ASTM - A 106/A 106M – 04 - Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service1

ASTM - A 106/A 106M – 04 - Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service1

        

1. Scope*

1.1 This specification2 covers seamless carbon steel pipe forhigh-temperature service (Note 1) in NPS 1⁄8 to NPS 48inclusive, with nominal (average) wall thickness as given in ANSI B 36.10. 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 for welding. 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 2).

NOTE 1—It is suggested, consideration be given to possible graphitization.

NOTE 2—The purpose for which the pipe is to be used should be stated in the order. GradeArather than Grade B or Grade C is the preferred grade for close coiling or cold bending. This note is not intended to prohibit the cold bending of Grade B seamless pipe.

1.2 Supplementary requirements (S1 to S7) of an optional nature are provided for seamless pipe intended for use in applications 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 inch-pound units are to be regarded as the standard.

4. Process

4.1 The steel shall be killed steel, with the primary melting process being open-hearth, basic-oxygen, or electric-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 of different grades are sequentially strand cast, identification of the resultant transition material is required. The producer shall remove the transition material by any established procedure that positively separates the grades.

4.3 For pipe NPS 11⁄2 and under, it shall be permissible to

furnish hot finished or cold drawn.

9. Product Analysis

9.1 At the request of the purchaser, analyses of two pipes from each lot (Note 4) of 400 lengths or fraction thereof, of each size up to, but not including, NPS 6, and from each lot of 200 lengths or fraction thereof of each size NPS 6 and over, shall be made by the manufacturer from the finished pipe. The results of these analyses shall be reported to the purchaser or the purchaser’s representative and shall conform to the requirements specified in Section 7.

9.2 If the analysis of one of the tests specified in 9.1 does not conform to the requirements specified in Section 7, analyses shall be made on additional pipes of double the original number from the same lot, each of which shall conform to requirements specified.

26. Keywords

26.1 carbon steel pipe; seamless steel pipe; steel pipe

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ASTM - A 106/A 106M – 04 - Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service1

ASTM - A0106/A 106M – 04 - Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service1

ASTM - A 0106/A 106M – 04 - Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service1

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