Standard Specification for Steel Line Pipe, Black, Plain End, Laser Beam Welded

ABSTRACT
This specification covers the standard requirements for laser beam welded, black plain end steel pipe for use in the conveyance of fluids under pressure. Dimensions and weight [mass] per unit length of pipes with designated NPS sizes and specified nominal wall thickness shall be given. Heat and product analysis shall be performed wherein steel shall conform to the required chemical composition for carbon, sulfur, and phosphorus. The steel shall conform to the required tensile properties such as minimum and maximum yield strength. The following tests shall be conducted, namely: Charpy V-notch test; weld ductility test; and hydrostatic test.
SCOPE
1.1 This specification covers laser beam welded, black, plain end steel pipe for use in the conveyance of fluids under pressure. Pipe in sizes NPS 1 to 26, inclusive, with nominal wall thickness 0.750 in. [19.1 mm] or less, as given in , is included. Pipe having other dimensions, in this size range, may be furnished provided such pipe complies with all other requirements of this specification.
1.2 It is intended that the pipe be capable of being circumferentially welded in the field when welding procedures in accordance with the requirements of the applicable pipeline construction code are used.
1.3 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, without combining values in any way.
1.4 The following precautionary statement pertains to the test method portion, Section 14, of this specification.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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ASTM A1006/A1006M-00(2004) - Standard Specification for Steel Line Pipe, Black, Plain End, Laser Beam Welded
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A1006/A1006M – 00 (Reapproved 2004)
Standard Specification for
Steel Line Pipe, Black, Plain End, Laser Beam Welded
This standard is issued under the fixed designation A1006/A1006M; 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.
TABLE 1 Dimensions and Weight [Mass] Per Unit Length
1. Scope
1.1 This specification covers laser beam welded, black, NOTE—Pipe having an outside diameter and/or wall thickness interme-
diate to those listed in this table are also permitted.
plain end steel pipe for use in the conveyance of fluids under
pressure. Pipe in sizes NPS 1 to 26, inclusive, with nominal NPS Outside Diameter Wall Thickness Weight [Mass] per Unit
Length
wall thickness 0.750 in. [19.1 mm] or less, as given inTable 1,
Designator in. mm in. mm lb/ft kg/m
is included. Pipe having other dimensions, in this size range,
1 1.315 33.4 0.133 3.4 1.68 2.52
may be furnished provided such pipe complies with all other
0.358 9.1 3.66 4.55
requirements of this specification. 1
1 ⁄4 1.660 42.2 0.140 3.6 2.27 3.43
0.382 9.7 5.22 7.77
1.2 It is intended that the pipe be capable of being circum-
1 ⁄2 1.900 48.3 0.145 3.7 2.72 4.07
ferentially welded in the field when welding procedures in
0.400 10.2 6.41 9.58
accordance with the requirements of the applicable pipeline
2 2.375 60.3 0.083 2.1 2.03 3.01
0.436 11.1 9.04 13.47
construction code are used.
2 ⁄2 2.875 73.0 0.083 2.1 2.48 3.67
1.3 The values stated in either inch-pound units or in SI
0.552 14.0 13.71 20.37
units are to be regarded separately as standard.Within the text,
3 3.500 88.9 0.083 2.1 3.03 4.50
0.600 15.2 18.60 27.63
the SI units are shown in brackets. The values in each system
3 ⁄2 4.000 101.6 0.083 2.1 3.48 5.15
are not exact equivalents: therefore, each system is to be used
0.318 8.1 12.52 18.68
independently of the other, without combining values in any 4 4.500 114.3 0.083 2.1 3.92 5.81
0.674 17.1 27.57 40.99
way.
5 5.563 141.3 0.083 2.1 4.86 7.21
1.4 The following precautionary statement pertains to the
0.750 19.1 38.59 57.56
test method portion, Section 14, of this specification. This
6 6.625 168.3 0.083 2.1 5.80 8.61
0.750 19.1 47.10 70.27
standard does not purport to address all of the safety concerns,
8 8.625 219.1 0.125 3.2 11.36 17.04
if any, associated with its use. It is the responsibility of the user
0.750 19.1 63.14 94.20
of this standard to establish appropriate safety and health 10 10.750 273.1 0.156 4.0 17.67 26.54
0.750 19.1 80.18 119.64
practices and determine the applicability of regulatory limita-
12 12.750 323.9 0.172 4.4 23.13 34.67
tions prior to use.
0.750 19.1 96.21 143.56
14 14.000 355.6 0.188 4.8 27.76 41.52
2. Referenced Documents
0.750 19.1 106.23 158.49
16 16.000 406.7 0.188 4.8 31.78 47.54
2.1 ASTM Standards:
0.750 19.1 122.27 182.42
A370 Test Methods and Definitions for Mechanical Testing 18 18.000 457 0.188 4.8 35.80 53.53
0.750 19.1 138.30 206.25
of Steel Products
20 20.000 508 0.219 5.6 46.31 69.38
A450/A450M Specification for General Requirements for
0.750 19.1 154.34 230.27
Carbon and Low Alloy Steel Tubes
22 22.000 559 0.219 5.6 50.99 76.42
0.750 19.1 170.37 254.30
A530/A530M Specification for General Requirements for
24 24.000 610 0.250 6.4 63.47 95.26
Specialized Carbon and Alloy Steel Pipe
0.750 19.1 186.41 278.32
26 26.000 660 0.250 6.4 68.82 103.15
0.750 19.1 202.44 301.87
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
Current edition approved Sept. 1, 2004. Published October 2004. Originally
A751 TestMethods,Practices,andTerminologyforChemi-
approved in 2000. Last previous edition approved in 2000 asA1006/A1006M–00.
DOI: 10.1520/A1006_A1006M-00R04.
cal Analysis of Steel Products
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A941 Terminology Relating to Steel, Stainless Steel, Re-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
lated Alloys, and Ferroalloys
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A1006/A1006M – 00 (2004)
2.2 API Publication: procedure as specified in ASME Boiler and Pressure Vessel
API RP 5L3 Recommended Practice for Conducting Drop- Code, Section IX, Paragraph QW-264. The edges may be
Weight Tear Tests on Line Pipe preheated.
2.3 ASME Standard: 6.2 Theinternalandexternalweldprotrusionresultingfrom
ASME Boiler and Pressure Vessel Code, Section IX, Weld- the welding process shall be removed, in accordance with the
ing and Brazing Qualifications requirements of 18.1 and 18.2.
6.3 The weld seam and its heat affected zone shall receive
3. Terminology
eitheranormalizingheattreatmentoracontinuousin-lineheat
treatment in such a manner that no untempered martensite
3.1 Definitions of Terms Specific to This Standard:
3.1.1 laser beam welding, n—aweldingprocessthatutilizes remains. Complete penetration and coverage of the weld and
the weld heat affected zone by this heat treatment shall be
alaserbeamtoproducemeltingoffullthicknessofedgestobe
welded, followed by the fusion of those edges. confirmed by periodic metallographic examination of weld
area cross-section specimens at least once per working shift.
3.1.2 specified outside diameter, n—the outside diameter
shown in the purchase order or in Table 1 for the applicable
7. Chemical Composition
NPS size.
7.1 The steel shall contain no more than 0.22% carbon,
3.2 Definitions—For definitions of other terms used in this
0.015% sulfur, and 0.025% phosphorus, by heat and product
specification, refer to Terminology A941.
analyses.
7.2 Thesteelshallcontainnomorethan0.0007%boron,by
TABLE 2 Tensile Requirements
heat analysis.
A A
Grade Yield Strength, Yield Strength, Tensile Strength,
7.3 Thecarbonequivalent(CE)valueforeachheatshallnot
min. max. min.
exceed 0.40%, calculated using the product analyses and the
psi MPa psi MPa psi MPa
following equation:
35 35 000 240 65 000 450 60 000 415
Mn Si Cu Ni Cr 1 Mo 1 V 1 Cb
50 50 000 345 77 000 530 70 000 485
CE 5 C 1 F 1 1 1 1 (1)
F G
60 60 000 415 80 000 550 75 000 515
6 24 15 20 5
70 70 000 485 87 000 600 80 000 550
80 80 000 550 97 000 670 90 000 620
where:
A
Yield strength requirements are not applicable for transverse weld tests.
F = a compliance factor that is dependent upon the carbon
content, as shown below:
Carbon Content, % F Carbon Content, % F
4. Ordering Information
<0.06 0.53 0.14 0.85
0.06 0.54 0.15 0.88
4.1 Information items to be considered, if appropriate, for
0.07 0.56 0.16 0.92
inclusion in the purchase order are as follows:
0.08 0.58 0.17 0.94
4.1.1 Specification designation and year of issue,
0.09 0.62 0.18 0.96
0.10 0.66 0.19 0.97
4.1.2 Quantity (feet or metres),
0.11 0.70 0.20 0.98
4.1.3 Grades (see Table 2 or 8.6),
0.12 0.75 0.21 0.99
4.1.4 Size, either nominal (NPS) or outside diameter and 0.13 0.80 0.22 1.00
wall thickness,
7.4 A heat analysis shall be made for each heat of steel
4.1.5 Nominal length (see 16.3),
furnished under this specification.
4.1.6 End finish (plain end beveled or special, see 17.1),
7.5 Product analyses shall be made on at least two samples
4.1.7 Bar coding (see 20.3),
from each heat of steel.
4.1.8 Special requirements, and
7.6 All analyses shall be in accordance with Test Methods,
4.1.9 Supplementary requirements.
Practices, and Terminology A751, and shall include all ele-
ments required in the carbon equivalent equation of 7.3,in
5. General Requirements
additiontotitanium,phosphorus,sulfur,andboron,exceptthat
5.1 Pipe furnished under this specification shall conform to
the product analysis for boron is not required. Titanium is
the applicable requirements of Specification A530/A530M
reported for information only and is not a cause for rejection.
unless otherwise provided herein.
7.7 Ifoneorbothoftheproductanalysesrepresentingaheat
failstoconformtothespecifiedrequirements,theheatshallbe
6. Materials and Manufacture
rejected, or two additional analyses shall be made on the
6.1 Pipe shall be welded from one side by the laser beam
samplethatfailed,eachofwhichshallconformtothespecified
welding process using a single pass with an appropriate
requirements.
shielding gas. The pipe shall have one longitudinal seam. The
weld shall be made in accordance with a qualified welding 8. Tensile Property Requirements
8.1 The material shall conform to the requirements for
tensilepropertiesgiveninTable2andin8.6.Theyieldstrength
Available from American Petroleum Institute (API), 1220 L Street, N.W.,
maxima apply only to pipe NPS 8 and larger.
Washington, DC 20005-4070.
8.2 The yield strength corresponding to a total extension
Available from ASME International, Three Park Avenue, New York, NY
10016-5990. under load of 0.5% of the gage length shall be determined.
A1006/A1006M – 00 (2004)
8.3 A test specimen taken across the weld shall show a 9.2 The Charpy test specimens used shall be those given in
2 1
tensile strength not less than the minimum tensile strength Table 3, except that it shall be permissible to use ⁄3 or ⁄2 size
specified for the grade of pipe required. Test specimens shall test specimens as required when the absorbed energy is
exhibit at least 10% elongation in 2 in. [50 mm]. This test is expectedtoexceed80%ofthefullscalecapacityofthetesting
not required for pipe under NPS 8. machine.
8.4 Transverse tension tests shall be performed on NPS 8
9.3 Theminimumaverageabsorbedenergyofpipebodyfor
and larger and the specimens shall be taken opposite the weld.
any Charpy V-notch test shall be calculated from the equation
All transverse test specimens shall be approximately 1 ⁄2 in. givenbelowforpipeNPS5throughNPS26.Valuescalculated
[38 mm] wide in the gage length and shall represent the full
by this equation as less than 30 ft-lbf [40 J] shall be taken as
wall thickness of the pipe from which the specimen was cut. 30 ft-lbf [40 J] minimum average.
8.5 For pipe smaller than NPS 8, longitudinal tests shall be
1.5
CV ~fullsize!5 C 3 D 3 S (3)
=
performed. Such tests shall be either strip specimens taken
approximately 90° from the weld or full section specimens, at
where:
the option of the manufacturer. CV = minimum average value required, ft-lbf [J],
8.6 Grades intermediate to those shown in Table 2 may be C = 0.024 [0.000 354],
furnished.Forsuchgrades,thepermissibleyieldstrengthrange D = specified outside diameter, in. [mm], and
S = 0.72 3 specified minimum yield strength, ksi [MPa].
shall be as given in Table 2 for the next higher grade, and the
required minimum tensile strength shall exceed the required
NOTE 1—Charpy testing is not required on any pipe smaller than NPS
minimum yield strength by the same amount as is given in
5 or for pipe NPS 5 or larger with insufficient specified wall thickness to
Table 2 for the next higher grade. 1
permit at least ⁄2 size specimens to be obtained.
8.7 Theminimumelongationin2in.[50mm]forallgrades
9.4 When subsize specimens are used, the minimum aver-
shall be determined by the following equation:
age absorbed energy shall be that specified for full size
0.2
A
specimens multiplied by 0.67 (for ⁄3 size specimens) or 0.50
e 5 C (2)
0.9
U
(for ⁄2 size specimens), rounded to the nearest whole number.
9.5 Testing shall be conducted at a test temperature of 32°F
where:
[0°C], or lower.
e = minimum elongation in 2 in. [50 mm], percent,
9.6 For pipe body tests, each Charpy specimen shall exhibit
rounded to the nearest percent,
at least 75% shear area.
C = 625 000 [1940],
2 2
A = the lesser of 0.75 in [485 mm ] and the cross-
10. Weld Ductility Test
sectional area of the tensile test specimen, based on
the specified outside diameter or the nominal speci-
10.1 Flattening Test—The flattening test shall be conducted
men width and the specified wall thickness, rounded
by tests on full section specimens of 2 in. [50 mm] minimum
2 2
to the nearest 0.01 in [1 mm ], and
length. The specimens shall be flattened cold between parallel
U = specified minimum tensile strength, psi [MPa].
plates. The weld shall be placed at 90° and at 0° from the
directionofappliedforce.Nocrackorbreaksexceeding ⁄8 in.
9. Charpy V-Notch Test
[3mm]inanydirectionintheweldorintheparentmetalshall
9.1 Pipe body test specimens shall be taken approximately occur on the outside surface until the distance between the
90° from the weld. plates is less than the value of H in the following equation,
TABLE 3 Relationship Between Pipe Dimensions and Required Charpy Specimens
NOTE—Charpy testing is not required on any pipe smaller than NPS 5 or for pipe NPS 5 or larger with insufficient specified wall thickness to permit
at least ⁄2 size specimens to be obtained.
Specified Wall Thickness, in. [mm]
Specified OD
2 1 2 1
Full Size ⁄3 Size ⁄2 Size ⁄3 Size ⁄2 Size
in. [mm]
Transverse Transverse Transverse Longitudinal Longitudinal
5 ⁄16 0.469 and thicker 0.371 to 0.468 0.338 to 0.370 0.310 to 0.337 0.245 to 0.309
[141.3] [11.9 and thicker] [9.4 to 11.8] [8.8 to 9.3] [7.9 to 9.2] [6.2 to 7.8]
6 ⁄8 0.460 and thicker 0.334 to 0.459 0.301 to 0.333 0.244 to 0.300
...
[168.3] [11.7 and thicker] [8.5 to 11.6] [7.6 to 8.4] [6.2 to 7.5]
8 ⁄8 0.450 and thicker 0.318 to 0.449 0.267 to 0.317 0.242 to 0.256
...
[219.1] [11.4 and thicker] [8.1 to 11.3] [6.5 to 8.0] [6.1 to 6.4]
10 ⁄4 0.443 and thicker 0.311 to 0.442 0.246 to 0.310 0.241 to 0.245
...
[273.1] [11.3 and thicker] [7.9 to 11.2] [6.2 to 7.8] [6.1]
12 ⁄4 0.438 and thicker 0.307 to 0.437 0.241 to 0.306
... ...
[323.9] [11.1 and thicker] [7.8 to 11.0] [6.1 to 7.7]
14 0.436 and thicker 0.305 to 0.435 0.238 to 0.304
... ...
[355.6] [11.1 and thicker] [7.7 to 11.0] [6.1 to 7.6]
$16 0.434 and thicker 0.304 to 0.433 0.237 to 0.303
... ...
[$406.4] [11.0 and thicker] [7.7 to 10.9] [6.0 to 7.6]
A1006/A1006M – 00 (2004)
except that cracks that occur at the edges of the specimen and smaller than NPS 2, the test pressures given for the next
are less than ⁄4 in. [6 mm] long shall not be cause for smaller diameter shall be used.
rejection: 11.4 When computed test pressures are not an exact mul-
tiple of 10 psi [100 kPa], they shall be rounded to the nearest
3.05 t
H 5 (4)
10 psi [100 kPa].
~0.05 13 t/D!
11.5 The minimum hydrostatic test pressure required to
where:
satisfy these requirements need not exceed 3000 psi
...

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