A 53 – a 53 m – 02 qtuzl0e1m00_

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1. Designation: A 53/A 53M – 02 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless1 This standard is issued under the…

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  • 1. Designation: A 53/A 53M – 02 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless1 This standard is issued under the fixed designation A 53/A 53M; 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. This standard has been approved for use by agencies of the Department of Defense. 1. Scope * 1.1 This specification2 covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1⁄8 to NPS 26 [DN 6 to DN 650] (Note 1), inclusive, with nominal wall thickness (Note 2) as given in Table X2.2 and Table X2.3. It shall be permissible to furnish pipe having other dimensions (Note 2) provided such pipe complies with all other requirements of this specification. NOTE 1—The dimensionless designators NPS (nominal pipe size) [DN (diameter nominal)] have been substituted in this specification for such traditional terms as “nominal diameter,” “size,” and “nominal size.” NOTE 2—The term nominal wall thickness has been assigned for the purpose of convenient designation, existing in name only, and is used to distinguish it from the actual wall thickness, which may vary over or under the nominal wall thickness. 1.2 This specification covers the following types and grades: 1.2.1 Type F—Furnace-butt welded, continuous welded Grade A, 1.2.2 Type E—Electric-resistance welded, Grades A and B, and 1.2.3 Type S—Seamless, Grades A and B. NOTE 3—See Appendix X1 for definitions of types of pipe. 1.3 Pipe ordered under this specification is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas, and air lines. It is suitable for welding, and suitable for forming operations involving coiling, bending, and flanging, subject to the following quali- fications: 1.3.1 Type F is not intended for flanging. 1.3.2 When Types S and E are required for close coiling or cold bending, Grade A is the preferred grade. This provision is not intended to prohibit the cold bending of Grade B pipe. 1.3.3 Type E is furnished either nonexpanded or cold expanded at the option of the manufacturer. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 The following precautionary caveat pertains only to the test method portion, Sections 9, 10, 11, 15, 16, and 17 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use. 1.6 The text of this specification contains notes or footnotes, or both, that provide explanatory material. Such notes and footnotes, excluding those in tables and figures, do not contain any mandatory requirements. 2. Referenced Documents 2.1 ASTM Standards: A 90/A 90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings3 A 370 Test Methods and Definitions for Mechanical Testing of Steel Products4 A 530/A 530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe5 A 700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment6 A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products4 A 865 Specification for Threaded Couplings, Steel, Black or Zinc-Coated (Galvanized) Welded or Seamless, for Use in Steel Pipe Joints5 B 6 Specification for Zinc7 1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee A01.09 on Carbon Steel Tubular Products. Current edition approved Oct. 10, 2002. Published November 2002. Originally published as A 53 – 15. Last previous edition A 53/A 53M – 01. 2 For ASME Boiler and Pressure Vessel Code applications, see related Specifi- cation SA-53 in Section II of that code. 3 Annual Book of ASTM Standards, Vol 01.06. 4 Annual Book of ASTM Standards, Vol 01.03. 5 Annual Book of ASTM Standards, Vol 01.01. 6 Annual Book of ASTM Standards, Vol 01.05. 7 Annual Book of ASTM Standards, Vol 02.04. 1 *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.
  • 2. E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications8 E 213 Practice for Ultrasonic Examination of Metal Pipe and Tubing9 E 309 Practice for Eddy-Current Examination of Steel Tu- bular Products Using Magnetic Saturation9 E 570 Practice for Flux Leakage Examination of Ferromag- netic Steel Tubular Products9 E 1806 Practice for Sampling Steel and Iron for Determi- nation of Chemical Composition10 2.2 ANSI Standards: ASC X1211 B1.20.1 Pipe Threads, General Purpose11 2.3 ASME Standard: B36.10 Welded and Seamless Wrought Steel Pipe12 2.4 Military Standards: MIL-STD-129 Marking for Shipment and Storage13 MIL-STD-163 Steel Mill Products Preparation for Ship- ment and Storage13 2.5 Federal Standards: Fed. Std. No. 123 Marking for Shipment (Civil Agencies)14 Fed. Std. No 183 Continuous Identification Marking of Iron and Steel Products14 2.6 API Standard: 5L Specification for Line Pipe15 3. Ordering Information 3.1 Information items to be considered, if appropriate, for inclusion in the purchase order are as follows: 3.1.1 Specification designation (A 53 or A 53M, including year of issue), 3.1.2 Quantity (feet, metres, or number of lengths), 3.1.3 Grade (see Table 1), 3.1.4 Type (see 1.2 and Table 2), 3.1.5 Finish (black or galvanized), 3.1.6 Size (either nominal (NPS) [DN] and weight class or schedule number, or both; or outside diameter and nominal wall thickness, Table X2.2 and Table X2.3), 3.1.7 Length (specific or random, Section 18), 3.1.8 End finish (plain end or threaded, Section 13), 3.1.8.1 Threaded and coupled, if desired, 3.1.8.2 Threads only (no couplings), if desired, 3.1.8.3 Plain end, if desired, 3.1.8.4 Couplings power tight, if desired, 3.1.8.5 Taper tapped couplings for NPS 2 [DN 50] and smaller, if desired, 3.1.9 Close coiling, if required (see 8.2), 3.1.10 Skelp for tension tests, if permitted (see 17.2), 3.1.11 Certification (see Section 22), 3.1.12 End use of material, 3.1.13 Special requirements, and 3.1.14 Selection of applicable level of preservation and packaging and level of packing required, if other than as specified or if MIL-STD-163 applies (see 21.2). 4. Materials and Manufacture 4.1 The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric-furnace, or basic-oxygen. 4.2 When steels of different grades are sequentially strand cast, identification of the resultant transition material is re- quired. The producer shall remove the transition material by any established procedure that positively separates the grades. 4.3 The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding to a minimum of 1000°F [540°C] so that no untempered martensite remains, or otherwise processed in such a manner that no untempered martensite remains. 4.4 When pipe is cold expanded, the amount of expansion shall not exceed 11⁄2 % of the outside diameter pipe size. 8 Annual Book of ASTM Standards, Vol 14.02. 9 Annual Book of ASTM Standards, Vol 03.03. 10 Annual Book of ASTM Standards, Vol 03.06. 11 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036. 12 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990. 13 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098 14 Available from General Services Administration, Washington, DC 20405. 15 Available from The American Petroleum Institute (API), 1220 L. St., NW, Washington, DC 20005. TABLE 1 Chemical Requirements Composition, max, % Carbon Manganese Phosphorus Sulfur CopperA NickelA ChromiumA MolybdenumA VanadiumA Type S (seamless pipe) Open-hearth, electric-furnace or basic-oxygen: Grade A 0.25 0.95 0.05 0.045 0.40 0.40 0.40 0.15 0.08 Grade B 0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08 Type E (electric-resistance-welded) Open-hearth, electric-furnace or basic-oxygen: Grade A 0.25 0.95 0.05 0.045 0.40 0.40 0.40 0.15 0.08 Grade B 0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08 Type F (furnace-welded pipe) Open-hearth, electric-furnace, or basic oxygen Grade A 0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08 A The combination of these five elements shall not exceed 1.00 %. A 53/A 53M – 02 2
  • 3. 5. Chemical Composition 5.1 The steel shall conform to the requirements as to chemical composition in Table 1 and the chemical analysis shall be in accordance with Test Methods, Practices, and Terminology A 751. 6. Product Analysis 6.1 The purchaser is permitted to perform an analysis of two pipes from each lot of 500 lengths, or fraction thereof. Samples for chemical analysis, except for spectrographic analysis, shall be taken in accordance with Practice E 1806. The chemical composition thus determined shall conform to the requirements specified in Table 1. 6.2 If the analysis of either pipe does not conform to the requirements specified in Table 1, analyses shall be made on additional pipes of double the original number from the same lot, each of which shall conform to the requirements specified. 7. Tensile Requirements 7.1 The material shall conform to the requirements as to tensile properties prescribed in Table 2. 7.2 The yield strength corresponding to a permanent offset of 0.2 % of the gage length of the specimen or to a total extension of 0.5 % of the gage length under load shall be determined. 7.3 The test specimen taken across the weld shall show a tensile strength not less than the minimum tensile strength specified for the grade of pipe ordered. This test will not be required for pipe under NPS 8 [DN 200]. 7.4 Transverse tension test specimens for electric-welded pipe NPS 8 [DN 200] and larger shall be taken opposite the weld. All transverse test specimens shall be approximately 11⁄2 in. [40 mm] wide in the gage length, and shall represent the full wall thickness of the pipe from which the specimen was cut. This test is required for NPS 8 [DN 200] and larger. 8. Bending Requirements 8.1 For pipe NPS 2 [DN 50] and under, a sufficient length of pipe shall be capable of being bent cold through 90° around a cylindrical mandrel, the diameter of which is twelve times the outside diameter of the pipe, without developing cracks at any portion and without opening the weld. 8.2 When ordered for close coiling, the pipe shall stand being bent cold through 180° around a cylindrical mandrel, the diameter of which is eight times the outside diameter of the pipe, without failure. 8.3 Double-extra-strong pipe over NPS 11⁄4 [DN 32] need not be subjected to the bend test. 9. Flattening Test 9.1 The flattening test shall be made on pipe over NPS 2 [DN 50] with all thicknesses extra strong and lighter. 9.2 Seamless Pipe: 9.2.1 For seamless pipe, a test specimen at least 2 1⁄2 in. [60 mm] in length shall be flattened cold between parallel plates in two steps. During the first step, which is a test for ductility, no cracks or breaks on the inside, outside, or end surfaces, except as provided for in 9.7, shall occur until the distance between the plates is less than the value of H calculated as follows: H 5 ~1 1e!t/~e 1 t/D! where: H = distance between flattening plates, in. [mm] (Note 4), e = deformation per unit length (constant for a given grade of steel, 0.09 for Grade A, and 0.07 for Grade B), t = nominal wall thickness, in. [mm], and D = specified outside diameter, in. [mm] 9.2.2 During the second step, which is a test for soundness, the flattening shall be continued until the test specimen breaks or the opposite sides of the pipe meet. Evidence of laminated or unsound material that is revealed during the entire flattening test shall be cause for rejection. NOTE 4—The H values have been calculated for standard and extra- heavy weight sizes from NPS 21⁄2 to NPS 24 [DN 65 to DN 600], inclusive, and are shown in Table X2.1. 9.3 Electric-Resistance-Welded Pipe— A test specimen at least 4 in. [100 mm] in length shall be flattened cold between parallel plates in three steps, with the weld located either 0° or 90° from the line of direction of force as required in 9.3.1 or 9.3.2, whichever is applicable. During the first step, which is a test for ductility of the weld, no cracks or breaks on the inside or outside surfaces at the weld shall occur until the distance between the plates is less than two thirds of the specified diameter of the pipe. As a second step, the flattening shall be continued as a test for ductility away from the weld. During the second step, no cracks or breaks on the inside or outside surfaces away from the weld, except as provided for in 9.7, shall occur until the distance between the plates is less than one third of the specified outside diameter of the pipe but is not less than five times the wall thickness of the pipe. During the third step, which is a test for soundness, the flattening shall be TABLE 2 Tensile Requirements Type F Types E and S Open-Hearth, Basic Oxygen, or Electric- Furnace, Grade A Grade A Grade B Tensile strength, min, psi [MPa] 48 000 [330] 48 000 [330] 60 000 [415] Yield strength, min, psi, [MPa] 30 000 [205] 30 000 [205] 35 000 [240] Elongation in 2 in. [50 mm] A,B A,B A,B A The minimum elongation in 2 in. [50 mm] shall be that determined by the following equation: e 5 625 000 @1940# A0.2 /U 0.9 where: e = minimum elongation in 2 in. [50 mm] in percent rounded to the nearest percent, A = cross-sectional area of the tension specimen, rounded to the nearest 0.01 in.2 [1 mm2 ], based on the specified outside diameter or the nominal specimen width and specified wall thickness. If the area calculated is equal to or greater than 0.75 in.2 [500 mm2 ], then the value 0.75 in.2 [500 mm 2 ] shall be used, and U = specified tensile strength, psi [MPa]. B See Table X4.1 or Table X4.2, whichever is applicable, for minimum elongation values for various size tension specimens and grades. A 53/A 53M – 02 3
  • 4. continued until the test specimen breaks or the opposite walls of the pipe meet. Evidence of laminated or unsound material or of incomplete weld that is revealed by the flattening test shall be cause for rejection. 9.3.1 For pipe produced in single lengths, the flattening test specified in 9.3 shall be made using a test specimen taken from each end of each length of pipe. The tests from each end shall be made alternately with the weld at 0° and at 90° from the line of direction of force. 9.3.2 For pipe produced in multiple lengths, the flattening test specified in 9.3 shall be made as follows: 9.3.2.1 Test specimens taken from, and representative of, the front end of the first pipe intended to be supplied from each coil, the back end of the last pipe intended to be supplied from each coil, and each side of any intermediate weld stop location shall be flattened with the weld located at 90° from the line of direction of force. 9.3.2.2 Test specimens taken from pipe at any two locations intermediate to the front end of the first pipe and the back end of the last pipe intended to be supplied from each coil shall be flattened with the weld located at 0° from the line of direction of force. 9.3.3 For pipe that is to be subsequently reheated through- out its cross section and hot formed by a reducing process, the manufacturer shall have the option of obtaining the flattening test specimens required by 9.3.1 or 9.3.2, whichever is appli- cable, either prior to or after such hot reducing. 9.4 Continuous-Welded Pipe—A test specimen at least 4 in. [100 mm] in length shall be flattened cold between parallel plates in three steps. The weld shall be located at 90° from the line of direction of force. During the first step, which is a test for ductility of the weld, no cracks or breaks on the inside, outside, or end surfaces at the weld shall occur until the distance between the plates is less than three fourths of the specified diameter of the pipe. As a second step, the flattening shall be continued as a test for ductility away from the weld. During the second step, no cracks or breaks on the inside, outside, or end surfaces away from the weld, except as provided for in 9.7, shall occur until the distance between the plates is less than 60 % of the specified outside diameter of the pipe. During the third step, which is a test for soundness, the flattening shall be continued until the test specimen breaks or the opposite walls of the pipe meet. Evidence of laminated or unsound material or of incomplete weld that is revealed by the flattening test shall be cause for rejection. 9.5 Surface imperfections in the test specimen before flat- tening, but revealed during the first step of the flattening test, shall be judged in accordance with the finish requirements in Section 14. 9.6 Superficial ruptures as a result of surface imperfections shall not be cause for rejection. 9.7 When low D-to-t ratio tubulars are tested, because the strain imposed due to geometry is unreasonably high on the inside surface at the 6 and 12 o’clock locations, cracks at these locations shall not be cause for rejection if the D-to-t ratio is less than 10. 10. Hydrostatic Test 10.1 The hydrostatic test shall be applied, without leakage through the pipe wall, to each length of pipe except as provided in 11.2 for seamless pipe. 10.2 Each length of plain-end pipe shall be hydrostatically tested to the pressures prescribed in Table X2.2, and each threaded-and-coupled length shall be hydrostatically tested to the pressures prescribed in Table X2.3. It shall be permissible, at the discretion of the manufacturer, to perform the hydrostatic test on pipe with plain ends, with threads only, or with threads and couplings and also shall be permissible to test pipe in either single lengths or multiple lengths. NOTE 5—The hydrostatic test pressures given herein are inspection test pressures, are not intended as a basis for design, and do not have any direct relationship to working pressures. 10.3 The minimum hydrostatic test pressure required to satisfy these requirements need not exceed 2500 psi [17 200 kPa] for NPS 3 [DN 80] and under, nor 2800 psi [19 300 kPa] for all sized over NPS 3 [DN 80]. This does not prohibit testing at a higher pressure at the manufacturer’s option. The hydro- static pressure shall be maintained for not less than 5 s for all sizes of seamless and electric-welded pipe. 11. Nondestructive Electric Test 11.1 Type E Pipe: 11.1.1 The weld seam of each length of ERW pipe NPS 2 [DN 50] and larger shall be tested with a nondestructive electric test as follows: 11.1.2 Ultrasonic and Electromagnetic Inspection—Any equipment utilizing the ultrasonic or electromagnetic principles and capable of continuous and uninterrupted inspection of the weld seam shall be used. The equipment shall be checked with an applicable reference standard as described in 11.1.3 at least once every working turn or not more than 8 h to demonstrate its effectiveness and the inspection procedures. The equipment shall be adjusted to produce well-defined indications when the reference standard is scanned by the inspection unit in a manner simulating the i
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