Electric-Fusion-Welded Steel Pipe ASTM A672 Archives

Electric-Fusion-Welded Steel Pipe ASTM A672

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Designation: A672/A672M-09
Standard Specification for Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures

This standard is issued under the fixed designation A672/A672M; 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 (ɛ) indicates an editorial change since the last revision or reapproval.



Tensile Requirements ASTM A672
ASTM A672	Grade	Type of Class	Nominal Composition	Specified Minimum Tensile, ksi	Specified Minimum Yield, ksi	E of F
ASTM A672	Grade A45	10, 13	C	45	24	0.90
	Grade A45	11, 12	C	45	24	1.00
	Grade A45	20, 23, 30, 33	C	45	24	0.90
	Grade A45	21, 22, 31, 32	C	45	24	1.00
ASTM A672	Grade A50	10, 13	C	50	27	0.90
	Grade A50	11, 12	C	50	27	1.00
	Grade A50	20, 23, 30, 33	C	50	27	0.90
	Grade A50	21, 22, 31, 32	C	50	27	1.00
ASTM A672	Grade A55	10, 13	C	55	30	0.90
	Grade A55	11, 12	C	55	30	1.00
	Grade A55	20, 23, 30, 33	C	55	30	0.90
	Grade A55	21, 22, 31, 32	C	55	30	1.00
ASTM A672	Grade B55	10, 13	C	55	30	0.90
	Grade B55	11, 12	C	55	30	1.00
	Grade B55	20, 23, 30, 33	C	55	30	0.90
	Grade B55	21, 22, 31, 32	C	55	30	1.00
ASTM A672	Grade B60	10, 13	C	60	32	0.90
	Grade B60	11, 12	C	60	32	1.00
	Grade B60	20, 23, 30, 33	C	60	32	0.90
	Grade B60	21, 22, 31, 32	C	60	32	1.00
ASTM A672	Grade B65	10, 13	C	65	35	0.90
	Grade B65	11, 12	C	65	35	1.00
	Grade B65	20, 23, 30, 33	C	65	35	0.90
	Grade B65	21, 22, 31, 32	C	65	35	1.00
ASTM A672	Grade B70	10, 13	C	70	38	0.90
	Grade B70	11, 12	C	70	38	1.00
	Grade B70	20, 23, 30, 33	C	70	38	0.90
	Grade B70	21, 22, 31, 32	C	70	38	1.00
ASTM A672	Grade C55	10, 13	C	55	30	0.90
	Grade C55	11, 12	C	55	30	1.00
	Grade C55	20, 23, 30, 33	C	55	30	0.90
	Grade C55	21, 22, 31, 32	C	55	30	1.00
ASTM A672	Grade C60	10, 13	C	60	32	0.90
	Grade C60	11, 12	C	60	32	1.00
	Grade C60	20, 23, 30, 33	C	60	32	0.90
	Grade C60	21, 22, 31, 32	C	60	32	1.00
ASTM A672	Grade C65	10, 13	C	65	35	0.90
	Grade C65	11, 12	C	65	35	1.00
	Grade C65	20, 23, 30, 33	C	65	35	0.90
	Grade C65	21, 22, 31, 32	C	65	35	1.00
ASTM A672	Grade C70	10, 13	C	70	38	0.90
	Grade C70	11, 12	C	70	38	1.00
	Grade C70	20, 23, 30, 33	C	70	38	0.90
	Grade C70	21, 22, 31, 32	C	70	38	1.00
ASTM A672	Grade D70	10, 13	C Mn Si	70	50	0.90
	Grade D70	11, 12	C Mn Si	70	50	1.00
	Grade D70	20, 23, 30, 33	C Mn Si	70	50	0.90
	Grade D70	21, 22, 31, 32	C Mn Si	70	50	1.00
ASTM A672	Grade D80	10, 13	C Mn Si	80	60	0.90
	Grade D80	11, 12	C Mn Si	80	60	1.00
	Grade D80	20, 23	C Mn Si	80	60	0.90
	Grade D80	21, 22	C Mn Si	80	60	1.00
ASTM A672	Grade N75	10, 13	C Mn Si	75	42	0.90
	Grade N75	11, 12	C Mn Si	75	42	1.00
	Grade N75	20, 23, 30, 33	C Mn Si	75	40	0.90
	Grade N75	21, 22, 31, 32	C Mn Si	75	40	1.00
Plate Specification
Pipe Grade		Type of Steel		ASTM Specification
				No.		Grade
A 45		plain carbon		A285/A285M		Grade A
A 50		plain carbon		A285/A285M		Grade B
A 55		plain carbon		A285/A285M		Grade C
B 60		plain carbon, killed		A515/A515M		Grade 60
B 65		plain carbon, killed		A515/A515M		Grade 65
B 70		plain carbon, killed		A515/A515M		Grade 70
C 55		plain carbon, killed, fine grain		A516/A516M		Grade 55
C 60		plain carbon, killed, fine grain		A516/A516M		Grade 60
C 65		plain carbon, killed, fine grain		A516/A516M		Grade 65
C 70		plain carbon, killed, fine grain		A516/A516M		Grade 70
D 70		manganese-silicon—normalized		A537/A537M		Grade 1
D 80		manganese-silicon—Q&T^A		A537/A537M		Grade 2
H 75		manganese-molybdenum—normalized		A302/A302M		Grade A
H 80		manganese-molybdenum—normalized		A302/A302M		Grade B, C or D
J 80		manganese-molybdenum—Q&T^A		A533/A533M		Grade Cl-1^B
J 90		manganese-molybdenum—Q&T^A		A533/A533M		Grade Cl-2^B
J 100		manganese-molybdenum—Q&T^A		A533/A533M		Grade Cl-3^B
K 75		chromium-manganese-silicon		A202/A202M		Grade A
K 85		chromium-manganese-silicon		A202/A202M		Grade B
L 65		molybdenum		A204/A204M		Grade A
L 70		molybdenum		A204/A204M		Grade B
L 75		molybdenum		A204/A204M		Grade C
N 75		manganese-silicon		A299/A299M		…
^AQ&T = quenched and tempered. ^BAny grade may be furnished


Heat Treatment Parameters^A
Pipe Grade^B	Specification and Grade^c	Post-Weld Heat-Treat Temperature Range, °F (°C)		Normalizing Temperature, max, °F (°C)	Quenching Temperature, max, °F (°C)	Tempering Temperature, min, °F (°C)
A 45	A 285A	1100–1250 [590–680]		1700 [925]	…	…
A 50	A 285B	1100–1250 [590–680]		1700 [925]	…	…
A 55	A 285C	1100–1250 [590–680]		1700 [925]	…	…
B 60	A515-60	1100–1250 [590–680]		1750 [950]	…	…
B 65	A515-65	1100–1250 [590–680]		1750 [950]	…	…
B 70	A515-70	1100–1250 [590–680]		1750 [950]	…	…
C 55	A516-55	1100–1250 [590–680]		1700 [925]	1650 [900]	1200 [650]
C 60	A516-60	1100–1250 [590–680]		1700 [925]	1650 [900]	1200 [650]
C 65	A516-65	1100–1250 [590–680]		1700 [925]	1650 [900]	1200 [650]
C 70	A516-70	1100–1250 [590–680]		1700 [925]	1650 [900]	1200 [650]
D 70	A537-1	1100–1250 [590–680]		1700 [925]	…	…
D 80	A537-2	1100–1250 [590–680]		…	1650 [900]	1200 [650]
H 75	A 302-A	1100–1250 [590–680]		1800 [980]	…	1100 [590]
H 80	A 302-B, C or D	1100–1250 [590–680]		1800 [980]	…	1100 [590]
J 80	A 533-C11^C	1100–1250 [590–680]		…	1800 [980]	1100 [590]
J 90	A 533-C12^C	1100–1250 [590–680]		…	1800 [980]	1100 [590]
J 100	A 533-C13^C	1100–1250 [590–680]		…	1800 [980]	1100 [590]
K 75	A 202A	1100–1200 [590–650]		…	…	…
K 85	A 202B	1100–1200 [590–650]		…	…	…
L 65	A 204A	1100–1200 (590–650)		…	…	…
L 70	A 204B	1100–1200 (590–650)		…	…	…
L 75	A 204C	1100–1200 (590–650)		…	…	…
N 75	A299	1100–1200 (590–650)		1700 [925]	…	…
^AWhere ellipses (…) appear in this table, there is no requirement. ^BNumbers indicate minimum tensile strength in ksi. ^CAny grade may be used.


Wall Thickness: Welded and Seamless Wrought Steel Pipe, ANSI /ASME B36.10M
Schedule (SCH)	SCH 5	SCH 10	SCH 20	SCH 30	SCH STD	SCH 40	SCH 60	SCH XS
	SCH 80	SCH 100	SCH 120	SCH 160		SCH XXS	SCH XX.H
End of pipe end
Plain Ends (PE)		The PE pipes will generally be used for the smaller diameters pipe systems and in combination with Slip On flanges and Socket Weld fittings and flanges.

Threaded Ends (TE)		The TE implementation speaks for itself, this performance will generally used for small diameters pipe systems, and the connections will be made with threaded flanges and threaded fittings.

Beveled Ends (BE)		The BE implementation is applied to all diameters of buttweld flanges or buttweld fittings, and will be directly welded (with a small gap 3-4 mm) to each other or to the pipe. Ends are mostly be beveled to angle 30° (+ 5° / -0°) with a root face of 1.6 mm (± 0.8 mm).


Grooved ends		(example Victaulic pipes): these are pipes that allow a quick connection, used for non-critical applications
Threaded and coupled ends		(T&C), generally used for gas distribution, Threaded connections are the most common pipe fittings used in oil and gas transportation systems. Due to external vibrations, cyclic loads, and pollution, the fitting parts may start getting loose, which could result in pipeline leaks and other environmental disasters. It is of great significance to develop a reliable technique that could provide…




Type end : Plain Ends / Beveled Ends: Pipe
• Bevel End (BE) • Bevel Both Ends (BBE) • Bevel Large End (BLE) • Bevel One End (BOE) • Bevel Small End (BSE) • Bevel for Welding (BFW) • Buttweld End (BE)		• End of Pipe (EOP) • Flange One End (FOE) • Plain End (PE) • Plain Both Ends (PBE) • Plain One End (POE) • Thread End (TE) • Thread Both Ends (TBE)				• Thread Large End (TLE) • Thread One End (TOE) • Thread Small End (TSE) • Threads Only (TO) • Threads per Inch (TP I)








Plastic End Caps for Tubing and Pipe Ends
Pipe End Caps		Pipe End Plugs			Threaded Pipe Caps		Threaded Pipe Plugs
The American Society Of Mechanical Engineers					American National Standards Institute
ASME B36.19M					ANSI B36.19
ASME B36.10M					ANSI B36.10

Coating Pipe ASTM A672
External FBE Coating Pipe (Pipe PP) – Pipe PE Pipe Epoxy (FBE)		Fusion Bonded Epoxy (FBE) coating protects pipe surfaces against corrosion. Double or triple layers of FBE may even increase the resistance to friction and abrasion. FBE coating is also used as the primer layer in 3-layer PE/PP coating systems. Electrostatic epoxy powder is sprayed onto a pipe at a temperature typically around 220 – 235°C. On reaching the hot pipe surface, the epoxy powder melts and forms an uniform layer of epoxy coating on the pipe.




3 Layer PP/PE Coating Pipe (Pipe FBE ) – ( Pipe PE/PP layer		In addition to an anti-corrosion layer of FBE coating, mechanical protection can be added by applying a layer of Polyethylene (PE) or Polypropylene (PP). An adhesive layer takes care of the bonding between the FBE and PE/PP layer. Granules of PE/PP are extruded onto the passing pipe, forming a solid coating layer. Side extrusion is most commonly used, where a sheet of PE/PP is wrapped around a pipe. For smaller diameter pipes, so-called sleeve/ring extrusion is a common process.




External Liquid Coating Pipe (Pipe PU)		With external liquid coating, coating is applied to the outside pipe surface by a spraying system, providing corrosion protection for the pipe surfaces. There are multiple coating types available e.g. liquid epoxy, polyurethane (PU), or e.g. (UV-curable) laquer.


Internal Liquid Lining Pipe polyurethane (PU), or 2-component coating.		Internal liquid lining is a coating layer on an internal pipe surface to protect against corrosion or to optimize flow efficiency. There are multiple coating types available such as liquid epoxy, polyurethane (PU), or 2-component coating. After placing the pipe in the internal liquid coating station, the pipe ends are sealed off and a lance with the spraying gun system is moved through the pipe. Pre-heating could be an option for internal liquid coating.




Internal FBE Lining Pipe Fusion Bonded Epoxy (FBE)		An internal FBE coating is used to protect the inner surfaces of steel pipes from the influence of corrosion and light mechanical impacts and it provides excellent resistance to cathodic disbondment. The internal Fusion Bonded Epoxy (FBE) system is based on an epoxy powder spray system, mounted on a lance. The lance moves through the pipe while the epoxy powder is sprayed onto the internal pipe surface. The pipe must be heated so that the epoxy powder melts onto the pipe. After FBE application, the layer requires curing.





Cement Mortar Lining (CML) Pipe		Cement Mortar Lining (CML) is a method for applying a mixture of sand, cement and water onto internal pipe surfaces using a centrifugal spinning or pooring method. A smooth and compact layer of cement mortar protects water pipes against corrosion and abrasion. A characteristic of CML is that blasting the pipe surfaces is not necessarily required prior to the CML application. Selmers has solutions for factory applied and in-situ applied CML.




Concrete Weight Coating 3LPE/PP-coated Pipe		During the concrete weight coating process, concrete is applied onto the pipe. The concrete layer adds additional weight to pipes to compensate the buoyancy of submarine pipelines, and it also provides protection from external influences. Impingement: 3LPE/PP-coated pipes with weld cage or wire mesh reinforcement. Concrete is sprayed at the pipe by high speed application drums. Compression: FBE or 3LPE/PP coated pipes with concrete wrapped around the pipe along with wire mesh reinforcement.




PU Foam Coating polyurethane foam (PUF) Pipe		To keep substances in a pipeline at the correct temperature, polyurethane foam (PUF) insulation coating is commonly used for hot oil transmission lines as well as in district heating and cooling. Pipe-in-pipe application consists of an inner pipe and an outer jacket; the space between them is filled with PUF. Another manner for applying PUF is spraying PUF onto a rotating pipe, with an optional extra mechanical protection layer.




PP Foam Coating Multi-layer coating with polypropylene (PP) Pipe		Multi-layer coating with polypropylene (PP) foam providing high thermal insulation; this is used for deepwater pipeline projects. In some cases glass synthetic PP (PP enforced with glass fibre spheres) is used instead of PP foam. On top of a 3-layer PP coating, various layers of PP foam ensure a pipe gets the insulating characteristics required. Finally, mechanical protection is added with a solid top layer of PP.




Material Lined Pipe / Lining Pipe, ASTM A672
Teflon (PTFE) Lined Pipe		Teflon (PTFE) Lining Pipe		Cement mortar Lined Pipe
Cement mortar Lining Pipe		Liquid epoxy Lined Pipe		Liquid epoxy Lining Pipe
Glass Lined Pipe		Glass Lining Pipe		Fusion bonded epoxy (FBE) Lining Pipe
Fusion bonded epoxy (FBE) Lined Pipe		Polyethylene Lining Pipe		Bituminous asphalt Lined Pipe
Polyethylene Lined Pipe		Bituminous asphalt Lining Pipe		bitum Lined Pipe
bitum Lining Pipe		Zinc Lined Pipe		Zinc Lining Pipe
galvanized Lined Pipe		galvanized Lining Pipe		PFA-Lined Pipe
PFA Lining Pipe		Rubber Lined Pipe		NRB Lined Pipe
Rubber Lining Pipe		NRB Lining Pipe		Polypropylene (PP) Lined Pipe
Polypropylene (PP) Lining Pipe		Ethylene tetraflurorethylene Lined Pipe		Ethylene tetraflurorethylene Lining Pipe
ETFE Lined Pipe		ETFE Lining Pipe		polytetrafluroethylene Lined Pipe
polytetrafluroethylene Lining Pipe		Polyvinylidene Fluoride Lined Pipe		PVDF Lining Pipe
Polyvinylidene Fluoride Lining Pipe		Perfluoroalkoxy alkane Lined Pipe		PVDF Lined Pipe
Fluorinated ethylene propylene Lined Pipe			Fluorinated ethylene propylene Lining Pipe
EFP Lined Pipe		EFP Lining Pipe
Pipe Coating ( Coated Pipes) ASTM A672
Three-layer Polyethylene (3LPE) Pipe		3 layers Polypropylene (3LPP) Pipe			Epoxy
Polypropylene (PUR) Pipe		Fusion Bonded Epoxy (FBE) Pipe			pickl.
3-Layer Polyolefin Coatings		Asphalt enameled and polyurethane (PUR) Pipe			soaked in oil
2-Layer Polyolefin Coatings		Fusion Bonded and Liquid Bonded Epoxy, pipe			galvanized
Fusion Bonded Epoxy Coating		1-Layer Polyolefin Coatings		3 Layer PP/PE Coating
3 LPE (External 3 Layer Polyethylene)		Flow Efficiency Coatings for gas pipelines Liquid Epoxy Coatings for water pipelines			pickled
3 LPP (External 3 Layer Polypropylene)		FBE (External Fusion Bonded Epoxy		External Liquid Coating
Internal Liquid Lining		External FBE Coating		Internal FBE Lining
Cement Mortar Lining		Concrete Weight Coating		PU Foam Coating
Black Coated		PP Foam Coating		phosphated
zinc coated	hot dipped galvanized		hot-dipped zinc-coated		oiled and plugged
pickled and oiled		cold galvanized		external protection

Dimensions of Steel Pipes ASME B36.10 and B36.19
Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures ASTM A672
1/2 inches to 2 inches
NPS	1/2"	3/4"	1"	1¼"	1½"	2"
OD	21.3	26.7	33.4	42.2	48.3	60.3
	Wall Thickness
Sch 5	1.65	1.65	1.65	1.65	1.65	1.65
Sch 5S	1.65	1.65	1.65	1.65	1.65	1.65
Sch 10	2.11	2.11	2.77	2.77	2.77	2.77
Sch 10S	2.11	2.11	2.77	2.77	2.77	2.77
Sch 20	–	…	–	…	–	…
Sch 30	2.41	2.41	2.90	2.97	3.18	3.18
STD	2.77	2.87	3.38	3.56	3.68	3.91
Sch 40	2.77	2.87	3.38	3.56	3.68	3.91
Sch 40S	2.77	2.87	3.38	3.56	3.68	3.91
Sch 60	–	…	–	…	–	…
XS	3.73	3.91	4.55	4.85	5.08	5.54
Sch 80	3.73	3.91	4.55	4.85	5.08	5.54
Sch 80S	3.73	3.91	4.55	4.85	5.08	5.54
Sch 100	–	…	–	…	–	…
Sch 120	–	…	–	…	–	…
Sch 140	–	…	–	…	–	…
XXS	7.47	7.82	9.09	9.70	10.15	11.07
Sch 160	4.78	5.56	6.35	6.35	7.14	8.74
NPS = Nominal Pipe Size O.D. = Outside Diameter
Dimensions are in millimeters unless otherwise indicated.
DIMENSIONAL TOLERANCES FOR SEAMLESS AND WELDED PIPES ASTM A530
Nominal pipe size
up to 4 = ± 0.79 mm \| 5 thru 8 = + 1.58 mm / – 0.79 mm
10 thru 18 = + 2.37 mm / – 0.79 mm \| 20 thru 24 = + 3.18 mm / – 0.79 mm
Wall Thickness			Length		Weight
All Diameters = – 12.5%			+ 6.40 mm / – 0 mm		Weight = + 10% / – 1.5%
2 1/2 inches to 5 inches
NPS	2½"	3"	3½"	4"	5"
OD	73	88.9	101.6	114.3	141.3
	Wall Thickness
Sch 5	2.11	2.11	2.11	2.11	2.77
Sch 5S	2.11	2.11	2.11	2.11	2.77
Sch 10	3.05	3.05	3.05	3.05	3.40
Sch 10S	3.05	3.05	3.05	3.05	3.40
Sch 20		…			…
Sch 30	4.78	4.78	4.78	4.78	…
STD	5.16	5.49	5.74	6.02	6.55
Sch 40	5.16	5.49	5.74	6.02	6.55
Sch 40S	5.16	5.49	5.74	6.02	6.55
Sch 60		…			…
XS	7.01	7.62	8.08	8.56	9.53
Sch 80	7.01	7.62	8.08	8.56	9.53
Sch 80S	7.01	7.62	8.08	8.56	9.53
Sch 100		…			…
Sch 120		…		11.13	12.7
Sch 140		…			…
XXS	14.02	15.24		17.12	19.05
Sch 160	9.53	11.13		13.49	15.88
NPS = Nominal Pipe Size O.D. = Outside Diameter
Dimensions are in millimeters unless otherwise indicated.
DIMENSIONAL TOLERANCES FOR SEAMLESS AND WELDED PIPES ASTM A530
Nominal pipe size
up to 4 = ± 0.79 mm \| 5 thru 8 = + 1.58 mm / – 0.79 mm
10 thru 18 = + 2.37 mm / – 0.79 mm \| 20 thru 24 = + 3.18 mm / – 0.79 mm
Wall Thickness		Length		Weight
All Diameters = – 12.5%		+ 6.40 mm / – 0 mm		Weight = + 10% / – 1.5%
6 inches to 14 inches
NPS	6"	8"	10"	12"	14"
OD	168.3	219	273	323.9	355.6
	Wall Thickness
Sch 5	2.77	2.77	3.40	3.96	3.96
Sch 5S	2.77	2.77	3.40	3.96	3.96
Sch 10	3.40	3.76	4.19	4.57	6.35
Sch 10S	3.40	3.76	4.19	4.57	4.78
Sch 20		6.35	6.35	6.35	7.92
Sch 30		7.04	7.80	8.38	9.53
STD	7.11	8.18	9.27	9.53	9.53
Sch 40	7.11	8.18	9.27	10.31	11.13
Sch 40S	7.11	8.18	9.27	9.53	9.53
Sch 60		10.31	12.70	14.27	15.06
XS	10.97	12.70	12.70	12.70	12.70
Sch 80	10.97	12.70	15.09	17.48	19.05
Sch 80S	10.97	12.70	12.70	12.70	12.70
Sch 100		15.09	18.26	21.44	23.83
Sch 120	14.27	18.26	21.44	25.40	27.79
Sch 140		20.62	25.40	28.58	31.75
XXS	21.95	22.23	25.40	25.40
Sch 160	18.26	23.01	28.58	33.32	35.71
NPS = Nominal Pipe Size O.D. = Outside Diameter
Dimensions are in millimeters unless otherwise indicated.
DIMENSIONAL TOLERANCES FOR SEAMLESS AND WELDED PIPES ASTM A530
Nominal pipe size
up to 4 = ± 0.79 mm \| 5 thru 8 = + 1.58 mm / – 0.79 mm
10 thru 18 = + 2.37 mm / – 0.79 mm \| 20 thru 24 = + 3.18 mm / – 0.79 mm
Wall Thickness		Length		Weight
All Diameters = – 12.5%		+ 6.40 mm / – 0 mm		Weight = + 10% / – 1.5%
16 inches to 24 inches
NPS	16"	18"	20"	22"	24"
OD	406.04	457.2	508	558.8	609.6
	Wall Thickness
Sch 5	4.19	4.19	4.78	4.78	5.54
Sch 5S	4.19	4.19	4.78	4.78	5.54
Sch 10	6.35	6.35	6.35	6.35	6.35
Sch 10S	4.78	4.78	5.54	5.54	6.35
Sch 20	7.92	7.92	9.53	9.53	9.53
Sch 30	9.53	11.13	12.70

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