prior to upsetting, swaging, expanding, or other formingoperations, or being cut to length. They shall be smooth on theends and free from burrs and flaws.12.3 If an
