1、Designation: A 672 08Standard Specification forElectric-Fusion-Welded Steel Pipe for High-Pressure Serviceat Moderate Temperatures1This standard is issued under the fixed designation A 672; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification2covers steel pipe: electric-fusion-welded with filler metal added, fabricated f
3、rom pressure-vesselquality plate of any of several analyses and strength levels andsuitable for high-pressure service at moderate temperatures.Heat treatment may or may not be required to attain the desiredproperties or to comply with applicable code requirements.Supplementary requirements are provi
4、ded for use when addi-tional testing or examination is desired.1.2 The specification nominally covers pipe 16 in. (405mm) in outside diameter or larger with wall thicknesses up to3 in. (75 mm), inclusive. Pipe having other dimensions may befurnished provided it complies with all other requirements o
5、fthis specification.1.3 Several grades and classes of pipe are provided.1.3.1 Grade designates the type of plate used.1.3.2 Class designates the type of heat treatment performedduring manufacture of the pipe, whether the weld is radio-graphically examined, and whether the pipe has been pressureteste
6、d as listed in 1.3.3.1.3.3 Class designations are as follows (Note 1):Class Heat Treatment on PipeRadiography,see SectionPressure Test,see Section10 none none none11 none 9 none12 none 98.313 none none 8.320 stress relieved, see 5.3.1 none none21 stress relieved, see 5.3.1 9 none22 stress relieved,
7、see 5.3.1 9 8.323 stress relieved, see 5.3.1 none 8.330 normalized, see 5.3.2 none none31 normalized, see 5.3.2 9 none32 normalized, see 5.3.2 9 8.333 normalized, see 5.3.2 none 8.340 normalized and tempered, see 5.3.3 none none41 normalized and tempered, see 5.3.3 9 none42 normalized and tempered,
8、see 5.3.3 9 8.343 normalized and tempered, see 5.3.3 none 8.350 quenched and tempered, see 5.3.4 none none51 quenched and tempered, see 5.3.4 9 none52 quenched and tempered, see 5.3.4 9 8.353 quenched and tempered, see 5.3.4 none 8.3NOTE 1Selection of materials should be made with attention totemper
9、ature of service. For such guidance, SpecificationA 20/A 20M maybe consulted.1.4 The values stated in 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.2. Refer
10、enced Documents2.1 ASTM Standards:3A 20/A 20M Specification for General Requirements forSteel Plates for Pressure VesselsA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 435/A 435M Specification for Straight-Beam UltrasonicExamination of Steel PlatesA 530/A 530M Specificat
11、ion for General Requirements forSpecialized Carbon and Alloy Steel PipeA 577/A 577M Specification for Ultrasonic Angle-BeamExamination of Steel PlatesA 578/A 578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tionsE 109 Method for Dry Powder Magneti
12、c Particle Inspec-tion4E 138 Method for Wet Magnetic Particle Inspection4E110 Test Method for Indentation Hardness of MetallicMaterials by Portable Hardness TestersE 165 Test Method for Liquid Penetrant ExaminationE 709 Guide for Magnetic Particle Testing2.1.1 Plate Steel Specifications (Table 1)A 2
13、02/A 202M Specification for Pressure Vessel Plates,Alloy Steel, Chromium-Manganese-Silicon4A 204/A 204M Specification for Pressure Vessel Plates,1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Subcomm
14、itteeA01.09 on Carbon Steel Tubular Products.Current edition approved May 1, 2008. Published June 2008. Originallyapproved in 1972. Last previous edition approved in 2006 as A 672 06.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-672 in Section II of that Code.3
15、For 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.4Withdrawn.1*A Summary of Changes section appears at the end o
16、f this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Alloy Steel, MolybdenumA 285/A 285M Specification for Pressure Vessel Plates,Carbon Steel, Low- and Intermediate-Tensile StrengthA 299/A 299M Specification for Pressure V
17、essel Plates,Carbon Steel, Manganese-SiliconA 302/A 302M Specification for Pressure Vessel Plates,Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-NickelA 515/A 515M Specification for Pressure Vessel Plates,Carbon Steel, for Intermediate- and Higher-TemperatureServiceA 516/A 516M Specifica
18、tion for Pressure Vessel Plates,Carbon Steel, for Moderate- and Lower-Temperature Ser-viceA 533/A 533M Specification for Pressure Vessel Plates,Alloy Steel, Quenched and Tempered, Manganese-Molybdenum and Manganese-Molybdenum-NickelA 537/A 537M Specification for Pressure Vessel Plates,Heat-Treated,
19、Carbon-Manganese-Silicon Steel2.2 ASME Boiler and Pressure Vessel Code:5Section II, Material SpecificationsSection III, Nuclear VesselsSection VIII, Unfired Pressure VesselsSection IX, Welding Qualifications3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 A lot shall consist of
20、 200 ft (61 m) or fraction thereofof pipe from the same heat of steel.3.1.2 The description of a lot may be further restricted byuse of Supplementary Requirement S14.4. Ordering Information4.1 The inquiry and order for material under this specifica-tion should include the following information:4.1.1
21、 Quantity (feet, metres, or number of lengths),4.1.2 Name of material (steel pipe, electric-fusionwelded),4.1.3 Specification number,4.1.4 Grade and class designations (see 1.3),4.1.5 Size (inside or outside diameter, nominal or minimumwall thickness),4.1.6 Length (specific or random),4.1.7 End fini
22、sh (11.4),4.1.8 Purchase options, if any (see 5.2.3, 11.3, 14.1 andSections 16, 20.1, 21, 22 of Specification A 530/A 530M), and4.1.9 Supplementary requirements, if any, (refer to S1through S14).5. Materials and Manufacture5.1 MaterialsThe steel plate material shall conform to therequirements of the
23、 applicable plate specification for pipegrade ordered as listed in Table 1.5.2 Welding:5.2.1 The joints shall be double-welded, full-penetrationwelds made in accordance with procedures and by welders orwelding operators qualified in accordance with the ASMEBoiler and Pressure Vessel Code, Section IX
24、.5.2.2 The welds shall be made either manually or automati-cally by an electric process involving the deposition of fillermetal.5.2.3 The welded joint shall have positive reinforcement atthe center of each side of the weld, but not more than18 in.(3.2 mm). This reinforcement may be removed at the ma
25、nu-facturers option or by agreement between the manufacturerand purchaser. The contour of the reinforcement shall besmooth, and the deposited metal shall be fused smoothly anduniformly into the plate surface.5.2.4 When radiographic examination in accordance with9.1 is to be used, the weld reinforcem
26、ent shall be governed bythe more restrictive provisions of UW51 of Section VIII ofthe ASME Boiler and Pressure Vessel Code instead of 5.2.3 ofthis specification.5.3 Heat TreatmentAll classes other than 10, 11, 12 and13 shall be heat treated in furnace controlled to 6 25 F (14C) and equipped with a r
27、ecording pyrometer so that heating5Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.TABLE 1 Plate SpecificationPipe Grade Type of SteelASTM SpecificationNo. GradeA 45 plain carbon A 285/A 285M
28、 AA 50 plain carbon A 285/A 285M BA 55 plain carbon A 285/A 285M CB 60 plain carbon, killed A 515/A 515M 60B 65 plain carbon, killed A 515/A 515M 65B 70 plain carbon, killed A 515/A 515M 70C 55 plain carbon, killed, fine grain A 516/A 516M 55C 60 plain carbon, killed, fine grain A 516/A 516M 60C 65
29、plain carbon, killed, fine grain A 516/A 516M 65C 70 plain carbon, killed, fine grain A 516/A 516M 70D 70 manganese-siliconnormalizedA 537/A 537M 1D80 manganese-siliconQ for example, C 7010.13.2 Bar CodingIn addition to the requirements in 13.1,bar coding is acceptable as a supplemental identificati
30、onmethod. The purchaser may specify in the order a specific barcoding system to be used.SUPPLEMENTARY REQUIREMENTSOne or more of the following supplementary requirements shall be applied only when specified bythe purchaser in the inquiry, contract, or order. Details of these supplementary requiremen
31、ts shall beagreed upon in writing by the manufacturer and purchaser. Supplementary requirements shall in noway negate any requirement of the specification itself.S1. Tension and Bend TestsS1.1 Tension tests in accordance with 8.1 and bend tests inaccordance with 8.2 shall be made on specimens repres
32、entingeach length of pipe.S2. Charpy V-Notch Test (For pipe with nominal wallthickness of12 in. and greater)S2.1 RequirementsThe acceptable test energies shall be asshown in Table A1.15 of Specification A 20/A 20M for theapplicable plate specification unless otherwise stated in theorder.As an altern
33、ative, the test temperature may be 10 F (12C).S2.2 Number of SpecimensEach test shall consist of atleast three specimens.S2.2.1 One base-metal test shall be made from one pipelength per heat, per heat-treat charge, and per nominal wallthickness. For pipe from Classes 10, 11, 12, and 13, one basemeta
34、l test shall be made per heat per size and per wallthickness.S2.2.2 One weld-metal and one heat-affected zone (HAZ)metal test shall be made in accordance with NB 4335 ofSection III of the ASME Boiler and Pressure Vessel Code.S2.3 Test Specimen Location and Orientation:S2.3.1 Base-metal specimens of
35、stress-relieved, normalized,and normalized and tempered pipe shall be taken in accordancewith the provisions for tension specimens in the body of thisspecification.S2.3.2 Base-metal specimens of quenched and temperedpipe shall be taken in accordance with the provisions of NB2225 of Section III of th
36、e ASME Boiler and Pressure VesselCode.S3. Hardness TestS3.1 Hardness measurements in accordance with Test Meth-ods and DefinitionsA 370 or Test Method E110shall be madeacross the welded joint at both ends of each length of pipe. Themaximum acceptable hardness shall be as agreed upon betweenthe manuf
37、acturer and the purchaser.S4. Product AnalysisS4.1 Product analyses in accordance with 7.1 shall be madeon each 500 ft (152 m) of pipe or fraction thereof oralternatively, on each length of pipe as designated in the order.S5. MetallographyS5.1 The manufacturer shall furnish one photomicrographto sho
38、w the microstructure of 1003 magnification of the weldmetal or base metal of the pipe in the as-finished condition.Thepurchaser shall state in the order: the material, base metal orweld, and the number and locations of tests to be made. Thistest is for information only.S6. Magnetic Particle Examinat
39、ion of Base MetalS6.1 All accessible surfaces of the pipe shall be examined inaccordance with Methods E 109 or E 138. Accessible is de-fined as: All outside surfaces, all inside surfaces of pipe 24 in.(610 mm) in diameter and greater, and inside surfaces of pipeless than 24 in. in diameter for a dis
40、tance of one pipe diameterfrom the ends.S6.2 Acceptance StandardsThe following relevant indi-cations are unacceptable:S6.2.1 Any linear indications greater than116 in. (1.6 mm)long for materials less than58 in. (15.9 mm) thick; greater than18 in. (3.2 mm) long for materials58 in. thick to under 2 in
41、.(50.8 mm) thick; and greater than316 in. (4.8 mm) long formaterials 2 in. thick or greater.S6.2.2 Rounded indications with dimensions greater than18in. (3.2 mm) for thicknesses less than58 in. (15.9 mm) andgreater than316 in. (4.8 mm) for thicknesses58 in. and greater.S6.2.3 Four or more indication
42、s in any line separated by116in. (1.6 mm) or less edge-to-edge.S6.2.4 Ten or more indications in any 6 in.2(39 cm2)ofsurface with the major dimension of this area not to exceed 6in. (152 mm) when it is taken in the most unfavorableorientation relative to the indications being evaluated.A672085S7. Ma
43、gnetic Particle Examination of Weld MetalS7.1 All accessible weld shall be examined in accordancewith Practice E 709. Accessible is defined as: All outsidesurfaces, all inside surfaces of pipe less than 24 in. (610 mm)in diameter for a distance of one pipe diameter from the ends.S7.2 Acceptance Crit
44、eriaThe following relevant indica-tions are unacceptable:S7.2.1 Any cracks and linear indications.S7.2.2 Rounded indications with dimensions greater than316 in. (4.8 mm).S7.2.3 Four or more indications in any line separated116 in.(1.6 mm) or less edge-to-edge.S7.2.4 Ten or more indications in any 6
45、in.2(39 cm2)ofsurface with the major dimension of this area not to exceed 6in. (152 mm) when it is taken in the most unfavorableorientation relative to the indications being evaluated.S8. Liquid Penetrant Examination of Base MetalS8.1 All accessible surfaces of the pipe shall be examined inaccordanc
46、e with Test Method E 165.Accessible is as defined inS6.1.S8.2 The acceptance criteria shall be in accordance withS6.2.S9. Liquid Penetrant Examination of Weld MetalS9.1 All accessible surfaces of the pipe shall be examined inaccordance with Test Method E 165.Accessible is as defined inS7.1S9.2 The a
47、cceptance criteria shall be in accordance withS7.2S10. Straight Beam Ultrasonic Examination of FlatPlateUT 1S10.1 The plate shall be examined and accepted in accor-dance with Specification A 435/A 435M except that 100 % ofone surface shall be scanned by moving the search unit inparallel paths with n
48、ot less than 10 % overlap.S11. Straight Beam Ultrasonic Examination of FlatPlateUT 2S11.1 The plate shall be examined in accordance withSpecification A 578/A 578M except that 100 % of one surfaceshall be scanned and the acceptance criteria shall be as follows:S11.2 Any area, where one or more discon
49、tinuities producea continuous total loss of back reflection accompanied bycontinuous indications on the same plane that cannot beencompassed within a circle whose diameter is 3 in. (76.2 mm)or12 of the plate thickness, whichever is greater, is unaccept-able. In addition, two or more discontinuities on the same planeand having the same characteristics but smaller than describedabove shall be unacceptable unless separated by a minimumdistance equal to the largest diameter of the larger discontinuityor unless they may be collectively encompassed by th
