1、Designation: A 139/A 139M 04Standard Specification forElectric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)1This standard is issued under the fixed designation A 139/A 139M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the ye
2、ar of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers fiv
3、e grades of electric-fusion(arc)-welded straight-seam or helical-seam steel pipe. Pipe ofNPS 4 (Note 1) and larger with nominal (average) wallthickness of 1.0 in. 25.4 mm and less are covered. Listing ofstandardized dimensions are for reference (Note 2). The gradesof steel are pipe mill grades havin
4、g mechanical propertieswhich differ from standard plate grades. The pipe is intendedfor conveying liquid, gas, or vapor.NOTE 1The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this standard for such traditional terms as “nominaldiameter,”“ size,” and “nominal size.”NOTE 2A
5、comprehensive listing of standardized pipe dimensions iscontained in ASME B36.10M2.NOTE 3The suitability of pipe for various purposes is somewhatdependent on its dimensions, properties, and conditions of service. Forexample, for high-temperature service see applicable codes and Specifi-cation A 691.
6、1.2 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
7、ASTM Standards:3A 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 691 Specification for Carbon and Alloy Steel Pipe, Elec-tric Fusion-Welded for High-Pressure Service at HighTemperaturesA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsE 5
8、9 Practice for Sampling Steel and Iron for Determinationof Chemical Composition42.2 American Welding Society Standard:5AWS B2.1 Standard for Welding Procedure and Perfor-mance Qualifications Welding Handbook, Vol 1, 8th ed2.3 ASME Standards:6ASME B36.10M Welded and Seamless Wrought Steel PipeASME B3
9、6.19M Stainless Steel PipeASME Boiler and Pressure Vessel Code: Section IX, Weld-ing Qualifications3. Ordering Information3.1 Orders for material under this specification shouldinclude the following, as required, to describe the desiredmaterial adequately:3.1.1 Quantity (feet, metres, or number of l
10、engths),3.1.2 Name of material (electric-fusion-(arc) welded steelpipe),3.1.3 Grade (Table 1),3.1.4 Size (NPS, or outside diameter, and nominal wallthickness, or schedule number),3.1.5 Lengths (specific or random, Section 17),3.1.6 End finish (Section 18),3.1.7 Hydrostatic test pressure (Section 16,
11、 Note 8, andNote 9),3.1.8 ASTM specification designation, and3.1.9 End use of material.4. Process4.1 The steel shall be made by one or more of the followingprocesses: open-hearth, basic-oxygen, or electric-furnace.4.2 Steel may be cast in ingots or may be strand cast. Whensteels of different grades
12、are sequentially strand cast, identifi-cation of the resultant transition material is required. Theproducer shall remove the transition material by any estab-lished procedure that positively separates the grades.NOTE 4The term “basic-oxygen steelmaking” is used generically to1This specification is u
13、nder the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys , and is the direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved March 1, 2004. Published April 2004. Originallyapproved in 1932. Last previous edition approved
14、in 2000 as A 139 00.2Annual Book of ASTM Standards, Vol 01.01.3For 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
15、.4Withdrawn.5Available from American Welding Society, 550 NW LeJeune Rd., Miami, FL33135.6Available from American Society of Mechanical Engineers, Three Park Ave.,New York, NY 10016-5990.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor
16、Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.describe processes in which molten iron is refined to steel under a basicslag in a cylindrical furnace lined with basic refractories, by directing a jetof high-purity gaseous oxygen onto the surface of the hot metal bath.5. Manufact
17、ure5.1 The longitudinal edges of the steel shall be shaped togive the most satisfactory results by the particular weldingprocess employed. The weld shall be made by automatic (Note5) means (except tack welds if used) and shall be of reasonablyuniform width and height for the entire length of the pip
18、e.NOTE 5Upon agreement between the purchaser and the manufacturer,manual welding by qualified procedure and welders may be used as anequal alternative under these specifications.5.2 All weld seams made in manufacturing pipe shall bemade using complete joint penetration groove welds.6. Chemical Compo
19、sition6.1 The steel shall conform to the chemical requirementsprescribed in Table 1 and the chemical analysis shall be inaccordance with Test Methods, Practices, and TerminologyA 751.7. Tensile Requirements for the Steel7.1 Longitudinal tension test specimens taken from the steelshall conform to the
20、 requirements as to tensile propertiesprescribed in Table 2. At the manufacturers option, the tensiontest specimen for sizes 858 in. 219.1 mm in outside diameterand larger may be taken transversely as described in 19.4.7.2 The yield point shall be determined by the drop of thebeam, by the halt in th
21、e gage of the testing machine, by the useof dividers, or by other approved methods. The yield strengthcorresponding to a permanent offset of 0.2 % of the gage lengthof the specimen, or to a total extension of 0.5 % of the gagelength under load shall be determined.8. Tensile Requirements of Productio
22、n Welds8.1 Reduced-section tension test specimens taken perpen-dicularly across the weld in the pipe, with the weld reinforce-ment removed, shall show a tensile strength not less than 95 %TABLE 1 Chemical RequirementsElement Composition, max, %Grade A Grade B Grade C Grade D Grade ECarbon 0.25 0.26
23、0.28 0.30 0.30Manganese 1.00 1.00 1.20 1.30 1.40Phosphorus 0.035 0.035 0.035 0.035 0.035Sulfur 0.035 0.035 0.035 0.035 0.035TABLE 2 Tensile RequirementsGrade A Grade B Grade C Grade D Grade ETensile strength, min, ksi MPa 48 330 60 415 60 415 60 415 66 455Yield strength, min, ksi MPa 30 205 35 240 4
24、2 290 46 315 52 360Elongation in 2 in. or 50 mm, min, %:Basic minimum elongation for walls516 in. 7.9 mm and over in 35 30 25 23 22thickness, longitudinal strip testsFor longitudinal strips tests, a deduction for each132-in. 0.8-mm 1.75A1.50A1.25 1.50 2.0decrease in wall thickness below516 in. 7.9 m
25、m from thebasic minimum elongation of the following percentageAElongation in 8 in. or 200 mm, min, %B,CInch Pound Units, 1500/specified minimum tensile strength (ksi)SI Units, 10 300/specified minimum tensile strength MPaAThe table below gives the computed minimum values.BFor wall thicknesses12 in.
26、12.7 mm and greater, the elongation may be taken in 8 in. or 200 mm.CThe elongation in 8 in. or 200 mm need not exceed 30 %.Wall Thickness Elongation in 2 in. or 50 mm, min, %in. mm Grade A Grade B516 (0.312) 7.9 35.00 30.00932 (0.281) 7.1 33.25 28.5014 (0.250) 6.4 31.50 27.00732 (0.219) 5.6 29.75 2
27、5.50316 (0.188) 4.8 28.00 24.00532 (0.156) 4.0 26.25 22.5018 (0.125) 3.7 24.50 21.00332 (0.094) 2.4 22.75 19.50116 (0.062) 1.6 21.00 18.00NoteThe above table gives the computed minimum elongation values for each132-in. 0.8-mm decrease in wall thickness. Where the wall thickness lies between twovalue
28、s shown above, the minimum elongation value shall be determined by the following equation:Grade EquationInch-Pound UnitsEquationSI UnitsA E =56t + 17.50 E = 2.20t + 17.50B E =48t + 15.00 E = 1.89t + 15.00C E =40t + 12.50 E = 1.57t + 12.50D E =48t +8 E = 1.89t +8E E =64t +2 E = 2.52t +2where:E = elon
29、gation in 2 in. or 50 mm, %, andt = actual thickness of specimen, in. mmA 139/A 139M 042of the minimum specified in Section 7. At the manufacturersoption, the test may be made without removing the weldreinforcement, in which case the tensile strength shall be notless than that specified in Section 7
30、.9. Heat Analysis9.1 An analysis of each heat of steel shall be made by themanufacturer to determine the percentages of the elementsspecified in Section 6. This analysis shall be made from a testingot taken during the pouring of the heat. When requested bythe purchaser, the chemical composition thus
31、 determined shallbe reported to the purchaser or his representative, and shallconform to the requirements specified in Section 6.10. Product Analysis10.1 An analysis may be made by the purchaser on samplesof pipe selected at random and shall conform to the require-ments specified in Section 6. Sampl
32、es for chemical analysis,except for spectrochemical analysis, shall be taken in accor-dance with Method E 59. The number of samples shall bedetermined as follows:NPS Number of Samples SelectedUnder 14 2 for each lot of 200 pipes or fraction thereof14 to 36, incl 2 for each lot of 100 pipes or fracti
33、on thereofOver 36 2 for each 3000 ft or fraction thereof10.2 RetestsIf the analysis of either length of pipe orlength of skelp does not conform to the requirements specifiedin Section 6, analyses of two additional lengths from the samelot shall be made, each of which shall conform to therequirements
34、 specified.11. Dimensions, Mass, and Permissible Variations11.1 MassThe specified mass per unit length shall becalculated using the following equation:M 5 CD 2 t!t (1)where:C = 10.69 0.02466,M = mass per unit length, lb/ft kg/m,D = outside diameter, in. mm, specified or calculated(from inside diamet
35、er and wall thickness), andt = specified wall thickness, in. (to 3 decimal places)mm (to 2 decimal places)NOTE 6The mass per unit length given in ASME B36.10M andASME B36.19M and the calculated mass given by the equation of 11.1 arefor carbon steel pipe. The mass per unit length of pipe made of ferr
36、iticstainless steels may be about 5 % less, and that made of austenitic stainlesssteel about 2 % greater than the values given. The specified mass of anindividual pipe length shall be calculated as its specified mass per unitlength times its length.11.1.1 The mass of any length of pipe shall not var
37、y morethan 10 % over its specified mass.11.1.2 The mass of any length of pipe shall not vary morethan 5 % under the specified mass if the specified wallthickness is 0.188 in. 4.78 mm or less or more than 5.5 %under if the specified wall thickness is greater than 0.188 in.4.78 mm.11.1.3 The mass of a
38、 carload lot shall not vary more than1.75 % under the specified mass. A carload lot is considered tobe a minimum of 40 000 lb 18 Mg shipped on a conveyance.11.2 ThicknessThe minimum wall thickness at any pointshall be not more than 12.5 % under the nominal wall thicknessspecified.11.3 CircumferenceT
39、he pipe shall be substantially round.The outside circumference of the pipe shall not vary more than61.0 %, but not exceeding 634 in. 19.0 mm, from thenominal outside circumference based upon the diameter speci-fied, except that the circumference at ends shall be sized, ifnecessary, to meet the requi
40、rements of Section 18.11.4 StraightnessFinished pipe shall be commerciallystraight. When specific straightness requirements are desired,the order should so state, and the tolerance shall be a matter ofagreement between the purchaser and the manufacturer.11.5 Ovality (Out-of-Roundness)The pipe diamet
41、er,within 4.0 in. 100 mm of ends, shall not vary more than 1 %from the specified diameter as measured across any singleplane with a bar gage, caliper, or other instrument capable ofmeasuring actual diameter.12. Finish12.1 Repair by WeldingThe manual, or automatic arc,welding of injurious defects in
42、the pipe wall, provided theirdepth does not exceed one third the specified wall thickness,will be permitted. Defects in the welds, such as sweats or leaks,shall be repaired or the piece rejected at the option of themanufacturer. Repairs of this nature shall be made by com-pletely removing the defect
43、, cleaning the cavity, and thenwelding.12.2 All repaired pipe shall be tested hydrostatically inaccordance with Section 16.13. Retests13.1 If any specimen tested under Sections 8 or 15 fails tomeet the requirements, retests of two additional specimensfrom the same lot of pipe shall be made, all of w
44、hich shall meetthe specified requirements. If any of the retests fail to conformto the requirements, test specimens may be taken from eachuntested pipe length, at the manufacturers option, and eachspecimen shall meet the requirements specified, or that pipeshall be rejected.14. Number of Production
45、Test Specimens14.1 One longitudinal tension test specimen specified in19.2 shall be made from the steel of each heat, or fractionthereof, used in the manufacture of the pipe.14.2 One reduced-section production weld test specimenspecified in 19.5 shall be taken from a length of pipe from eachlot of 3
46、000 ft (914 m) of pipe, or fraction thereof, of each sizeand wall thickness.14.3 If any test specimen shows defective machining ordevelops flaws not associated with the quality of the steel or thewelding, it may be discarded and another specimen substituted.14.4 Each length of pipe shall be subjecte
47、d to the hydro-static test specified in Section 16.15. Qualification of Welding Procedure15.1 Welding procedures shall be qualified in accordancewith the requirements of AWS B2.1; ASME Boiler andA 139/A 139M 043Pressure Vessel Code, Section IX; or other qualification pro-cedures as noted in the Amer
48、ican Welding Society WeldingHandbook. Tests and test values shall be as specified in 15.2and 15.3.15.2 Two reduced-section tension specimens made in accor-dance with Fig. 1, with the weld reinforcement removed, shallshow a tensile strength not less than 100 % of the minimumspecified tensile strength
49、 of the grade of steel used.15.3 Bend test specimens (two face-bend and two root-bendor four side-bend as designated by the welding procedureaccording to thickness) shall be prepared in accordance withFig. 2 and shall withstand being bent 180 in a jig substantiallyin accordance with Fig. 3. The bend test shall be acceptable ifno cracks or other defects exceeding18 in. 3.2 mm in anydirection are present in the weld metal or between the weld andthe pipe metal after bending. Cracks that o
