ERW Pipe- Electric Resistance Welded Steel Pipe | |
Usage: | Used for low pressure liquid delivery, such as water, gas and oil. |
Standard: | API5L, BS1387,ASTM A53/A106,EN10219,EN10210,EN10255,JIS G3452,JIS G3454,JIS G3456 |
Certificate: | API 5L,CE,IS09001:2015,IS014001:2015; |
Out Diameter: | 26.7mm-660mm |
Wall Thickness: | 1.5-16mm |
Length: | 1m-12m or as your requirement |
End: | Plain, Bevelled, Threading, Grooved,etc; |
Surface Treatment: | galvanized, oiled, painting, epoxy coating, 3Lpe, vanish coating; |
Inspection: | With Hydraulic Testing, Eddy Current , Infrared Test; |
Packing: | Bundled with steel strips; 10*-24":loose package; |
Shipment: | By container or bulk vessel; |
Trade Terms: | FOB/CIF/CFR; |
Delivery time: | Normally within 10-20 days; |
Payment Terms: | TT or LC; |
Pipe ordered under this specification is used for structural.
Chemical composition-wall thickness≤120mm |
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Steel Grade |
% by mass, maximum |
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Steel Name |
Steel Number |
C |
Si |
Mn |
P |
S |
N |
|
|
|
≤40 |
>40≤120 |
|
|
|
|
|
S355J2H |
1.0576 |
0.22 |
0.22 |
0.55 |
1.60 |
0.030 |
0.030 |
- |
High-frequency welding is the use of skin effect to make the high-frequency current energy concentrated on the surface of the workpiece; The proximity effect is used to control the position and range of the high frequency current flow route. The speed of the current is very fast, it can heat the edge of the adjacent steel plate in a very short time, melt, and realize the docking through extrusion each has its own advantages, but also has its own shortcomings. It is generally necessary to analyze specific choices according to specific circumstances.
The process of manufacturing Electric Resistance Welding(ERW) Pipe is as follows:
Open plate probe → Straightening milling → cutting forming → Butt welding cutting → Visual inspection → Ultrasonic inspection → X-ray inspection → Pressure test → Flat chamfering → Final inspection
Bare pipe or Black / Varnish coating ( customized);
in bundles or in loose;
Both ends with end protectors;
Plain end, bevel end(2"and above with bevel ends, degree: 30~35°), threaded and coupling;
Marking.
MECHANICAL PROPERTIES |
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Steel Grade |
Minimum Yield Strength (Mp) |
Tensile Strength (Mp) |
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|
Specified Thickness (mm) |
Specified Thickness (mm) |
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Steel Name |
Steel Number |
≤16 |
>16≤40 |
>40≤63 |
>63≤80 |
>80≤100 |
>100 ≤120 |
≤3 |
>3 ≤100 |
>100 ≤120 |
S355J2H |
1.0576 |
355 |
345 |
335 |
325 |
315 |
295 |
510-580 |
470-630 |
450-600 |
Specification |
OD≤2500mm W.T≤120mm |
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OD |
±1% Minimum:±0.5mm,Maximum:±10mm |
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W.T |
-10% |
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Weight |
±6% |
||
Length |
Length Scope |
4m≤L≤6m |
±500mm |
|
Fixed Length |
4m≤L≤6m |
+10mm |
|
|
>6m |
+15mm |