ISO 9001:2008 Registered
Hunan Standard Steel Co.,Ltd is as the one of member of Husteel Industry Group, as the professional manufacturer of steel pipe and pipe fittings,which has a complete system of production and sales serving our customers. 
Factory          Group
  
ERW Steel Pipe

ERW Steel Pipe

ERW (Electric Resistance Welded ) Steel Pipe, HFW (High-Frequency Welding) Steel Pipe

Specifications Range
Out Diameter 1/8 inch to 24 inch
Wall Thickness max 26.5mm
Length 3.0m-18m


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