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ASTM A134 - 96 (2012).pdf

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ASTM A134 - 96 (2012).pdf

Designation A134 − 96 Reapproved 2012Standard Specification forPipe, Steel, Electric-Fusion Arc-Welded Sizes NPS 16 andOver1This standard is issued under the fixed designation A134; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers electric-fusion arc-weldedstraight seam or spiral seam steel pipe NPS 16 and over indiameter inside or outside as specified by purchaser, withwall thicknesses up to3⁄4 in. 19.0 mm, inclusive. Pipe havingother dimensions may be furnished provided such pipe com-plies with all other requirements of this specification.NOTE 1Acceptability for many services may be controlled by codesor standards such as those published by the American National StandardsInstitute and American Society of Mechanical Engineers.NOTE 2For testing methods not specifically covered in thisspecification, reference can be made to Test Methods and DefinitionsA370, with particular reference to Annex A2 on Steel Tubular Products.NOTE 3A comprehensive listing of standardized pipe dimensions iscontained in ANSI B 36.10.1.2 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.NOTE 4The dimensionless designator NPS nominal pipe size hasbeen substituted in this standard for such traditional terms as “nominaldiameter,” “size,” and “nominal size.”1.3 The following caveat pertains specifically to Section 5of this specification. This standard does not purport to addressall of the safety concerns, if any, associated with its use. It isthe responsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards2A36/A36M Specification for Carbon Structural SteelA283/A283M Specification for Low and Intermediate Ten-sile Strength Carbon Steel PlatesA285/A285M Specification for Pressure Vessel Plates, Car-bon Steel, Low- and Intermediate-Tensile StrengthA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA570/A570M Specification for Structural Steel, Sheet andStrip, Carbon, Hot-Rolled Withdrawn 200032.2 ASME Boiler and Pressure Vessel CodeSection IX Welding Qualifications42.3 American National Standards Institute StandardB 16.25 Buttwelding Ends5B 36.10 Welded and Seamless Wrought Steel Pipe53. Ordering Information3.1 Orders for material under this specification shouldinclude the following, as required, to describe the desiredmaterial adequately3.1.1 Quantity feet, metres, or number of lengths,3.1.2 Name of material electric-fusion arc-welded pipe,3.1.3 Grade Section 4,3.1.4 Size inside or outside diameter and nominal wallthickness,3.1.5 Length specified or random,3.1.6 Specific straightness requirements see 12.3,3.1.7 End finish Section 15,3.1.8 Hydrostatic test pressure Section 11,3.1.9 ASTM designation, and3.1.10 End use of material.4. Material4.1 The steel from which the pipe is made shall conform toSpecifications A283/A283M, A285/A285M, A570/A570M,orA36/A36M or to other ASTM specifications for equallysuitable weldable material, as specified. For purposes of1This specification is under 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, 2012. Published November 2012. Originallyapproved in 1931. Last previous edition approved in 2005 as A134 – 96 2005.DOI 10.1520/A0134-96R12.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American Society of Mechanical Engineers, 345 E. 47th St.New York, NY 10017.5Available from American National Standards Institute, 11 West 42nd St., 13thFloor, New York, NY 10036.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Copyright by ASTM Intl all rights reserved;marking and certification, when required, the pipe grade ofmaterial shall be established by the A xxx plate specificationdesignation and plate grade, when applicable.5. Manufacture5.1 The longitudinal edges of the steel shall be shaped togive the most satisfactory results by the particular weldingprocess employed. The steel shall then be properly formed andmay be tacked preparatory to welding. The weld shall be madeby automatic means except tack welds and shall be ofreasonably uniform width and height for the entire length of thepipe. By agreement between the purchaser and themanufacturer, manual welding by qualified procedure andwelders may be used as an equal alternate under this specifi-cation.5.2 All longitudinal seams, spiral seams, and shop girthseams shall be butt-welded.6. Number of Production Weld Tests6.1 One weld test specimen specified in Section 8 shall bemade from each lot of 3000 ft 900 m of pipe or fractionthereof of each size and wall thickness.6.2 If any test specimen shows defective machining ordevelops flaws not associated with the welding, it may bediscarded and another specimen substituted.6.3 Each length of pipe shall be subjected to the hydrostatictest specified in Section 11, unless otherwise specified in 11.3.7. Retests7.1 If any specimen tested in accordance with Section 10fails to meet the requirements, retests of two additionalspecimens from the same lot of pipe shall be made, each ofwhich shall meet the requirements specified. If any of theretests fail to conform to the requirements, test specimens maybe taken from each untested pipe length at the manufacturer’soption. Each specimen shall meet the requirements specified,or that pipe shall be rejected.8. Test Specimens of Production Welds8.1 The weld-test specimens for the reduced-section tensiontest shall be taken perpendicularly across the weld and from theend of the pipe or, alternatively, from flat test pieces of materialconforming to the requirements in the specifications used in themanufacture of the pipe. The alternative weld-test specimensshall be welded with the same procedure and by the sameoperator and equipment, and in sequence with the welding ofthe longitudinal joints in the pipe. The test pieces shall have theweld approximately in the middle of the specimen. Thespecimens shall be straightened cold, and shall be tested atroom temperature.8.2 Reduced-section tension-test specimens shall be pre-pared in accordance with Fig. 21 of Test Methods andDefinitions A370.9. Qualification of Welding Procedure9.1 The welding procedure shall be qualified in accordancewith the American Welding Society Standard QualificationProcedure6or ASME Section IX of the Boiler and PressureVessel Code as agreed to between the manufacturer and thepurchaser using the tests and test values specified in 9.2 and9.3. Thicknesses less than3⁄8 in. 10 mm shall be qualified foreach wall thickness of pipe manufactured. Thicknesses3⁄8 to3⁄4in. 10 mm to 19.0 mm, inclusive, shall be qualified in3⁄8-in.10-mm thickness.9.2 Two reduced-section tension specimens transverseweld made in accordance with Fig. 21 of Test Methods andDefinitions A370, with the weld reinforcement removed, shallshow a tensile strength not less than 100 of the minimumspecified tensile strength of the base material used.9.3 Two face-bend test specimens shall be prepared inaccordance with Fig. 2a of Test Methods and DefinitionsA370 and shall withstand being bent 180 in a jig substantiallyin accordance with Fig. 30 of Test Methods and DefinitionsA370. The bend test shall be acceptable if no cracks or otherdefects exceeding1⁄8 in. 3.2 mm in any direction be present inthe weld metal or between the weld and the pipe metal afterbending. Cracks that originate along the edges of the speci-mens during testing and that are less than1⁄4 in. 6.3 mm inany direction, shall not be considered.10. Tensile Properties of Production Welds10.1 Reduced-section tension test specimens required inSection 8, taken perpendicularly across the weld with the weldreinforcement removed, shall show a tensile strength not lessthan 95 of the specified minimum strength of the steel. Atthe manufacturer’s option, the test may be made withoutremoving the weld reinforcement, in which case the tensilestrength shall be not less than the specified minimum tensilestrength for the grade of steel used.11. Hydrostatic Test Note 511.1 Each length of pipe shall be tested by the manufacturerto a hydrostatic pressure that will produce in the pipe wall astress of 60 of the specified minimum yield point of the steelused at room temperature. The pressure shall be determined bythe following equationP 5 2St/DwhereP minimum hydrostatic test pressure, psi Note 6 not toexceed 2800 psi 19 MPa,S 0.60 times the minimum specified yield point of thesteel used, psi MPa,t specified wall thickness, in. mm, andD specified outside diameter, in. mm.NOTE 5A hydrostatic sizing operation is not to be considered ahydrostatic test or a substitute for it.NOTE 6When the diameter and wall thickness of pipe are such that thecapacity limits of testing equipment are exceeded by these requirements,the test pressures may be reduced by agreement between the purchaser andthe manufacturer.6Available from American Welding Society, 550 N.W. LeJeune Rd., Miami, FL33135.A134 − 96 20122Copyright by ASTM Intl all rights reserved;11.2 Test pressure shall be held for not less than 5 s, or fora longer time as agreed upon between the purchaser and themanufacturer.NOTE 7When agreed upon between the purchaser and the manufac-turer and so stated on the order, pipe may be tested to one and one halftimes the specified working pressure, except that the maximum testpressure shall not exceed 2800 psi 19 MPa nor shall the maximum fiberstress exceed 85 of specified minimum yield point of steel or to a fiberstress that does not exceed 85 of the specified minimum yield point ofthe steel or 2800-psi 19-MPa test pressure.11.3 When specified in the order, pipe may be furnishedwithout hydrostatic testing and each length so furnished shallinclude the mandatory marking of the letters “NH.”Additionally, the certification, when required, shall state “NotHydrostatically Tested” and the specification number andmaterial grade, as shown on the certification, shall be followedby the letters “NH.”12. Permissible Variations in Weights and Dimensions12.1 Thickness and WeightThe wall thickness and weightfor welded pipe under this specification shall be governed bythe requirements of the specifications to which the steel wasordered.12.2 CircumferenceThe outside circumference of the pipeshall not vary more than 60.5 from the nominal outsidecircumference based upon the diameter specified, except thatthe circumference at ends shall be sized, if necessary, to meetthe requirements of Section 14.12.3 StraightnessFinished pipe shall be commerciallystraight. When specific straightness requirements are desired,the order should so state, and the tolerances shall be a matter ofagreement between the purchaser and the manufacturer.12.4 OvalityOut-of-roundnessThe difference betweenmajor and minor outside diameter shall not exceed 1 . Closertolerances may be established by agreement between themanufacturer and the purchaser. Where the D/T outsidediameter/wall thickness is over 120, internal bracing should beutilized to achieve sizing of ends and ovality shall be byagreement between the manufacturer and purchaser.13. Lengths13.1 Pipe lengths shall be supplied in accordance with thefollowing regular practice13.1.1 The lengths shall be as specified on the order with atolerance of 61⁄2 in. 13 mm, except that the shorter lengthsfrom which test coupons have been cut may also be shipped.13.1.2 When random lengths are specified, pipe shall befurnished in lengths having a minimum average of 29 ft 9 mwith a minimum length of 20 ft 6 m, but not more than 5 may be under 25 ft 8 m.13.2 Pipe lengths containing circumferentially welded jointsNote 8 shall be permitted by agreement between the manu-facturer and the purchaser. Tests of these welded joints shall bemade in accordance with the procedure tests specified inSection 9 and the production weld tests specified in Section 10.The number of production weld tests shall be one per each lotof 100 joints or fraction thereof, but not less than one for eachwelder or welding operator.NOTE 8Joints are defined for the purpose of this specification as acircumferential welded seam lying in one plane, used to join lengths ofstraight pipe.14. Ends14.1 Pipe shall be furnished with a plain right-angle cut orwith bevel ends as specified. All burrs at the ends of pipe shallbe removed.14.1.1 Unless otherwise specified, pipe with beveled endsshall meet the requirements of ANSI B 16.25.14.2 Unless otherwise specified, the outside circumferenceof pipe ends for a distance of not less than 4 in. 100 mm shallnot vary more than 660 of the nominal wall thickness of thepipe from the nominal outside circumference based on thediameter specified, except that the tolerance shall not be lessthan 63⁄16 in. 5 mm.14.3 By agreement between the manufacturer and the pur-chaser the ends of the pipe may be sized within agreed-upontolerances if necessary to meet the requirements of specialinstallations.15. Finish15.1 Repair by WeldingThe welding of injurious defectsin the pipe wall, provided their depth does not exceed one thirdthe specified wall thickness, will be permitted. Defects in thewelds, such as sweats or leaks, shall be repaired or the piecerejected at the option of the manufacturer. Repairs of thisnature shall be made by completely removing the defect,cleaning the cavity, and then welding.15.2 All repaired pipe shall be tested hydrostatically inaccordance with Section 11, unless otherwise specified in 11.3.16. Inspection16.1 The inspector representing the purchaser shall haveentry at all times while work on the contract of the purchaseris being performed, to all parts of the manufacturer’s worksthat concern the manufacture of the material ordered. Themanufacturer shall afford the inspector all reasonable facilitiesto satisfy him that the material is being furnished in accordancewith this specification.All tests and inspection shall be m

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