ASTM A53/A53M-20 pdf free download.Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.
1 This specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS ¼ to NPS 26 IDN 6 to DN 6501 (Note I), 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 provided that such pipc complies with all other requirements of this specification. Supplementary requirements of an optional nature are provided and shall apply only when specified by the purchaser.
Nom 1—The dimensionless designators NPS (nominal pipe sizc) IDN (diameter norninal)l have been substituted in this specitication br such traditional terms as “nominal diameter.”“size.” and “nominal size.”
Noni 2—The tern 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 (he nominal wall thickness.
1.2 This specification covers the following types and grades:
1.2.1 Tpe F—Furnace-butt-welded, continuous welded Grade A,
1.2.2 Tpe E—Electric-resis(ance-welded, Grades A and B. and
1.2.3 Type S—Seamless, Grades A and B.
Nom 3—See Appendix Xl for definitions of types of pipe.
1.3 Pipe ordered under (his 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 qualifications:
1.3.1 Type F is not intended for flanging.
1.3.2 If Type S or Type E is required for close coiling or cold bending. Grade A is (he preferred grade: however, this is not intended to prohibit the cold bending of Grade 13 pipe.
1.3.3 Type E is furnished either nonexpanded or cold expanded at the option of the manufacturer.
1.4 The values slated 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, Secüons 7, 8, 9, 13, 14, and 15 of this specification: This standard does 1101 purport to address all of the safrtv concerns, if an associated with its use. ii is the responsibility of the user of this standard to establish appropriatesafeti health, and en vironniental practices 011(1 deter— ,nine the applicability of regulatory requirelnenis prior to use.
I .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.
1 .7 This internaiwnal standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of I,iternational Standards, Guides and Recoinmnendations issued by the World Trade 0, anization Technical Barriers to Trade (TBT C’omn,nirtee.
2. Referenced Documents
2.1 ASTM Standcrnls:
A90/A9OM Test Method for Weight [Massi of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
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 (A53 or A53M, including year-date),
3.1.2 Quantity (feet, metres, or number of lengths),
3.1.3 Grade (A or B),
3.1.4 Type (F, E, or S; see 1.2),
3.1.5 Finish (black or galvanized).
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 If Steels of different grades are sequentially strand cast. identification of the resUltant transition material is required. The steel producer shall remove the transition material by any established procedure that positively separates (he grades.
4.3 The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding to a minimum of lOO() °F 1540 °C1 so that no untempered martensite remains, or otherwise processed in such a manner that flO untempered martensite remains.
4.4 When pipe is cold expanded, the amount of expansion shall not exceed 1 ½ % of the specified outside diameter of the pipe.
5. Chemical Composition
5.1 The steel shall conform to the requirements as to chemical composition given in Table I and the chemical analysis shall be in accordance with Test Methods. Practices. and Terminology A75 I.
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 Ibr chemical analysis. except tir spectrographic analysis. shall be taken in accordance with Practice E1806. The chemical composition thus determined shall conform to the requirements given in Table I.ASTM A53/A53M pdf free download.