ASME SA-106:2019 pdf free download – SPECIFICATION FOR SEAMLESS CARBON STEEL PIPE FOR HIGH-TEMPERATURE SERVICE
1.1 This specification covers seamless carbon steel pipe for high-temperature service (Note 1) in NPS 1 ⁄ 8 to NPS 48 [DN 6 to DN 1200] (Note 2) inclusive, with nominal (aver- age) wall thickness as given in ASME B36.10M. It shall be permissible to furnish pipe having other dimensions provided such pipe complies with all other requirements of this specification. Pipe ordered under this specification shall be suitable for bending, flanging, and similar forming operations, and forwelding. When the steel is to be welded, it is presupposed that a welding procedure suitable to the grade of steel and intended use or service will be utilized. NOTE 1 — It is suggested, consideration be given to possible graphit- ization. NOTE 2 — The dimensionless designator NPS (nominal pipe size) [DN (diameter nominal)] has been substituted in this standard for such tradi- tional terms as “nominal diameter,” “size,” and “nominal size.”
1.2 Supplementary requirements of an optional nature are provided for seamless pipe intended for use in applica- tions where a superior grade of pipe is required. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order.
1.3 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; there- fore, each system shall be used independently of the other. Combining values from the two systems may result in non- conformance with the standard.
1.4 The following precautionary caveat pertains only to the test method portion, Sections 11, 12, and 13 of this specification: This standard does not purport to address all ofthe safety concerns, ifany, associated with its use. It is the responsibility ofthe userofthis standard to establish appropriate safety and health practices and determine the applicability ofregulatory limitations prior to use.
4.1 The steel shall be killed steel, with the primary melting process being open-hearth, basic-oxygen, or elec- tric-furnace, possibly combined with separate degassing or refining. If secondary melting, using electroslag remelting or vacuum-arc remelting is subsequently employed, the heat shall be defined as all of the ingots remelted from a single primary heat.
4.2 Steel cast in ingots or strand cast is permissible. When steels ofdifferentgrades are sequentially strand cast, identification ofthe resultanttransition material is required. The producer shall remove the transition material by any established procedure that positively separates the grades.
4.3 For pipe NPS 1 1 ⁄ 2 [DN 40] and under, it shall be permissible to furnish hot finished or cold drawn.
4.4 Unless otherwise specified, pipe NPS 2 [DN 50] and over shall be furnished hot finished. When agreed upon between the manufacturer and the purchaser, it is permissible to furnish cold-drawn pipe.
8.1 An analysis of each heat of steel shall be made by the steel manufacturer to determine the percentages of the elements specified in Section 7. If the secondary melting processes of 5.1 are employed, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot ofeach primary melt. The chemical compo- sition thus determined, or that determined from a product analysis made by the manufacturer, if the latter has not manufactured the steel, shall be reported to the purchaser or the purchaser’s representative, and shall conform to the requirements specified in Section 7.