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ASTM A1037 - A 1037M - 05 (2012).pdf

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ASTM A1037 - A 1037M - 05 (2012).pdf

Designation A1037/A1037M − 05 Reapproved 2012Standard Specification forSteel Line Pipe, Black, Furnace-Butt-Welded1This standard is issued under the fixed designation A1037/A1037M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers furnace-butt-welded, black,plain-end or threaded-end, steel pipe for use in the conveyanceof fluids under pressure. Pipe in sizes NPS1⁄2 to 4, inclusive,with nominal wall thickness 0.350 in. [8.9 mm] or less, asgiven in ASME B36.10M is included. Pipe having otherdimensions, in this size range, may be furnished provided suchpipe complies with all other requirements of this specification.1.2 For plain-end pipe, it is intended that the pipe be capableof being circumferentially welded in the field when weldingprocedures in accordance with the requirements of the appli-cable pipeline construction 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 values in each systemare not exact equivalents; therefore, each system is to be usedindependently of the other.2. Referenced Documents2.1 ASTM Standards2A450/A450M Specification for General Requirements forCarbon and Low Alloy Steel TubesA530/A530M Specification for General Requirements forSpecialized Carbon and Alloy Steel PipeA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel, Stainless Steel, RelatedAlloys, and Ferroalloys2.2 ASME StandardASME B36.10M Welded and Seamless Wrought Steel Pipe32.3 API Standards5L Specification for Line Pipe45B Specification for Threading, Gauging, and Thread In-spection of Casing, Tubing, and Line Pipe Threads43. Terminology3.1 DefinitionsFor terminology used in this specification,refer to Terminology A941.3.2 Definitions of Terms Specific to This Standard3.2.1 furnace-butt-welded pipe, npipe produced in mul-tiple lengths from coiled skelp and subsequently cut intoindividual lengths, having its longitudinal butt joint forgewelded by the mechanical pressure developed in rolling thehot-formed skelp through a set of round pass welding rolls.3.2.2 lot, na quantity of pipe of the same ordereddiameter, heat, wall thickness, and grade as given in Table 1.3.2.3 specified outside diameter OD, n the outsidediameter specified in the purchase order or the outside diameterlisted inASME B36.10M for the nominal pipe size specified inthe purchase order.4. General Requirements4.1 Pipe furnished under this specification shall conform tothe applicable requirements of Specification A530/A530Munless otherwise provided herein.5. Ordering Information5.1 It is the purchaser’s responsibility to specify in thepurchase order all information necessary to purchase theneeded material. Examples of such information include, but arenot limited to, the following5.1.1 Specification designation and year-date,5.1.2 Quantity feet or metres,5.1.3 Grade A or B,5.1.4 Size either nominal NPS or outside diameter, andwall thickness,5.1.5 Length,5.1.6 End finish plain-end, special plain-end, or threaded-end, see 15.1,5.1.7 End use of the pipe,1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloysand is the direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved March 1, 2012. Published November 2012.. Originallyapproved in 2005. Last previous edition approved in 2005 as A1037/A1037M–05.DOI 10.1520/A1037_A1037M-05R12.2For 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 standard’s Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers ASME, ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990.4Available from The American Petroleum Institute API, 1220 L. St., NW,Washington, DC 20005.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Copyright by ASTM Intl all rights reserved;5.1.8 Special requirements, and5.1.9 Bar coding see 18.3.6. Materials and Manufacture6.1 The steel shall be made by one or more of the followingprocesses basic-oxygen, electric-furnace, or open-hearth.6.2 The pipe shall be made by the furnace-butt-weldingprocess.7. Chemical Composition7.1 The steel shall contain, by heat and product analyses, nomore than 0.25 carbon, 1.20 manganese, 0.045 sulfur,and 0.045 phosphorus.7.2 As a minimum, the required analysis shall contain thefollowing elements carbon, manganese, phosphorus, sulfur,chromium, columbium, copper, molybdenum, nickel, silicon,and vanadium.7.3 Product analyses shall be made on at least two samplesfrom each heat of steel.7.4 All analyses shall be in accordance with Test Methods,Practices, and Terminology A751.7.5 If one or both of the product analyses representing a heatfails to conform to the specified 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. Tensile Requirements8.1 The material shall conform to the requirements fortensile properties given in Table 2 and in 8.4.8.2 The yield strength corresponding to a total extensionunder load of 0.5 of the gage length shall be determined.8.3 Longitudinal tests shall be performed for all pipe. Suchtests shall be either strip specimens taken 90 from the weld orfull section specimens, at the option of the manufacturer.8.4 The minimum elongation in 2 in. [50 mm] for eachgrade shall be that determined by the following equatione 5 CA0.2/U0.91wheree minimum elongation in percent, rounded to the nearestpercent,C constant 625 000 [1940],A cross-sectional area of the tensile test specimen inin.2[mm2], based upon the specified outside diameteror the nominal specimen width and the specified wallthickness, rounded to the nearest 0.01 in.2[1 mm2]. Ifthe area thus calculated is greater than 0.75 in.2[485mm2], the value of 0.75 in.2[485 mm2] shall be used,andU specified minimum tensile strength, psi [MPa].9. Flattening Test9.1 Atest specimen at least 4 in. [100 mm] in length shall beflattened cold between parallel plates in three steps, with theweld located either 0 or 90 from the line of direction of force,as required in 9.2.1. Except as allowed by 9.3, during the firststep, which is a test for ductility of the weld, no cracks orbreaks on the inside, outside, or end surfaces at the weld shallbe present before the distance between the plates is less thantwo thirds of the specified diameter of the pipe. As a secondstep, the flattening shall be continued as a test for ductilityaway from the weld. During the second step, no cracks orbreaks on the inside, outside, or end surfaces away from theweld, shall be present before the distance between the plates isless than one third of the specified outside diameter of the pipebut is not less than five times the wall thickness of the pipe.During the third step, which is a test for soundness, theflattening shall be continued until the test specimen breaks orthe opposite walls of the test specimen meet. Evidence oflaminated or unsound material or of incomplete weld that isrevealed by the flattening test shall be cause for rejection.9.2 The flattening test specified in 9.1 shall be made asfollows9.2.1 Test specimens taken from the front end of the firstpipe intended to be supplied from each coil and the back endof the last pipe intended to be supplied from each coil shall beflattened with the weld located at 90 from the line of directionof force.9.2.2 Test specimens taken from pipe at any two locationsintermediate to the front end of the first pipe and the back endof the last pipe intended to be supplied from each coil shall beflattened with the weld located at 0 from the line of directionof force.9.3 When low D-to-t ratio pipe is tested, because the strainimposed due to geometry is unreasonably high on the insidesurface at the six and twelve o’clock locations, cracks at theselocations shall not be cause for rejection if the D-to-t ratio isless than 10.10. Hydrostatic Test10.1 Each length of pipe shall be subjected to the hydro-static test without leakage through the weld seam or the pipebody.10.2 Each length of pipe NPS 2 or larger shall be tested, bythe manufacturer, to a minimum hydrostatic pressure calcu-lated from the following relationshipTABLE 1 Lot Size and Sample Size for Mechanical TestingSizeDesignationLot SizeSampleSizeNPS 2 25 tons [23 Mg] or fraction thereof 1NPS 2 throughNPS 450 tons [45 Mg] or 500 lengths,or fraction thereof1TABLE 2 Tensile RequirementsGradeYield Strength, min Tensile Strength, minpsi MPa psi MPaA 30 000 205 48 000 330B 35 000 240 60 000 415A1037/A1037M − 05 20122Copyright by ASTM Intl all rights reserved;Inch-Pound UnitsP 5 2 St/D 3 C 2SI UnitsP 5 2000 St/D 3 C 3whereP minimum hydrostatic test pressure, psi [kPa],S specified minimum yield strength, psi [MPa],t specified wall thickness, in. [mm],D specified outside diameter, in. [mm], andC 0.60.10.3 For pipe sizes smaller than NPS 2, the test pressuresshall be as given in Table 3. For pipe in sizes smaller than NPS2 with wall thicknesses lighter than those listed, the testpressure for the next heavier listed specified wall thicknessshall be used. For intermediate specified outside diameterssmaller than NPS 2, the test pressures given for the nextsmaller specified outside diameter shall be used.10.4 When computed test pressures are not an exact mul-tiple of 10 psi [100 kPa], they shall be rounded to the nearest10 psi [100 kPa].10.5 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 themanufacturer’s option. The hydrostatic test pressure shall bemaintained for not less than 5 s for all pipe sizes.11. Nondestructive Testing11.1 The weld seam of each length of pipe NPS 2 [DN 50]or larger shall be tested with a nondestructive electric test asfollows11.1.1 Ultrasonic or Electromagnetic InspectionAnyequipment utilizing the ultrasonic or electromagnetic principlesand capable of continuous and uninterrupted inspection of theweld seam shall be used. The equipment shall be checked withan applicable reference standard as described in 11.2 at leastonce every8hofinspection to demonstrate the effectiveness ofthe inspection procedures. The equipment shall be adjusted toproduce well-defined indications when the reference standardis scanned by the inspection unit in a manner simulating theinspection of the product. The location of the equipment shallbe at the manufacturer’s option.11.2 Reference StandardsReference standards shall haveboth the outside diameter and wall thickness within thetolerances specified for the production pipe to be inspected andmay be of any convenient length as determined by the pipemanufacturer. Reference standards shall be either full sectionsor coupons taken from the pipe. Reference standards shallcontain machined notches as shown in Fig. 1, one on the insidesurface and one on the outside surface, or a drilled hole asshown in Fig. 1, at the option of the pipe manufacturer. Thenotches shall be parallel to the weld seam, and shall beseparated by a distance sufficient to produce two separate anddistinguishable signals. The1⁄8-in. [3-mm] drilled hole shall bedrilled through the wall and perpendicular to the surface of thereference standard as shown in Fig. 1. Care should be taken inthe preparation of the standard to ensure freedom from fins,other edge roughness, and distortion of the pipe.NOTE 1The calibration standards shown in Fig. 1 are convenientstandards for calibration of nondestructive testing equipment. The dimen-sions of such standards should not be construed as the minimum sizeimperfection detectable by such equipment.11.3 Acceptance LimitsTable 4 gives the height of accep-tance limit signals in percent of the height of signals producedby the calibration standards. Imperfections in the weld seamthat produce a signal greater than the acceptance limit given inTable 4 shall be considered defects unless the pipe manufac-turer can demonstrate that the imperfection does not reduce theeffective wall thickness to below 87.5 of the specified wallthickness.11.4 Surface condition, operator qualification, extent ofexamination, and standardization procedure shall be in accor-dance with the provisions of Specification A450/A450M.12. Number of Tests12.1 Tension testing shall be performed on a lot basis, withthe lot size and sample sizes as given in Table 1.13. Retests13.1 If the results of the tension test for any lot fails toconform to the applicable requirements given in Table 2,retests are permitted to be made on additional pipe of doublethe original number from the same lot, each of which shallconform to the specified requirements.13.2 If any flattening test fails to conform to the require-ments specified in 9.1, each length in the failed multiple shallbe rejected or flattening tests shall be made using test speci-mens taken from each end of each individual length in thefailed multiple. Such tests shall be made with the weldalternately at 0 and 90 from the line of direction of force.14. Dimensions, Mass, and Permissible Variations14.1 The dimensions and masses per unit length of some ofthe pipe sizes included in this specification are given in ASMEB36.10M. The mass per unit length of pipe having an inter-mediate specified outside diameter, or intermediate specifiedwall thickness, or both, shall be calculated using the equationin 14.2.TABLE 3 Hydrostatic Test PressureNPSDesignatorOutsideDiameterWallThicknessTestPressure, minin. mm in. mm psi kPa1⁄2 0.840 21.3 0.109 2.8 700 48000.147 3.7 850 59003⁄4 1.050 26.7 0.113 2.9 700 48000.154 3.9 850 59001 1.315 33.4 0.133 3.4 700 48000.179 4.6 850 59000.250 6.4 950 650011⁄4 1.660 42.2 0.140 3.6 1300 90000.191 4.9 1900 13 1000.250 6.4 2000 13 80011⁄2 1.900 48.3 0.145 3.7 1300 90000.200 5.1 1900 13 1000.281 7.1 2050 14 100A1037/A1037M − 05 20123Copyright by ASTM Intl all rights reserved;14.2 MassThe mass of a single length of pipe shall notvary more than 10 , −5.0 from its theoretical mass, ascalculated using its mass per unit length and its measuredlength. Pipe masses per unit length not listed in ASMEB36.10M shall be calculated using the following equationInch-Pound UnitsM 5 tD 2 t 310.69 4SI UnitsM 5 tD 2 t 30.024 66 5whereM m

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