GB-T706-2008-热轧型钢.pdf

Designation: A790/A 790M-03
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
Pipe
This standard is issued under the fixed desi nation 790 790M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A numbcr in parcnthcscs indicates the year of last reapprova
A superscript epsilon (e) indicates an editorial change since the last revision or reapprova
1. Scope*
lated Alloys and Feroalloy
1. I This specification covers seamless and straight-seam A 999/A 999M Specification for General Requirements for
welded ferritic/austenitic steel pipe intended for general corro-
Alloy and Stainless Steel Pipe*
sive service, with particular emphasis on resistance to stress
E 213 Practice for Ultrasonic Examination of Metal Pipe
corrosion cracking. These steels are susceptible to embrittle
and Tubing
ment if used for prolonged periods at elevated temperatures
E 309 Practice for Eddy-current Examination of Steel Tu-
2 Optional supplementary requirements are provided for
bular Products Using Magnetic Saturation
pipe when a greater degree of testing is desired. These
E 381 Method of Macroetch Testing Steel Bars. Billets
supplementary requirements call for additional tests to be made
Blooms, and Forgings
and, when desired, one or more of these may be specified in the
E 426 Practice for Electromagnetic(Eddy-current)Exami
order
nation of Seamless and Welded Tubular Products. Austen
1. 3 Appendix XI of this specification lists the dimensions
itic Stainless Steel and Similar Alloys?
of welded and seamless stainless steel pipe as shown in ANS
E 527 Practice for Numbering Metals and Alloys(UNS
B36. 19. Pipe having other dimensions may be furnished
22 ANS/ Standards
provided such pipe complies with all other requirements of this
B1. 20. I Pipe Threads, General Purpose
specification
B36 10 Welded and Seamless Wrought Steel Pipe
4 The values stated in either inch-pound units or SI units
2.3 SA1 Sandard el Pipe
B36. 19 Stainless Ste
are to be regarded separately as standard. Within the text, the
I units are shown in brackets. The values stated in each
SAE J 1086
system are not exact equivalents; therefore, each system must
24 Other Standara.9
be used independently of the other. Combining values from the
SNT-TC-1A Personal Qualification and Certification in
two systems may result in nonconformance with the specifi
Nondestructive Testing
cation. The inch-pound units shall apply unless the M desig
nation of this specification is specified in the order
Terminology
3. 1 Definifions-for definitions of terms used in this speci
NOTE I-the dimensionless designator NPS(nominal pipe size) has fication refer to Terminology A 941
been substituted in this standard for such traditional terms as nominal
diameter size and nomimal size
4. Ordering Information
2. Referenced Documents
4. 1 Orders for material under this specification shoul
2. 1 ASTM Standards
include the following, as required, to describe the desired
A 370 Test Methods and Definitions for Mechanical Testing
material adequately
of Steel Products'
4.1.1 Quantity(feet, metres, or n