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% |
| 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 |
||
