Bend test No cracks shall occur in any portion of the test piece and no opening of the weld shall occur. For other sizes refer to the full API 5L specification.
The pipe end includes a length of 4 in ate each of the pipe extremities b. For determining compliance to diameter tolerance, the pipe diameter is defined as the circumference of the pipe in any circumferential plane divide by Pi. If the purchase order specifies a minus tolerance for wall thickness smaller than the applicable value given in this table, the plus tolerance for wall thickness shall be increased by an amount sufficient to maintain the applicable tolerance range.
The plus tolerance for wall thickens does not apply to the weld area d. We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it. As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation:.
Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters square inches , as follows. U is the specified minimum tensile strength, expressed in megapascals pounds per square inch.
As agreed. The pipe end includes a length of 4 in ate each of the pipe extremities. Reference documents to API 5L. Steel Grade f. Individual annexes applicability of confirmation. Following additional information also could be included in the PO in different situations. For PSL1 pipe, manufacturer shall establish and follow documented procedures to maintain a.
The heat identity until all related chemical tests are performed and complied the required specifications. Test unit identity until all related mechanical tests are performed and complied with the related specifications. For PSL2 pipe, Besides above terms, such documents shall provide means for tracing any length of the pipe to the proper test unit, including the related chemical and mechanical test results.
Minimum YS Mpa psi, maximum Mpa psi. The mainly difference between 45th Edition with previously is to add 2 additional appendix: European onshore pipeline for PSL2 pipe order specification, Annex M. For the other content has a little difference in related standards, manufacturing technology, performances norm, inspection methods, besides adjustment of text expression. New version of API 5L is more completely, and scientific.
Modern API 5l steel line pipe belongs to low carbon or ultra-low carbon micro alloy steel. It is high technology and high value-added product. The steel line pipe production has almost applied to all new technology achievement in metallurgy field nearly 20 years.
At present, the development trend of line pipe engineering is large diameter, high pressure gas transportation, high cold and corrosion service environment, thick wall of submarine pipeline etc. Therefore, API 5L steel pipe should have high strength, high toughness and brittle fracture, and good weld ability, and suitable for sour services and in H2S environment with anti-corrosion performances.
Octal is located in China recognized as a leading supplier, distributor, and manufacturer union in providing piping solutions for oil and gas company. Also called JCOE manufacturing process. Requirement PSL1 and PSL2 are not only different for testing requirements, but also for chemical composition and mechanical properties.
Tensile and Yield strength For intermediate grades, the difference between the specified minimum tensile strength and minimum yield strength for the pipe body shall be as given in the table for the next higher grade.
The specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body ung footnote a a. The specified minimum elongation, Af, shall be as determined with following equation: g. Bend test Cracks should not occur in any part of the sample and opening of weld shall not occur as well.
Flattening Test The flattening test method is used to verify the deformation performance of line pipe to the specified size, and display its defects. With a subscription on Compass, you are ensured consistent and up-to-date access to the latest API standards. For additional information please use the e-mail compass api.
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