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ERW Steel Pipe & ERW Casing

ERW Steel Pipe, ERW Casing, ERW Carbon Steel Pipe, MS ERW Pipe, GI ERW Pipe, Stainless ERW Pipe

Sizes:erw steel pipe

OD (Out Diameter): 21.3-660mm
WT (Wall Thickness): 1.0-20mm or  sch5, sch10, sch40, sch80, st, xs


Standard:

for erw pipe

ASTM A53 B, A106,  ASTM A178, ASTM A252

API 5L X42/46/52/56/60/70

ASTM A500, ASTM A513

EN 10204/10217 S235JR,S275JR, S355,S355JR,S355J2H


for efw pipe

carbon steel efw pipe: ASTM A671,ASTM A672

alloy steel efw pipe: ASTM A691


Coating

3PE Coating
 3PP Coating
 FBE Coating
 Epoxy Coating
 Special Painting

Uses:

For ERW Line Pipe

For ERW Casing

For ERW Structure Tube

For High pressure and high temperature


ERW Pipe

Tolerance of Outside Diameter

Standard Out Diameter
 Tolerance of Pipe End
 Tolerance of Pipe Body
API 5L

219.1～273.1

+1.6mm, -0.4mm
 ±0.75%
274.0～320
 +2.4mm, -0.8mm
 ±0.75%
323.9～457
 +2.4mm, -0.8mm
 ±0.75%
508
 +2.4mm, -0.8mm
 ±0.75%
559～610
 +2.4mm, -0.8mm
 ±0.75%


Tolerance of Wall Thickness

Standard
 Grade
 Out Diameter
 Wall Thickness
API 5L A 219.1～457
 +15%, -12.5%
B 508～610
 +17.5%, -12.5%
X42-X80 508～610
 +19.5%, -8%

Chemical Analysis and Mechanical Properties
Standard Class Grade
 Chemical Analysis(%)
 Mechanical Properties(min)(Mpa)
C Mn P S Tensile Strength
 Yield Strength
API 5L PSL1 B
 0.26
 1.20
 0.030
 0.030
 414
 241
X42
 0.26
 1.30
 0.030
 0.030
 414
 290
X46
 0.26
 1.40
 0.030
 0.030
 434
 317
X52
 0.26
 1.40
 0.030
 0.030
 455
 359
X56
 0.26
 1.40
 0.030
 0.030
 490
 386
X60
 0.26
 1.40
 0.030
 0.030
 517
 414
X65
 0.26
 1.45
 0.030
 0.030
 531
 448
X70
 0.26
 1.65
 0.030
 0.030
 565
 483
PSL2 B
 0.22
 1.20
 0.025
 0.015
 414
 241
X42
 0.22
 1.30
 0.025
 0.015
 414
 290
X46
 0.22
 1.40
 0.025
 0.015
 434
 317
X52
 0.22
 1.40
 0.025
 0.015
 455
 359
X56
 0.22
 1.40
 0.025
 0.015
 490
 386
X60
 0.22
 1.40
 0.025
 0.015
 517
 414
X65
 0.22
 1.45
 0.025
 0.015
 531
 448
X70
 0.22
 1.65
 0.025
 0.015
 565
 483
X80
 0.22
 1.85
 0.025
 0.015
 621 552

High-frequency straight seam electric-resistance welded steel pipe(erw steel pipe) is hot-rolled coil after forming machine, the use of high-frequency current skin effect and proximity effects, the tube edge heating and melting, squeeze roller under pressure welding to achieve production.

High-frequency resistance welding steel pipe, welding pipe and ordinary welding process is not the same, the weld is made of the base metal melt from the body, the mechanical strength is better than the general pipe. Smooth appearance, high precision, low cost weld high and small, favorable 3PE anti-corrosion coating. There are significant differences in the welding methods between high frequency welded pipe and submerged arc welded pipe. As the welding is done instantly at high speed, the difficulty of ensuring the quality of welding is much higher than that of submerged arc welding.


ERW Casing

Standard: API SPEC 5CT

Application: Casing serves as wall of well

Specification

OD

WT

End Type

inch

mm

inch

mm

Grade

J55

M65

N80/L80-1

P110

K55

8 5/8

219.08

0.304

7.72

-

PS

-

-

0.352

8.94

PSLB

PSLB

-

-

0.400

10.16

PSLB

PSLB

PLB

PLB

0.450

11.43

-

PLB

PLB

PLB

0.500

12.70

-

-

PLB

PLB

9 5/8

244.48

0.352

8.94

PSLB

PSLB

-

-

0.395

10.03

PSLB

PSLB

PLB

PLB

0.435

11.05

-

PLB

PLB

PLB

0.472

11.99

-

PLB

PLB

PLB

0.545

13.84

-

-

PLB

PLB

10 3/4

273.05

0.350

8.89

PSB

PSB

-

-

0.400

10.16

PSB

PSB

-

-

0.450

11.43

PSB

PSB

PSB

PSB

0.500

12.57

-

PSB

PSB

PSB

0.545

13.84

-

-

-

PSB

13 3/8

339.72

0.380

9.65

PSB

PSB

-

-

0.430

10.92

PSB

PSB

-

-

0.480

12.19

PSB

PSB

PSB

PSB

0.514

13.06

-

-

PSB

PSB

16

406.40

0.438

11.13

PSB

-

-

-

0.495

12.57

PSB

-

-

-

0.656

16.66

P

-

-

-

18 5/8

473.08

0.435

11.05

PSB

-

-

-

20

508

0.438

11.13

PSLB

-

-

-

0.500

12.70

PSLB

-

-

-

0.635

16.13

PSLB

--

-

-


Dimensional Tolerance

Standard

Tolerance of O.D.

Tolerance of W.T.

Straightness of Pipe Body

Straightness of Pipe End

Tolerance for Weight

API 5CT

+1%, -0.5%

-12.5%

≤0.2%L

≤3.18mm

+6.5%, -3.5%


Mechanical Properties

Standard

Grade

Yield Strength(Mpa)

Tensile Strength(Mpa)

Hardness(HRC)

Impact Energy(J)(min)

Impact Temperature(℃)

API 5CT

J55

379-552

≥517

-

T-10-20(SR16)

21

K55

379-552

≥655

-

L-10-27(SR16)

M65

448-586

≥586

≤22

T-10-20, L-10-41

C19-20, C76-77(SR16)

0

L80

552-655

≥655

≤23

N80

552-758

≥689

-

P110

758-965

≥862

-


Chemical Composition(%)

Standard

Grade

C

Mn

P

S

Ni

Cu

Si

API 5CT

J55

-

-

≥0.030

≥0.030

-

-

-

K55

-

-

≥0.030

≥0.030

-

-

-

M65

-

-

≥0.030

≥0.030

-

-

-

L80

≥0.43

≥1.90

≥0.030

≥0.030

≥0.25

≥0.35

≥0.45

N80

-

-

≥0.030

≥0.030

-

-

-

P110

-

-

≥0.030

≥0.030

-

-

-

Out diameter: 1/2" -24"    

Thickness: sch5, sch10, sch40, sch80, st, xs (according to the ASME B36.10M)


Small diameter erw pipe specification

Out diameter Sch 5 Sch 10 Sch 40
Inch mm Thickness Kg/mtr Thickness
 Kg/mtr
 Thickness
 Kg/mtr
1/2" 21.3 1.65 0.81 2.11 1.01 2.77 1.29
3/4" 26.7 1.65
 1.03 2.11 1.30 2.87 1.71
1" 33.4 1.65
 1.31 2.77 2.12 3.38 2.54
1 1/4" 42.2 1.65
 1.93 2.77 3.15 3.68 4.11
1 1/2" 48.3 1.65
 1.93 2.77 3.15 3.68 4.11
2" 60.3 1.65
 2.42 2.77 3.98 4.81 5.31
3" 88.9 2.11 4.58 3.05 6.54 5.49 11.45
3 1/2" 101.6 2.11 5.25 3.05 7.52 5.74 13.77
4" 114.3 2.11 5.25 3.05 7.52 5.74 13.77
5" 141.3 2.77 9.50 3.40 11.74 6.55 22.10
6" 168.3 2.77 11.47 3.40 14.04 7.11 28.68
8" 219.1 2.77 14.99 3.76 20.25 8.18 43.16

Large diameter erw pipe specification
OD WT
















Inch mm 8 5/8"
 219.1mm
 10 3/4"
 273.1mm
 12 3/4"
 325.0mm
 14"
 355.6mm
 16"
 406.4mm
 18"
 457.7mm
 20"
 508.0mm
 24"
 610mm
 24 4/5"
 630.0mm
0.157 4.0 ---- ---















0.197 5.0 --- --- --- --- --- --- --- ---









0.236 6.0 --- --- --- --- --- --- --- ---
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0.276 7.0 --- --- --- --- --- --- --- ---
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0.315 8.0 --- --- --- --- --- --- --- ---
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0.354 9.0 --- --- --- --- --- --- --- ---
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0.394 10.0 --- --- --- --- --- --- --- ---
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0.133 11.0 --- --- --- --- --- --- --- ---
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0.492 12.5 --- --- --- --- --- --- --- ---
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0.551 14.0



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0.630 16.0



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0.689 17.5







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0.748 19.0









---
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0.787 20.0











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UAE
ASTM A53 GR.B
89*sch80
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 Nigeria
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ASTM A672
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Spain
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Singapore
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 Venezuela
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Mexico
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Bolivia

ASTM. A53

black steel pipe (ERW) 
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 Ghana
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 Jordan
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United Arab Emirates
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 Irap
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 Bangladesh
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Nigeria
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 Iran
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3'' 88,9X5,5X6,10
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 Yemen
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 Chile
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Jordan
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 Australia
API 5L GRB/ASTM A53 GRB
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 United States
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OD 273.1 mm Weight 31.23 LB/Ft, wall thickness 7.09 mm    
6000 meters 
 United Arab Emirates
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Dia 25mm x 3mm thick
4300 tons
Malaysia                 
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25000 pcs
 Qatar
EN 10219 S275OH
406.4x30x12000MM
750 PCS
 Singapore
API 5L/ ASTM A 53 B
28 inch Sch.: STD.Unit Length: 6 Meter
15000 Meter
 Oman
ASTM A106/API 5L GRADE B
SCH 20/XS (12.7)*700A, (28'') 6.0MR
2400 Mtr.
Maroc
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14" BW SCH 20
840 pieces
 Tunisia
ASTM A 178 Gr A ERW
OD: 63.5mm, SCH 20, L: 10060mm
1800 PCS
 Egypt
ASTM A53 GR.B
127 OD  X 3.6mm X 7.5 metre length
480 MT

Syria
ASTM A53 GR.B
6" sch40 6m length
300 lengths


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