ERW Steel Pipe

Application

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 pipes are used in various engineering purposes, fencing, scaffolding, line pipes etc. ERW pipes are available in various qualities, wall thicknesses, and diameters of the finished pipes.

Specification

ERW (Electric Resistance Welded ) Steel Pipe, ERW Casing, ERW Carbon Steel Pipe, MS ERW Pipe, GI ERW Pipe

Out diameter: 1/2" -24"    

Weight Length: 1.0-20mm

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

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 ERF 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


Tolerance of Outside Diameter

StandardOut 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 5LA219.1~457
+15%, -12.5%
B508~610
+17.5%, -12.5%
X42-X80508~610
+19.5%, -8%


Chemical Analysis and Mechanical Properties

StandardClassGrade
Chemical Analysis(%)
Mechanical Properties(min)(Mpa)
CMnPSTensile Strength
Yield Strength
API 5LPSL1B
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
PSL2B
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
621552



Small Diameter ERW Pipe Specification


Out diameterSch 5Sch 10Sch 40
InchmmThicknessKg/mtrThickness
Kg/mtr
Thickness
Kg/mtr
1/2"21.31.650.812.111.012.771.29
3/4"26.71.65
1.032.111.302.871.71
1"33.41.65
1.312.772.123.382.54
1 1/4"42.21.65
1.932.773.153.684.11
1 1/2"48.31.65
1.932.773.153.684.11
2"60.31.65
2.422.773.984.815.31
3"88.92.114.583.056.545.4911.45
3 1/2"101.62.115.253.057.525.7413.77
4"114.32.115.253.057.525.7413.77
5"141.32.779.503.4011.746.5522.10
6"168.32.7711.473.4014.047.1128.68
8"219.12.7714.993.7620.258.1843.16


Large Diameter ERW Pipe Specification

ODWT
















Inchmm8 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
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Packing And Delivery

1.Packing: weaving bag, non-woven fabric, seaworthy bundle,wooden case if required.

2.Delivery: within 30 days after receiving L/C or TT.

Our Services

• Your inquiry related to our product & price will be replied within 24hours.

• Well-trained & experienced staff are to answer all your inquiries professional in English of course.

• Working time: 8:00am - 5:30pm, Monday to Friday.

• OEM is highly welcomed. We have strong R&D team here to help.

• Your business relationship with us will be confidential to any third party.

• Good after-sale service offered, please get back if you got question.

Our Services Company Information

Our company is a leading manufacturer of ERW steel pipes.

• 15 years experience, annual sales volume reaches 2.0 billion US dollars for the past five years.

• Good quality control in production process, ISO9001:2008,SGS,BV approved.

• Excellent quality and Competitive price, OEM is available.

• Available in an extensive range of stock or custom size.

• The whole process from material to finished products can be traced.

• Our factory is located in Tianjin,China.