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Designation: A 671 – 04
Standard Specification for
Electric-Fusion-Welded Steel Pipe for Atmospheric and
Lower Temperatures
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This standard is issued under the fixed designation A 671; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year 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.
1. Scope* 1.1 This specification^2 covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at atmospheric and lower temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired. 1.2 The specification nominally covers pipe 16 in. ( mm) in outside diameter or larger and of 1 ⁄ 4 in. (6.4 mm) wall thickness or greater. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification. 1.3 Several grades and classes of pipe are provided. 1.3.1 Grade designates the type of plate used as listed in 5.1. 1.3.2 Class designates the type of heat treatment performed during manufacture of the pipe, whether the weld is radio- graphically examined, and whether the pipe has been pressure tested as listed in 1.3.3. 1.3.3 Class designations are as follows (Note 1): Class Heat Treatment on Pipe Radiography, see Section
Pressure Test, see: 10 none none none 11 none 9 none 12 none 9 8. 13 none none 8. 20 stress relieved, see 5.3.1 none none 21 stress relieved, see 5.3.1 9 none 22 stress relieved, see 5.3.1 9 8. 23 stress relieved, see 5.3.1 none 8. 30 normalized, see 5.3.2 none none 31 normalized, see 5.3.2 9 none 32 normalized, see 5.3.2 9 8. 33 normalized, see 5.3.2 none 8. 40 normalized and tempered, see 5.3.3 none none 41 normalized and tempered, see 5.3.3 9 none 42 normalized and tempered, see 5.3.3 9 8. 43 normalized and tempered, see 5.3.3 none 8.
50 quenched and tempered, see 5.3.4 none none 51 quenched and tempered, see 5.3.4 9 none 52 quenched and tempered, see 5.3.4 9 8. 53 quenched and tempered, see 5.3.4 none 8. 60 normalized and precipitation heat treated
none none 61 normalized and precipitation heat treated
9 none 62 normalized and precipitation heat treated
9 8. 63 normalized and precipitation heat treated
none 8. 70 quenched and precipitation heat treated
none none 71 quenched and precipitation heat treated
9 none 72 quenched and precipitation heat treated
9 8. 73 quenched and precipitation heat treated
none 8.
NOTE 1—Selection of materials should be made with attention to temperature of service. For such guidance, Specification A 20/A 20M may be consulted. 1.4 The values stated in inch-pound units are to be regarded as the standard.
2. Referenced Documents 2.1 ASTM Standards:^3 A 20/A 20M Specification for General Requirements for Steel Plates for Pressure Vessels A 370 Test Methods and Definitions for Mechanical Testing of Steel Products A 435/A 435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates A 530/A 530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe A 577/A 577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates A 578/A 578M Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for Special Applications E 110 Test Method for Indentation Hardness of Metallic (^1) This specification is under the jurisdiction of ASTM Committee A01 on Steel, Materials by Portable Hardness Testers Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee A01.09 on Carbon Steel Tubular Products. Current edition approved May 1, 2004. Published May 2004. Originally approved in 1972. Last previous edition approved in 2001 as A 671 – 96(2001). (^2) For ASME Boiler and Pressure Vessel Code applications see related Specifi- cation SA-671 in Section II of that Code.
(^3) For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website.
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*A Summary of Changes section appears at the end of this standard. Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E 165 Test Method for Liquid Penetrant Examination E 709 Guide for Magnetic Particle Examination 2.2 Plate Steels: A 203/A 203M Specification for Pressure Vessel Plates, Al- loy Steel, Nickel A 285/A 285M Specification for Pressure Vessel Plates, Carbon Steel, Low- and Intermediate-Tensile Strength A 299/A 299M Specification for Pressure Vessel Plates, Carbon Steel, Manganese-Silicon A 353/A 353M Specification for Pressure Vessel Plates, Al- loy Steel, 9 Percent Nickel, Double-Normalized and Tempered A 442/A 442M Specification for Pressure Vessel Plates, Carbon Steel, Improved Transition Properties^4 A 515/A 515M Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate-and Higher-Temperature Service A 516/A 516M Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Ser- vice A 517/A 517M Specification for Pressure Vessel Plates, Al- loy Steel, High-Strength, Quenched and Tempered A 537/A 537M Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel A 553/A 553M Specification for Pressure Vessel Plates, Al- loy Steel, Quenched and Tempered 8 and 9 Percent Nickel A 736/A 736M Specification for Pressure Vessel Plates, Low-Carbon Age-Hardening, Nickel-Copper-Chromium- Molybdenum-Columbium and Nickel-Copper- Manganese-Molybdenum-Columbium Alloy Steel 2.3 ASME Boiler and Pressure Vessel Code:^5 Section II, Material Specifications Section III, Nuclear Vessels Section VIII, Unfired Pressure Vessels Section IX, Welding Qualifications
3. Terminology 3.1 Definitions of Terms Specific to This Standard: 3.1.1 lot —a lot shall consist of 200 ft (61 m) or fraction thereof of pipe from the same heat of steel. 3.1.2 The description of a lot may be further restricted by the use of Supplementary Requirement S14. 4. Ordering Information 4.1 The inquiry and order for material under this specifica- tion should include the following information: 4.1.1 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 minimum wall thickness), 4.1.6 Length (specific or random), 4.1.7 End finish (11.4),
4.1.8 Purchase options, if any (see 5.2.3 and 11.3 of this specification. See also Specification A 530/A 530M), 4.1.9 Supplementary requirements, if any.
5. Materials and Manufacture 5.1 Materials —The steel plate material shall conform to the requirement of the applicable plate specification for the pipe grade ordered as listed in Table 1. 5.2 Welding : 5.2.1 The joints shall be double-welded, full-penetration welds made in accordance with procedures and by welders or welding operators qualified in accordance with the ASME Boiler and Pressure Vessel Code, Section IX. 5.2.2 The welds shall be made either manually or automati- cally by an electric process involving the deposition of filler metal. 5.2.3 As welded, the welded joint shall have positive reinforcement at the center of each side of the weld, but no more than 1 ⁄ 8 in. (3.2 mm). This reinforcement may be removed at the manufacturer’s option or by agreement between the manufacturer and purchaser. The contour of the reinforcement shall be smooth and the deposited metal shall be fused smoothly and uniformly into the plate surface. 5.2.4 When radiographic examination in accordance with 9.1 is to be used, the weld reinforcements shall be governed by
(^4) Withdrawn. (^5) Available from ASME International, Three Park Avenue, New York, NY 10016–5990..
TABLE 1 Plate Specifications Pipe Grade Type of Steel ASTM Specification No. Grade CA 55 plain carbon A 285/A 285M C CB 60 plain carbon, killed A 515/A 515M 60 CB 65 plain carbon, killed A 515/A 515M 65 CB 70 plain carbon, killed A 515/A 515M 70 CC 60 plain carbon, killed, fine grain A 516/A 516M 60 CC 65 plain carbon, killed, fine grain A 516/A 516M 65 CC 70 plain carbon, killed, fine grain A 516/A 516M 70 CD 70 manganese-silicon, normalized A 537/A 537M 1 CD 80 manganese-silicon, quenched and tempered
A 537/A 537M 2 CE 55 plain carbon A 442/A 442M 55 CE 60 plain carbon A 442/A 442M 60 CF 65 nickel steel A 203/A 203M A CF 70 nickel steel A 203/A 203M B CF 66 nickel steel A 203/A 203M D CF 71 nickel steel A 203/A 203M E CG 100 9 % nickel A 353/A 353M CH 100 9 % nickel A 553/A 553M 1 CJ 101 alloy steel, quenched and tempered A 517/A 517M A CJ 102 alloy steel, quenched and tempered A 517/A 517M B CJ 103 alloy steel, quenched and tempered A 517/A 517M C CJ 104 alloy steel, quenched and tempered A 517/A 517M D CJ 105 alloy steel, quenched and tempered A 517/A 517M E CJ 106 alloy steel, quenched and tempered A 517/A 517M F CJ 107 alloy steel, quenched and tempered A 517/A 517M G CJ 108 alloy steel, quenched and tempered A 517/A 517M H CJ 109 alloy steel, quenched and tempered A 517/A 517M J CJ 110 alloy steel, quenched and tempered A 517/A 517M K CJ 111 alloy steel, quenched and tempered A 517/A 517M L CJ 112 alloy steel, quenched and tempered A 517/A 517M M CJ 113 alloy steel, quenched and tempered A 517/A 517M P CK 75 carbon-manganese-silicon A 299/A 299M CP65 alloy steel, age hardening, normalized and precipitation heat treated
A 736/A 736M 2 CP75 alloy steel, age hardening, quenched and precipitation heat treated
A 736/A 736M 3
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7. Chemical Composition 7.1 Product Analysis of Plate —The pipe manufacturer shall make an analysis of each mill heat of plate material. The product analysis so determined shall meet the requirements of the plate specification to which the material was ordered. 7.2 Product Analyses of Weld —The pipe manufacturer shall make an analysis of finished deposited weld material from each 200 ft (61 m) or fraction thereof. Analyses shall conform to the welding procedure for deposited weld metal. 7.3 Analysis may be taken from the mechanical test speci- mens. The results of the analyses shall be reported to the purchaser. 8. Mechanical Requirements 8.1 Tension Test : 8.1.1 Requirements— —Transverse tensile properties of the welded joint shall meet the minimum requirements for ultimate tensile strength of the specified plate material. In addition for Grades CD and CJ, when these are of Class 3x, 4x, or 5x, and Grade CP of Class 6x and 7x, the transverse tensile properties of the base plate shall be determined on specimens cut from the heat-treated pipe. These properties shall meet the mechanical test requirements of the plate specification. 8.1.2 Number of Tests —One test specimen of weld metal and one specimen of base metal, if required by 8.1.1, shall be made and tested to represent each lot of finished pipe. 8.1.3 Test Specimen Location and Orientation —The test specimens shall be taken transverse to the weld at the end of the finished pipe and may be flattened cold before final machining to size. 8.1.4 Test Method —The test specimen shall be made in accordance with QW-150 in Section IX of the ASME Boiler and Pressure Vessel Code. The test specimen shall be tested at room temperature in accordance with Test Methods and Defi- nitions A 370. 8.2 Transverse Guided Weld Bend Test : 8.2.1 Requirements —The bend test shall be acceptable if no cracks or other defects exceeding 1 ⁄ 8 in. (3.2 mm) in any direction are present in the weld metal or between the weld and the base metal after bending. Cracks that originate along the edges of the specimen during testing, and that are less than 1 ⁄ 4 in. (6.4 mm) measured in any direction shall not be considered. 8.2.2 Number of Tests —One test (two specimens) shall be made to represent each lot of finished pipe. 8.2.3 Test Specimen Location and Orientation —Two bend test specimens shall be taken transverse to the weld at the end of the finished pipe. As an alternative, by agreement between the purchaser and the manufacturer, the test specimens may be taken from a test plate of the same material as the pipe, the test plate being attached to the end of the cylinder and welded as a prolongation of the pipe longitudinal seam. 8.2.4 Test Method —The test requirements of A 370, S9.1. shall be met. For wall thicknesses over 3 ⁄ 8 in. (9.5 mm) but less than 3 ⁄ 4 in. (19.0 mm) side-bend tests may be made instead of the face and root-bend tests. For wall thicknesses 3 ⁄ 4 in. and over both specimens shall be subjected to the side-bend test. 8.3 Pressure Test —Classes X2 and X3 pipe shall be tested in accordance with Specification A 530/A 530M, Section 6. 9. Radiographic Examination 9.1 The full length of each weld of Classes X1 and X2 shall be radiographically examined in accordance with and meet the requirements of ASME Boiler and Pressure Vessel Code, Section VIII, Paragraph UW–51. 9.2 Radiographic examination may be performed prior to heat treatment. 10. Rework 10.1 Elimination of Surface Imperfections —Unacceptable surface imperfections shall be removed by grinding or machin- ing. The remaining thickness of the section shall be no less than the minimum specified in Section 11. The depression after grinding or machining shall be blended uniformly into the surrounding surface. 10.2 Repair of Base Metal Defects by Welding : 10.2.1 The manufacturer may repair, by welding, base metal where defects have been removed, provided the depth of the repair cavity as prepared for welding does not exceed 1 ⁄ 3 of the nominal thickness and the requirements of 10.2.2, 10.2.3, 10.2.4, 10.2.5 and 10.2.6 are met. Base metal defects in excess of these may be repaired with prior approval of the customer. 10.2.2 The defect shall be removed by suitable mechanical or thermal cutting or gouging methods and the cavity prepared for repair welding. 10.2.3 The welding procedure and welders or welding operators are to be qualified in accordance with Section IX of the ASME Boiler and Pressure Vessel Code. 10.2.4 The full length of the repaired pipe shall be heat treated after repair in accordance with the requirements of the pipe class specified. 10.2.5 Each repair weld of a defect where the cavity, prepared for welding, has a depth exceeding the lesser of 3 ⁄ 8 in. (9.5 mm) or 10 % of the nominal thickness shall be examined by radiography in accordance with the methods and the acceptance standards of Section 9. 10.2.6 The repair surface shall be blended uniformly into the surrounding base metal surface and examined and accepted in accordance with Supplementary Requirements S6 or S8. 10.3 Repair of Weld Metal Defects by Welding : 10.3.1 The manufacturer may repair weld metal defects if he meets the requirements of 10.2.3, 10.2.4, 10.3.2, 10.3.3 and 10.4. 10.3.2 The defect shall be removed by suitable mechanical or thermal cutting or gouging methods and the repair cavity examined and accepted in accordance with Supplementary Requirements S7 or S9. 10.3.3 The weld repair shall be blended uniformly into the surrounding metal surfaces and examined and accepted in accordance with 9.1 and with Supplementary Requirements S or S9. 10.4 Retest —Each length of repaired pipe of a class requir- ing a pressure test shall be hydrostatically tested following repair.
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11. Dimensions, Mass and Permissible Variations 11.1 The wall thickness and weight for welded pipe fur- nished to this specification shall be governed by the require- ments of the specification to which the manufacturer ordered the plate. 11.2 Permissible variations in dimensions at any point in a length of pipe shall not exceed the following: 11.2.1 Outside Diameter —Based on circumferential mea- surement 6 0.5 % of the specified outside diameter. 11.2.2 Out-of-Roundness —Difference between major and minor outside diameters, 1 %. 11.2.3 Alignment —Using a 10-ft (3-m) straight edge placed so that both ends are in contact with the pipe, 1 ⁄ 8 in. (3.2 mm). 11.2.4 Thickness —The minimum wall thickness at any point in the pipe shall not be more than 0.01 in. (0.25 mm) under the specified nominal thickness. 11.3 Circumferential welded joints of the same quality as the longitudinal joints shall be permitted by agreement between the manufacturer and the purchaser.
11.4 Lengths with unmachined ends shall be within −0, +^1 ⁄ 2 in. (−0, +13 mm) of that specified. Lengths with machined ends shall be as agreed between the manufacturer and the purchaser.
12. Workmanship, Finish, and Appearance 12.1 The finished pipe shall be free of injurious defects and shall have a workmanlike finish. This requirement is to mean the same as the identical requirement that appears in Specifi- cation A 20/A 20M with respect to steel plate surface finish. 13. Product Marking 13.1 In addition to the marking provision of Specification A 530/A 530M, class marking in accordance with 1.3.3 shall follow the grade marking, for example, CC 70–10. 13.2 Bar Coding —In addition to the requirements in 13.1, bar coding is acceptable as a supplemental identification method. The purchaser may specify in the order a specific bar coding system to be used.
SUPPLEMENTARY REQUIREMENTS
One or more of the following supplementary requirements shall be applied only when specified by the purchaser in the inquiry, contract, or order. Details of these supplementary requirements shall be agreed upon in writing by the manufacturer and purchaser. Supplementary requirements shall in no way negate any requirement of the specification itself.
S1. Tension and Bend Tests S1.1 Tension tests in accordance with 8.1 and bend tests in accordance with 8.2 shall be made on specimens representing each length of pipe.
S2. Charpy V-Notch Test S2.1 Requirements— The acceptable test energies for mate- rial shown in Specification A 20/A 20M shall conform to the energy values shown in Specification A 20/A 20M. S2.1.1 Materials not listed in Specification A 20/A 20M shall be in accordance with the purchase order requirements. S2.2 Number of Specimens— Each test shall consist of at least three specimens. S2.2.1 One base metal test shall be made from one pipe length per heat-treat charge per nominal wall thickness. For pipe from Classes 10, 11, 12, and 13, one base metal test shall be made per heat per size and per wall thickness. S2.2.2 One weld-metal test shall be made in accordance with UG–84 of Section VIII of the ASME Boiler and Pressure Vessel Code. S2.2.3 One heat-affected-zone test shall be made in accor- dance with UG–84 of Section VIII of the ASME Boiler and Pressure Vessel Code. S2.3 Test Specimen Location and Orientation: S2.3.1 Specimens for base-metal tests in Grades CA, CB, CC, and CE in the as rolled stress relieved or normalized condition (classes of the 10, 20, 30, and 40 series) shall be
taken so that the longitudinal axis of the specimen is parallel to the longitudinal axis of the pipe. S2.3.2 Base-metal specimens of quench and tempered pipe, when the quenching and tempering follows the welding opera- tion, shall be taken in accordance with the provision of N of Section III of the ASME Boiler and Pressure Vessel Code. S2.4 Test Method— The specimen shall be Charpy-V Type A in accordance with Test Methods and Definitions A 370. The specimens shall be tested in accordance with Test Methods and Definitions A 370. Unless otherwise indicated by the pur- chaser, the test temperature shall be as given in Specification A 20/A 20M for those base materials covered by Specification A 20/A 20M. For materials not covered by Specification A 20/ A 20M the test temperature shall be 10°F (−12°C) unless otherwise stated in the purchase order.
S3. Hardness Test S3.1 Hardness tests shall be made in accordance with Test Methods and Definitions A 370 or Test Method E 110 across the welded joint of both ends of each length of pipe. In addition, hardness tests shall be made to include the heat- affected zone if so required by the purchaser. The maximum acceptable hardness shall be as agreed upon between the manufacturer and the purchaser.
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heat of plate material and wall thickness (within 61 ⁄ 4 in. (6. mm)), subjected to the same heat treatment. For pipe heat treated in a batch-type furnace that is automatically controlled
within a 50°F (28°C) range and is equipped with recording pyrometers so that heating records are available, a lot shall be defined the same as for continuous furnaces.
SUMMARY OF CHANGES
Committee A01 has identified the location of selected changes to this specification since the last issue, A 671 – 96(2001), that may impact the use of this specification. (Approved May 1, 2004)
( 1 ) Tables 1 and 2 were revised to include pipe grades CG 100 and CH 100.
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