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Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71

Product info

Supplier: Tapgroup internation.,JSC
Address: Số 32 Lô N4D, đường X2A, Yên Sở, Hoàng Mai, Hà Nội
Phone: 0084 933 86 77 86
Email: info@tapgroup.vn
Website: https://supplier-pipe-tube-ongthep.com
Insurance: 12 tháng
Status: Mới 100%
Origin: China, Korea, Malaysia, Thailand, Japan, EU, G7
Catalogue Profile
Name Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71
Type Of Pipe Electric-Fusion-Welded Steel Pipe EFW Pipe
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71 EFW Pipe A671 Grade CF 71
Standard Specification for
Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
Plate specifications
Pipe grade Type of steel  ASTM specification
No. Grade
CF 71 nickel steel A 203/A 203M E
Heat treatment parameters
Pipe grade ASTM specification and grade Post weld
heat treatment
temperature range °F (°C) 		Normalizing
temperature, max,
°F (°C) 		Quenching
temperature,
max, °F, (°C) 		Quenching
temperature,
min, °F, (°C) 		Precipitation
heat treatment
temperature range °F (°C)
CF 71 A 203/A 203M (E) 1100-1175 (590-635) 1750 (950) … … …
ANumber indicate minimum tensile strength in ksi.
BIn no case shall be the post-weld heat-treatment temperature exceed the mill tempering temperature.
CTempering range 1100 to 1300 (590 to 705), if accelerated cooling ultilized per specification A516/a 516M.
DPer ASME Section VIII specification A 517/A 517M specified 1650 (900) minimum quenching temperature.
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
Product related keywords
Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures A671 Grade CF 71
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71 EFW Pipe, A671 Grade CF 71
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 5 Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 10
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 20 Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 30
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH STD Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 40
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 60 Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH XS
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 80 Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 100
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 120 Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 160
Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH XXS Electric-Fusion-Welded Steel Pipe, A671 Grade CF 71, SCH 160
Coated and Lined Pipe
Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures A671 Grade CF 71
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
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)
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 Atmospheric and Lower Temperatures ASTM A671 Grade CF 71
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 12.70 14.27
STD 9.53 9.53 9.53 9.53 9.53
Sch 40 12.70 14.27 15.09 … 17.48
Sch 40S 9.53 9.53 9.53 … 9.53
Sch 60 16.66 19.05 20.62 22.23 24.61
XS 12.70 12.70 12.70 12.70 12.70
Sch 80 21.44 23.83 26.19 28.58 30.96
Sch 80S 12.70 12.70 12.70 … 12.70
Sch 100 26.19 29.36 32.54 34.93 38.89
Sch 120 30.96 34.93 38.10 41.28 46.02
Sch 140 36.53 39.67 44.45 47.63 52.37
XXS   …   …  
Sch 160 40.49 45.24 50.01 53.98 59.54
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%
26 inches to 48 inches 
26" > 48" Wall Thickness and Weight
NPS OD   5 5S 10
26 660 wt     7.92
kg/m 127.36
28 711 wt     7.92
kg/m 137.32
30 762 wt 6.35 6.35 7.92
kg/m 118.34 118.31 147.29
32 813 wt     7.92
kg/m 157.25
34 864 wt     7.92
kg/m 167.21
36 914 wt     7.92
kg/m 176.97
38 965 wt      
kg/m
40 1016 wt      
kg/m
42 1067 wt      
kg/m
44 1118 wt      
kg/m
46 1168 wt      
kg/m
48 1219 wt      
kg/m
26 – 48 Wall Thickness and Weight
NPS OD   10S 20 30
26 660 wt   12.70  
kg/m 202.74
28 711 wt   12.70 15.88
kg/m 218.71 272.23
30 762 wt 7.92 12.70 15.88
kg/m 132.91 234.68 292.20
32 813 wt   12.70 15.88
kg/m 250.65 312.17
34 864 wt   12.70 15.88
kg/m 266.63 332.14
36 914 wt   12.70 15.88
kg/m 282.29 351.73
38 965 wt      
kg/m
40 1016 wt      
kg/m
42 1067 wt      
kg/m
44 1118 wt      
kg/m
46 1168 wt      
kg/m
48 1219 wt      
kg/m
26 – 48 Wall Thickness and Weight
NPS OD   STD 40 XS
26 660 wt 9.53   12.70
kg/m 152.88 202.74
28 711 wt 9.53   12.70
kg/m 164.86 218.71
30 762 wt 9.53   12.70
kg/m 176.85 234.68
32 813 wt 9.53 17.48 12.70
kg/m 188.83 342.94 250.65
34 864 wt 9.53 17.48 12.70
kg/m 200.82 364.92 266.63
36 914 wt 9.53 19.05 12.70
kg/m 212.57 420.45 282.29
38 965 wt 9.53   12.70
kg/m 224.56 298.26
40 1016 wt 9.53   12.70
kg/m 236.54 314.23
42 1067 wt 9.53   12.70
kg/m 248.53 330.21
44 1118 wt 9.53   12.70
kg/m 260.52 346.18
46 1168 wt 9.53   12.70
kg/m 272.70 361.84
48 1219 wt 9.53   12.70
kg/m 284.25 377.81
NPS = Nominal Pipe Size
O.D. = Outside Diameter
WT = Walltickness
KG/M = Kilogram per meter
Dimensions are in millimeters unless otherwise indicated
Weights are in kilograms p/meter and approximately given
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