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| Customization: | Available |
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| After-sales Service: | 3years |
| Warranty: | 2years |
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En 10216 P235gh P265gh Seamless Mild Steel Pipe Heat Exchanger tube
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Material |
Gr.A&B, X42, X46, X52, X56, X60, X65, X70, X80, ASTM A53Gr.A&B,ASTM A106 Gr.A&B, ASTM A135, ASTM A252, ASTM A500, DIN1626, ISO559, ISO3183.1/2, KS4602, GB/T911.1/2,SY/T5037, SY/T5040 STP410,STP42. |
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Certificates |
ISO 9001:2008 TUV SGS BV etc |
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Outside Diameter |
1/2'--24' |
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21.3mm-609.6mm |
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Thickness |
SCH5S, SCH10S, SCH20S,SCH20, SCH30,STD, SCH40, SCH60, SCH80, SCH100, SCH140, SCH160,XS, |
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1.65mm-59.54mm |
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Length |
5.8m 6m Fixed, 12m Fixed, 2-12m Random. |
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Technic |
1/2'--6': hot piercing processing technic |
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6'--24' : hot extrusion processing technic |
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Surface Treatment |
Black Painted, Galvanized, Natural, Anticorrosive 3PE coated,polyurethane foam Insulation . |
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Packing |
Bundles or In bulk. bundled pipes with two slings at the both end for easy loading and discharging, |
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End |
Bevel end(>2"), Plain (≤2"),with plastic cap, with screwed and socket. |
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Usage /Application |
Oil pipe line, Drill pipe, Hydraulic pipe, Gas pipe, Fluid pipe, Boiler pipe,Conduit pipe, Scaffolding pipe pharmaceutical and ship building etc. |
| Property | P235GH | P265GH | P295GH | P355GH |
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| Standard | EN 10216-1 | EN 10216-1 | EN 10216-1 | EN 10216-1 |
| Equivalent ASTM | A106 Gr. A | A106 Gr. B | ||
| C (max) | 0.16% | 0.20% | 0.20% | 0.22% |
| Mn (max) | 1.20% | 1.40% | 1.40% | 1.60% |
| P (max) | 0.025% | 0.025% | 0.025% | 0.025% |
| S (max) | 0.020% | 0.020% | 0.020% | 0.020% |
| Tensile (MPa) | 360-480 | 410-530 | 440-570 | 490-630 |
| Yield (MPa) | ≥235 | ≥265 | ≥295 | ≥355 |
| Elongation (min) | 25% | 24% | 23% | 22% |
| Impact Test Temp | -10°C (Optional) | -10°C (Optional) | -20°C (Optional) | -20°C (Optional) |
| Max Temp (Continuous) | 350°C | 400°C | 425°C | 450°C |
| Pressure Rating | Low-Medium | Medium | Medium-High | High |
| Typical Applications | Low-pressure steam, water lines | Medium-pressure boilers, process piping | High-pressure steam, oil/gas transmission | Power plant headers, high-stress piping |
Strength Progression
P235GH → P355GH: Increasing carbon/manganese content enhances strength but reduces weldability
Yield strength increases by ~50% from P235GH to P355GH
Weldability Considerations
P235GH: Best weldability (lowest carbon equivalent = ~0.35)
P355GH: Requires preheat (>75°C) for thick sections (CE ~0.45)
All grades require post-weld heat treatment (PWHT) for thicknesses >35mm
Temperature Limitations
P235GH/P265GH: Not recommended for service >400°C (graphitization risk)
For >450°C service, consider 13CrMo4-5 (EN 10216-2) alloy steel
Impact Testing
"GH" suffix indicates suitability for elevated temperatures
"NL" grades (e.g., P355NL) are Charpy tested at -50°C for low-temp service
Dimensional Tolerances
OD: ±0.75% (hot-finished), ±0.5% (cold-drawn)
WT: +15%/-10% (standard), +10%/-5% (special tolerance)
Mill Test
| Application | Recommended Grade | Reason |
|---|---|---|
| Low-pressure water pipelines | P235GH | Cost-effective |
| Medium-pressure steam boilers | P265GH | Balanced strength/weldability |
| High-pressure oil transmission | P295GH | Better strength than P265GH |
| Power plant steam headers | P355GH | Highest strength in EN 10216-1 |


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Q: How soon you can deliver the goods after placing the order?
A: For stock: within 5-7 days;