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Description of ASTM-A381 2012ASTM A381 - 96(2012)Standard Specification for Metal-Arc-Welded Steel Pipe for Use With High-Pressure Transmission SystemsActive Standard ASTM A381 | Developed by Subcommittee: A01.09 Book of Standards Volume: 01.01 ASTM A381Abstract This specification covers metal-arc-welded steel pipe for use with high pressure transmission systems. The pipe is intended for fabrication of fittings and accessories for compressor or pump-station piping. The required chemical compositions for carbon steel, and the tensile properties of finished pipes are presented. Mechanical testing requirements namely transverse body tension test and transverse weld tension test shall be performed on each length of pipe from each lot of 100 lengths, and transverse guided-bend weld test cut from a length of pipe from each lot of 50 length, also hydrostatic test from each length of pipes shall be performed. A radiographic examination shall also be performed to ensure that the welding equipment is consistently producing the required quality. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 1. Scope 1.1 This specification covers straight seam, double-submerged-arc-welded steel pipe ( Note 1 ) suitable for high-pressure service, 16 in. (406 mm) and larger in outside diameter, with wall thicknesses from 5 / 16 to 1 1 / 2 in. (7.9 to 38 mm). The pipe is intended for fabrication of fittings and accessories for compressor or pump-station piping. Pipe ordered to this specification shall be suitable for bending, flanging (vastoning), corrugating, and similar operations.
Note 1 A comprehensive listing of standardized pipe dimensions is contained in ANSI B36.10 .
Note 2 The term double welded is commonly used in the gas and oil transmission industry, for which this pipe is
primarily intended, to indicate welding with at least two weld passes, of which one is on the outside of the pipe and one on the inside. For some sizes of the pipe covered by this
specification, it becomes expedient to use manual welding, in which case the provisions of Note 3 shall be followed.
1.2 Nine classes of pipe, based on minimum yield point requirements, are covered as indicated in Table 1 .
TABLE 1 Tensile Requirements
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 The following caveat applies to the test methods portion, Sections 9 and 10 , only. 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards A370 Test Methods and Definitions for Mechanical Testing of Steel Products A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe E30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron ASME Boiler and Pressure Vessel Code SectionIXWeldingQualKeywords arc welded steel pipe; steel pipe; ICS Code ICS Number Code 23.040.10 (Iron and steel pipes) DOI: 10.1520/A0381-96R12 ASTM International is a member of CrossRef. ASTM A381This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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