ASTM A139/A139M-04(2010)
(Specification)Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
ABSTRACT
This specification covers five grades of electric-fusion(arc)-welded straight-seam or helical steel pipe including pipe of NPS 4 and over. The required chemical composition, tensile requirements of the steel, and the tensile requirements of the production welds are presented. Heat analysis of each heat of steel was made to determine the percentage of the elements as per chemical requirements. Tests to be performed shall include one longitudinal tension test for the steel, one reduced-section production weld test for the pipe, and hydrostatic test for each length of the pipe.
SCOPE
1.1 This specification covers five grades of electric-fusion (arc)-welded straight-seam or helical-seam steel pipe. Pipe of NPS 4 (Note 1) and larger with nominal (average) wall thickness of 1.0 in. [25.4 mm] and less are covered. Listing of standardized dimensions are for reference (Note 2). The grades of steel are pipe mill grades having mechanical properties which differ from standard plate grades. The pipe is intended for conveying liquid, gas, or vapor.
Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,”“ size,” and “nominal size.”
Note 2—A comprehensive listing of standardized pipe dimensions is contained in ASME B36.10M.
Note 3—The suitability of pipe for various purposes is somewhat dependent on its dimensions, properties, and conditions of service. For example, for high-temperature service see applicable codes and Specification A691.
1.2 The values stated in either inch-pound units or in SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values in each system are not exact equivalents; therefore, each system is to be used independently of the other.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A139/A139M −04(Reapproved 2010)
Standard Specification for
Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
This standard is issued under the fixed designationA139/A139M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope of Chemical Composition (Withdrawn 1996)
2.2 American Welding Society Standard:
1.1 This specification covers five grades of electric-fusion
AWS B2.1 Standard for Welding Procedure and Perfor-
(arc)-welded straight-seam or helical-seam steel pipe. Pipe of
mance Qualifications Welding Handbook, Vol 1, 8th ed
NPS4(Note 1) and larger with nominal (average) wall
2.3 ASME Standards:
thickness of 1.0 in. [25.4 mm] and less are covered. Listing of
ASME B36.10M Welded and Seamless Wrought Steel Pipe
standardized dimensions are for reference (Note 2).The grades
ASME B36.19M Stainless Steel Pipe
of steel are pipe mill grades having mechanical properties
ASMEBoilerandPressureVesselCode,SectionIX Welding
which differ from standard plate grades. The pipe is intended
Qualifications
for conveying liquid, gas, or vapor.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
3. Ordering Information
been substituted in this standard for such traditional terms as “nominal
3.1 Orders for material under this specification should
diameter,”“ size,” and “nominal size.”
include the following, as required, to describe the desired
NOTE 2—A comprehensive listing of standardized pipe dimensions is
contained in ASME B36.10M.
material adequately:
NOTE 3—The suitability of pipe for various purposes is somewhat
3.1.1 Quantity (feet, metres, or number of lengths),
dependent on its dimensions, properties, and conditions of service. For
3.1.2 Name of material (electric-fusion-(arc) welded steel
example, for high-temperature service see applicable codes and Specifi-
pipe),
cation A691.
3.1.3 Grade (Table 1),
1.2 The values stated in either inch-pound units or in SI
3.1.4 Size (NPS, or outside diameter, and nominal wall
units are to be regarded separately as standard. Within the text,
thickness, or schedule number),
the SI units are shown in brackets. The values in each system
3.1.5 Lengths (specific or random, Section 17),
are not exact equivalents; therefore, each system is to be used
3.1.6 End finish (Section 18),
independently of the other.
3.1.7 Hydrostatic test pressure (Section 16, Note 8, and
Note 9),
2. Referenced Documents
3.1.8 ASTM specification designation, and
2.1 ASTM Standards:
3.1.9 End use of material.
A370 Test Methods and Definitions for Mechanical Testing
4. Process
of Steel Products
A691 Specification for Carbon and Alloy Steel Pipe,
4.1 The steel shall be made by one or more of the following
Electric-Fusion-WeldedforHigh-PressureServiceatHigh
processes: open-hearth, basic-oxygen, or electric-furnace.
Temperatures
4.2 Steel may be cast in ingots or may be strand cast. When
A751 Test Methods, Practices, and Terminology for Chemi-
steels of different grades are sequentially strand cast, identifi-
cal Analysis of Steel Products
cation of the resultant transition material is required. The
E59 Practice for Sampling Steel and Iron for Determination
producer shall remove the transition material by any estab-
lished procedure that positively separates the grades.
1 NOTE 4—The term “basic-oxygen steelmaking” is used generically to
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and RelatedAlloys, and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
Current edition approved April 1, 2010. Published August 2010. Originally The last approved version of this historical standard is referenced on
approved in 1932. Last previous edition approved in 2004 as A139/A139M–04. www.astm.org.
DOI: 10.1520/A0139_A0139M-04R10. Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Miami, FL 33126, http://www.aws.org.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A139/A139M−04 (2010)
TABLE 1 Chemical Requirements
5.2 All weld seams made in manufacturing pipe shall be
Element Composition, max, % made using complete joint penetration groove welds.
Grade A Grade B Grade C Grade D Grade E
6. Chemical Composition
Carbon 0.25 0.26 0.28 0.30 0.30
Manganese 1.00 1.00 1.20 1.30 1.40
6.1 The steel shall conform to the chemical requirements
Phosphorus 0.035 0.035 0.035 0.035 0.035
prescribed in Table 1 and the chemical analysis shall be in
Sulfur 0.035 0.035 0.035 0.035 0.035
accordance with Test Methods, Practices, and Terminology
A751.
describe processes in which molten iron is refined to steel under a basic
7. Tensile Requirements for the Steel
slag in a cylindrical furnace lined with basic refractories, by directing a jet
7.1 Longitudinal tension test specimens taken from the steel
of high-purity gaseous oxygen onto the surface of the hot metal bath.
shall conform to the requirements as to tensile properties
5. Manufacture
prescribed in Table 2.At the manufacturer’s option, the tension
test specimen for sizes 8 ⁄8 in. [219.1 mm] in outside diameter
5.1 The longitudinal edges of the steel shall be shaped to
and larger may be taken transversely as described in 19.4.
give the most satisfactory results by the particular welding
process employed. The weld shall be made by automatic (Note
7.2 The yield point shall be determined by the drop of the
5) means (except tack welds if used) and shall be of reasonably
beam, by the halt in the gage of the testing machine, by the use
uniform width and height for the entire length of the pipe.
of dividers, or by other approved methods. The yield strength
correspondingtoapermanentoffsetof0.2 %ofthegagelength
NOTE 5—Upon agreement between the purchaser and the manufacturer,
of the specimen, or to a total extension of 0.5 % of the gage
manual welding by qualified procedure and welders may be used as an
equal alternative under these specifications. length under load shall be determined.
TABLE 2 Tensile Requirements
Grade A Grade B Grade C Grade D Grade E
Tensile strength, min, ksi [MPa] 48 [330] 60 [415] 60 [415] 60 [415] 66 [455]
Yield strength, min, ksi [MPa] 30 [205] 35 [240] 42 [290] 46 [315] 52 [360]
Elongation in 2 in. or 50 mm, min, %:
Basic minimum elongation for walls ⁄16 in. [7.9 mm] and over in 35 30 25 23 22
thickness, longitudinal strip tests
1 A A
For longitudinal strips tests, a deduction for each ⁄32-in. [0.8-mm] 1.75 1.50 1.25 1.50 2.0
decrease in wall thickness below ⁄16 in. [7.9 mm] from the
A
basic minimum elongation of the following percentage
B,C
Elongation in 8 in. or 200 mm, min, % Inch Pound Units, 1500/specified minimum tensile strength (ksi)
SI Units, 10 300/specified minimum tensile strength [MPa]
A
The table below gives the computed minimum values.
B
For wall thicknesses ⁄2 in. [12.7 mm] and greater, the elongation may be taken in 8 in. or 200 mm.
C
The elongation in 8 in. or 200 mm need not exceed 30 %.
Wall Thickness Elongation in 2 in. or 50 mm, min, %
in. mm Grade A Grade B
⁄16 (0.312) 7.9 35.00 30.00
⁄32 (0.281) 7.1 33.25 28.50
⁄4 (0.250) 6.4 31.50 27.00
⁄32 (0.219) 5.6 29.75 25.50
⁄16 (0.188) 4.8 28.00 24.00
⁄32 (0.156) 4.0 26.25 22.50
⁄8 (0.125) 3.7 24.50 21.00
⁄32 (0.094) 2.4 22.75 19.50
⁄16 (0.062) 1.6 21.00 18.00
Note—The above table gives the computed minimum elongation values for each ⁄32-in. [0.8-mm] decrease in wall thickness. Where the wall thickness lies between two
values shown above, the minimum elongation value shall be determined by the following equation:
Grade Equation Equation
Inch-Pound Units SI Units
A E=56t + 17.50 E = 2.20t + 17.50
B E=48t + 15.00 E = 1.89t + 15.00
C E=40t + 12.50 E = 1.57t + 12.50
D E=48t+8 E = 1.89t+8
E E=64t+2 E = 2.52t+2
where:
E = elongation in 2 in. or 50 mm, %, and
t = actual thickness of specimen, in. [mm]
A139/A139M−04 (2010)
8. Tensile Requirements of Production Welds thickness is 0.188 in. [4.78 mm] or less or more than 5.5 %
under if the specified wall thickness is greater than 0.188 in.
8.1 Reduced-section tension test specimens taken perpen-
[4.78 mm].
dicularly across the weld in the pipe, with the weld reinforce-
11.1.3 The mass of a carload lot shall not vary more than
ment removed, shall show a tensile strength not less than 95 %
1.75 % under the specified mass.Acarload lot is considered to
of the minimum specified in Section 7. At the manufacturer’s
be a minimum of 40 000 lb [18 Mg] shipped on a conveyance.
option, the test may be made without removing the weld
reinforcement, in which case the tensile strength shall be not 11.2 Thickness—The minimum wall thickness at any point
less than that specified in Section 7. shallbenotmorethan12.5 %underthenominalwallthickness
specified.
9. Heat Analysis
11.3 Circumference—The pipe shall be substantially round.
The outside circumference of the pipe shall not vary more than
9.1 An analysis of each heat of steel shall be made by the
61.0 %, but not exceeding 6 ⁄4 in. [19.0 mm], from the
manufacturer to determine the percentages of the elements
nominal outside circumference based upon the diameter
specified in Section 6. This analysis shall be made from a test
specified, except that the circumference at ends shall be sized,
ingot taken during the pouring of the heat. When requested by
if necessary, to meet the requirements of Section 18.
the purchaser, the chemical composition thus determined shall
be reported to the purchaser or his representative, and shall
11.4 Straightness—Finished pipe shall be commercially
conform to the requirements specified in Section 6.
straight. When specific straightness requirements are desired,
the order should so state, and the tolerance shall be a matter of
10. Product Analysis
agreement between the purchaser and the manufacturer.
10.1 An analysis may be made by the purchaser on samples
11.5 Ovality (Out-of-Roundness) —The pipe diameter,
of pipe selected at random and shall conform to the require-
within 4.0 in. [100 mm] of ends, shall not vary more than 1 %
ments specified in Section 6. Samples for chemical analysis,
from the specified diameter as measured across any single
except for spectrochemical analysis, shall be taken in accor-
plane with a bar gage, caliper, or other instrument capable of
dance with Method E59. The number of samples shall be
measuring actual diameter.
determined as follows:
NPS Number of Samples Selected
12. Finish
Under 14 2 for each lot of 200 pipes or fraction thereof
14 to 36, incl 2 for each lot of 100 pipes or fraction thereof 12.1 Repair by Welding—The manual, or automatic arc,
Over 36 2 for each 3000 ft or fraction thereof
welding of injurious defects in the pipe wall, provided their
depth does not exceed one third the specified wall thickness,
10.2 Retests—If the analysis of either length of pipe or
length of skelp does not conform to the requirements specified willbepermitted.Defectsinthewelds,suchassweatsorleaks,
shall be repaired or the piece rejected at the option of the
in Section 6, analyses of two additional lengths from the same
manufacturer. Repairs of this nature shall be made by com-
lot shall be made, each of which shall conform to the
pletely removing the defect, cleaning the cavity, and then
requirements specified.
welding.
11. Dimensions, Mass, and Permissible Variations
12.2 All repaired pipe shall be tested hydrostatically in
accordance with Section 16.
11.1 Mass—The specified mass per unit length shall be
calculated using the following equation:
13. Retests
M 5 C D 2 t t (1)
~ !
13.1 If any specimen tested under Sections 8 or 15 fails to
where:
meet the requirements, retests of two additional specimens
C = 10.69 [0.02466],
fromthesamelotofpipeshallbemade,allofwhichshallmeet
M = mass per unit length, lb/ft [kg/m],
the specified requirements. If any of the retests fail to conform
D = outside diameter, in. [mm], specified or calculated
to the requirements, test specimens may be taken from each
(from inside diameter and wall thickness), and
untested pipe length, at the manufacturer’s option, and each
t = specified wall thickness, in. (to 3 decimal places) [mm]
specimen shall meet the requirements specified, or that pipe
(to 2 decimal places)
shall be rejected.
NOTE 6—The mass per unit length given in ASME B36.10M and
ASMEB36.19Mandthecalculatedmassgivenbytheequationof11.1are
14. Number of Production Test Specimens
for carbon steel pipe. The mass per unit length of pipe made of ferritic
stainlesssteelsmaybeabout5 %less,andthatmadeofausteniticstainless
14.1 One longitudinal tension test specimen specified in
steel about 2 % greater than the values given. The specified mass of an
19.2 shall be made from the steel of each heat, or fraction
individual pipe length shall be calculated as its specified mass per unit
length times its length. thereof, used in the manufacture of the pipe.
11.1.1 The mass of any length of pipe shall not vary more
14.2 One reduced-section production weld test specimen
than 10 % over its specified mass.
specified in 19.5 shall be taken from a length of pipe from each
11.1.2 The mass of any length of pipe shall not vary more lot of 3000 ft (914 m) of pipe, or fraction thereof, of each size
than 5 % under the specified mass if the specified wall and wall thickness.
A139/A139M−04 (2010)
14.3 If any test specimen shows defective machining or
developsflawsnotassociatedwiththequalityofthesteelorthe
welding,itmaybediscardedandanotherspecimensubstituted.
14.4 Each length of pipe shall be subjected to the hydro-
static test specified in Section 16.
15. Qualification of Welding Procedure
Metric Equivalents
15.1 Welding procedures shall be qualified in accordance
1 1
in. ⁄16 1 ⁄2 6
with the requirements of AWS B2.1; ASME Boiler and
mm 1.6 38 150
Pressure Vessel Code, Section IX; or other qualification pro-
cedures as noted in the American Welding Society Welding NOTE 1—Weld reinforcement may or may not be removed flush with
the surface of the specimen.
Handbook. Tests and test values shall be as specified in 15.2
NOTE 2—Sho
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.