1、Designation: A 1024/A 1024M 02 (Reapproved 2007)Standard Specification forSteel Line Pipe, Black, Plain-End, Seamless1This standard is issued under the fixed designation A 1024/A 1024M; the number immediately following the designation indicates theyear of original adoption or, in the case of revisio
2、n, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers seamless, black, plain-endsteel pipe for use in the conveyance of fluids und
3、er pressure.Pipe in sizes NPS 1 to 26, inclusive, as given inASME B36.10M is included. Pipe having other dimensions, inthis size range, may be furnished provided such pipe complieswith all other requirements of this specification.1.2 It is intended that the pipe be capable of being circum-ferentiall
4、y welded in the field when welding procedures inaccordance with the requirements of the applicable pipelineconstruction code are used.1.3 The values stated in either inch-pound units or in SIunits are to be regarded separately as standard. Within the text,the SI units are shown in brackets. The valu
5、es in each systemare not exact equivalents; therefore, each system is to be usedindependently of the other.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 450/A 450M Specification for General Requirements forCarbon and Low Alloy
6、Steel TubesA 530/A 530M Specification for General Requirements forSpecialized Carbon and Alloy Steel PipeA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsA 941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and Ferroalloys2.2 API Standard:API RP
7、5L3 Recommended Practice for Conducting Drop-Weight Tear Tests on Line Pipe32.3 ASME Standard:ASME B36.10M Welded and Seamless Wrought Steel Pipe43. Terminology3.1 DefinitionsFor terminology used in this specification,refer to Terminology A 941.3.2 Definitions of Terms Specific to This Standard:3.2.
8、1 lot, na quantity of pipe of the same ordered diam-eter, heat, wall thickness, and grade as given in Table 1.3.2.2 seamless pipe, na tubular product made without awelded seam; it is manufactured usually by hot working thematerial, and if necessary, by subsequently cold-finishing thehot worked tubul
9、ar product to produce the desired shape,dimensions, and properties.3.2.3 specified outside diameter (OD), nthe outside diam-eter specified in the purchase order or the outside diameterlisted in ASME B36.10M for the nominal pipe size specified inthe purchase order.4. General Requirements4.1 Pipe furn
10、ished under this specification shall conform tothe applicable requirements of Specification A 530/A 530Munless otherwise provided herein.5. Ordering Information5.1 Information items to be considered, if appropriate, forinclusion in the purchase order are as follows:5.1.1 Specification designation an
11、d year of issue,5.1.2 Quantity (feet or metres),5.1.3 Grade (see Table 2 and 8.1.5),5.1.4 Size (either nominal (NPS) or outside diameter andwall thickness),5.1.5 Nominal length (see 14.3),5.1.6 End finish (plain-end beveled or special, see 15.1),5.1.7 Impact test temperature (see 8.2.5),5.1.8 Heat t
12、reatment condition (see 6.1),5.1.9 Carbon equivalent for over 0.800 in. 20.3 mm wallthicknesses (see 7.4),5.1.10 Reduced under thickness variation (see Table 5),5.1.11 Special requirements,1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys
13、 and is the direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Nov. 1, 2007. Published January 2008. Originallyapproved in 2002. Last previous edition approved in 2002 asA 1024/A 1024M 02,2For referenced ASTM standards, visit the ASTM website, www.a
14、stm.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.3Available from American Petroleum Institute (API), 1220 L. St., NW, Wash-ington, DC 20005-4070, http:/api-ec.api.org.4Ava
15、ilable from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.12 Supplementary requiremen
16、ts, and5.1.13 Bar coding (see 18.3).6. Manufacture6.1 Pipe shall be manufactured by the seamless process.Unless a specific heat treatment condition is specified in thepurchase order, pipe shall be furnished in the as-rolled,normalized, normalized and tempered, or quenched and tem-pered condition.7.
17、Chemical Composition7.1 The steel for any grade, by heat and product analyses,shall contain no more than 0.24 % carbon, 0.015 % sulfur, and0.025 % phosphorus.7.2 The steel shall contain no more than 0.0007 % boron, byheat analysis.7.3 For pipe with a specified wall thickness less than orequal to 0.8
18、00 in. 20.3 mm, the carbon equivalent (CE) shallnot exceed 0.43 %, calculated from the product analysis usingthe following equation:CE 5 C 1 F Mn/6 1 Si/24 1 Cu/15 1 Ni/20 1 Cr1Mo1V1Cb!/5(1)where:F = a compliance factor that is dependent on the carboncontent as shown below:CarbonContent, %FCarbonCon
19、tent, %F0.21 1.000.13 0.800.14 0.857.4 For pipe with a specified wall thickness greater than0.800 in. 20.3 mm, the carbon equivalent (CE) shall be asspecified in the purchase order.7.5 A heat analysis shall be made for each heat of steelfurnished under this specification. All pipe shall be markedwit
20、h either a heat number or heat code in accordance with 18.1and 18.2.7.6 Product analyses shall be made on at least two samplesfrom each heat of steel.7.7 All analyses shall be in accordance with Test Methods,Practices, and Terminology A 751, and shall include all ele-ments required in the carbon equ
21、ivalent equation of 7.3,inaddition to titanium, phosphorus, sulfur, and boron, except thatthe product analysis for boron is not required. Titanium isreported for information only and is not a cause for rejection.7.8 If one or both of the product analyses representing a heatfail to conform to the spe
22、cified requirements, the heat shall berejected, or analyses shall be made on double the originalnumber of test samples that failed, each of which shall conformto the specified requirements.8. Mechanical Properties8.1 Tension Test:8.1.1 The material shall conform to the tensile requirementsgiven in T
23、able 2 and 8.1.6. The yield strength maxima applyonly to pipe NPS 8 and larger.8.1.2 The yield strength corresponding to a total extensionunder load of 0.5 % of the gage length shall be determined.8.1.3 Transverse tension tests shall be performed on pipeNPS 8 and larger, or longitudinal, subject to
24、approval bypurchaser. Transverse test specimens shall be either strip testspecimens or round bar test specimens, at the option of themanufacturer. All transverse strip test specimens shall beTABLE 1 Lot Size and Sample Size for Mechanical andToughness TestingPipe Size Lot Size Sample SizeNPS 12 100
25、lengths 1TABLE 2 Tensile RequirementsGrade Yield Strength,Min.Yield Strength,AMax.Tensile Strength,Min.psi MPa psi MPa psi MPa35 35 000 240 65 000 450 60 000 41550 50 000 345 77 000 530 70 000 48560 60 000 415 80 000 550 75 000 51570 70 000 485 87 000 600 80 000 55080 80 000 550 97 000 670 90 000 62
26、0ASee 8.1.1.TABLE 3 Hydrostatic Test PressureNPSDesignatorSpecified ODin. mmSpecified WallThicknessin. mmTest Pressure,Min.psi kPa1 1.315 33.4 0.133 3.4 700 48000.179 4.6 850 59000.250 6.4 950 66000.358 9.1 1000 6900114 1.660 42.2 0.140 3.6 1300 90000.191 4.9 1900 13 1000.250 6.4 2000 13 8000.382 9.
27、7 2300 15 900112 1.900 48.3 0.145 3.7 1300 90000.200 5.1 1900 13 1000.281 7.1 2000 13 8000.400 10.2 2300 15 900TABLE 4 Acceptance LimitsType of NotchAcceptance LimitSignal, %Parallel Sided Notch 100Drilled Hole 100TABLE 5 Permissible Variations in Wall ThicknessNPS DesignatorPermissible Variations f
28、romSpecified Wall Thickness,A%Over Under1to212 , incl. 20.0 10.03 and larger 15.0 10.0AIf a reduced under thickness variation is specified in the purchase order, it ispermissible for the over thickness variation to be increased, provided that theapplicable total tolerance range in percent is not inc
29、reased.A 1024/A 1024M 02 (2007)2approximately 112 in. 38 mm wide in the gage length andeach shall represent the full wall thickness of the pipe fromwhich the test specimen was cut.8.1.4 Longitudinal tension tests shall be performed on pipesmaller than NPS 8. Longitudinal test specimens shall be eith
30、erstrip test specimens, full-size test specimens, or round bar testspecimens, at the option of the manufacturer.8.1.5 Grades intermediate to those given in Table 2 shall befurnished if so specified in the purchase order. For intermediategrades, the difference between the specified maximum yieldstren
31、gth and the specified minimum yield strength and thedifference between the specified minimum tensile strength andthe specified minimum yield strength shall be as given in Table2 for the next higher listed grade.8.1.6 For each grade, the minimum elongation in 2 in. 50mm shall be as determined by the
32、following equation:e 5 C A0.2/ U0.9! (2)where:e = minimum elongation in percent, rounded to the nearestpercent,C = constant = 625 000 1940,A = the lesser of 0.75 in.2485 mm2 and the cross-sectional area of the tension test specimen inin.2mm2, based upon the specified outside diameterof the pipe or t
33、he nominal width of the tension testspecimen and the specified wall thickness, rounded tothe nearest 0.01 in.21 mm2,U = specified minimum tensile strength, psi MPa.8.2 Impact Test:8.2.1 Except as allowed by 8.2.2, pipe shall be CharpyV-notch tested in accordance with Test Methods and Defini-tions A
34、370. For pipe smaller than NPS 5, such test specimensshall be taken longitudinal to the pipe axis. For pipe NPS 5 andlarger, the test specimens shall be taken transverse to the pipeaxis.8.2.2 The basic test specimen is full size Charpy V-notch.Where full size test specimens, either conventional or c
35、ontain-ing the original OD surface, cannot be obtained due to acombination of specified outside diameter and specified wallthickness, two-thirds size or half-size test specimens shall beused. Where combinations of specified outside diameter andspecified wall thickness do not permit half-size test sp
36、ecimensto be obtained, there is no requirement for impact testing. In allcases, the largest possible test specimen size shall be used,except where such a test specimen size will result in absorbedenergy values greater than 80 % of the testing machinecapacity.8.2.3 When subsize test specimens are use
37、d, the require-ments for absorbed energy shall be the adjusted values ob-tained by the following relationships, with the calculatedvalues rounded to the nearest foot pound-force joule:For 2/3 size: N 5 R 3 0.67 (3)For 1/2 size: N 5 R 3 0.50where:N = adjusted value, ftlbf J, andR = value required by
38、8.2.4.8.2.4 For pipe NPS 5 through NPS 26, the absorbed energyrequirement for full size test specimens shall be 20 ftlbf 27 J.For pipe smaller than NPS 5, the absorbed energy requirementfor full size test specimens shall be 30 ftlbf 40 J.8.2.5 Charpy impact testing shall be performed at 32F0C, unles
39、s a lower test temperature is specified in thepurchase order.9. Hydrostatic Test9.1 Each length of pipe shall be subjected to the hydrostatictest without leakage through the wall.9.2 Each length of pipe NPS 2 or larger shall be tested, bythe manufacturer, to a minimum hydrostatic pressure calcu-late
40、d from the following relationship:Inch2Pound Units: P 5 2 St/D! 3 C (4)SI Units: P 5 2000 St/D! 3 Cwhere:S = specified minimum yield strength, psi MPa,t = specified wall thickness, in. mm,D = specified outside diameter, in. mm,C = 0.60 for pipe NPS 2 through NPS 5,0.75 for pipe larger than NPS 5 thr
41、ough NPS 8,0.85 for pipe larger than NPS 8 through NPS 18,0.90 for pipe larger than NPS 18, andP = minimum hydrostatic test pressure, psi kPa.9.3 For pipe sizes smaller than NPS 2, the test pressuresgiven in Table 3 are arbitrary. For pipe in sizes smaller thanNPS 2 with specified wall thicknesses l
42、ighter than those listed,the test pressure for the next heavier listed specified wallthickness shall be used. For intermediate specified outsidediameters for pipe sizes smaller than NPS 2, the test pressuresgiven for the next smaller specified outside diameter shall beused.9.4 When computed test pre
43、ssures are not an exact multipleof 10 psi 100 kPa, they shall be rounded to the nearest 10 psi100 kPa.9.5 The minimum hydrostatic test pressure required tosatisfy these requirements need not exceed 3000 psi 20 700kPa. This does not prohibit testing at a higher pressure at themanufacturers option. Th
44、e hydrostatic test pressure shall bemaintained for not less than 5 s for all pipe sizes.10. Nondestructive Electric Test10.1 The entire outside surface of each pipe shall beinspected full length for longitudinal defects by either magneticparticle inspection, ultrasonic inspection, electromagnetic in
45、-spection, or a combination thereof. The location of the equip-ment in the mill shall be at the discretion of the manufacturer;however, the nondestructive inspection shall take place after allheat treating and expansion operations, if performed, but maytake place before cropping, beveling, and end s
46、izing.10.2 Magnetic Particle InspectionThe depth of all imper-fections revealed by magnetic particle inspection shall bedetermined; and when found to be greater than 10 % of thespecified wall thickness, the imperfection shall be considered adefect.10.3 Ultrasonic and Electromagnetic InspectionAnyequ
47、ipment utilizing the ultrasonic or electromagnetic principlesA 1024/A 1024M 02 (2007)3and capable of continuous and uninterrupted inspection shallbe used. The equipment shall be checked with an applicablereference standard as described in 10.4 at least once every 8 hof inspection to demonstrate the
48、effectiveness of the inspectionprocedures. The equipment shall be adjusted to producewell-defined indications when the reference standard isscanned by the inspection unit in a manner simulating theinspection of the product.10.4 Reference StandardsReference standards shall haveboth outside diameter a
49、nd wall thickness within the tolerancesspecified for the production pipe to be inspected, and may be ofany convenient length as determined by the pipe manufacturer.For ultrasonic inspection, the reference standard shall contain amachined notch as shown in Fig. 1. For electromagneticinspection, the reference standard shall contain either a ma-chined notch or a18-in. 3-mm drilled hole as shown in Fig.1. The notch shall be in the outer surface of the refe
