EN10216-2 P235GH TC1 SEAMLESS J TUBE AND U BEND TUBE FOR HEAT EXCHANGER BOILER
EN10216-2 P235GH TC1 Seamless J-Tube is a seamless steel tube manufactured in accordance with the European standardEN 10216-2,made fromP235GHmaterial,withTC1testing category,and formed into a"J"shape(a bent tube with one leg longer than the other,similar to a U-tube but with unequal straight ends).
EN 10216-2European standard for seamless steel tubes for pressure purposes at elevated temperatures.
P235GH Material grade a non-alloy,heat-resistant steel for pressure equipment."P"=pressure,"235"=minimum yield strength of 235 MPa at room temperature,"GH"=suitable for high-temperature service(up to~400°C).
TC1Testing Category 1–the basic level of non-destructive and mechanical testing requirements(e.g.,tensile,flattening,bending tests,and hydrostatic or ultrasonic examination per batch).
J-Tube A bent tube configuration shaped like a"J",with one straight end longer than the other.It is a variant of the U-tube,designed for compact or specific piping layouts.
Main Applications
This type of tube is specifically designed for high-temperature and high-pressure service.Its primary uses include:
-Steam boilers–e.g.,water-wall panels,economizers,and low-pressure steam piping.
-Heat exchangers–tube bundles for condensers,feedwater heaters,and cooling systems.
-Pressure vessels–components in chemical,petrochemical,and industrial pressure equipment.
-Piping systems–transport of hot water,steam,or high-temperature fluids in power plants and industrial facilities.
Key Advantages
Compared to ordinary carbon steel tubes,theEN10216-2 P235GH TC1 Seamless J-Tubeoffers the following advantages:
Excellent high-temperature performanceRetains good mechanical strength and creep resistance at operating temperatures up to~400°C.
Reliable pressure-bearing capacityMinimum yield strength of 235 MPa and good toughness meet demanding pressure equipment requirements.
Good weldability and workabilityThe low carbon equivalent makes it easy to weld and form during fabrication.
Seamless constructionNo welded seam means no weak points–significantly improves safety and reliability under high pressure.
Flexible design adaptabilityThe"J"shape allows for more compact equipment layouts and better thermal expansion compensation compared to straight or even U-shaped tubes.
P235GH Chemical Composition
| C |
≤0.16 |
| Si |
≤0.35 |
| Mn |
≤1.20 |
| P |
0.025 |
| S |
0.010 |
| Al |
≥0.020 |
| Cr |
≤0.30 |
| Cu |
≤0.30 |
| Mo |
≤0.08 |
| Nb |
≤0.020 |
| Ni |
≤0.30 |
| Ti |
≤0.40 |
| V |
≤0.02 |
P235GH Mechanical Properties
| Grade |
Tensile strength Rm |
Yield strength YS |
Enlongation A(％) |
| P235GH TC1 |
360- 500 MPa |
≥235 |
≥25 |
Dimensions tolerances of EN 10216-2
Tolerances on outside diameter and wall thicknes
| Outside Diameter D mm |
Tolerances on D |
Tolerances on T for a T/D ratio |
| |
|
≤ 0,025 |
> 0,025
≤ 0,050 |
> 0,050
≤ 0,10 |
> 0,10 |
| D ≤ 219,1 |
± 1% or ± 0.5mm
whichever is the greater |
± 12,5% or ± 0.4mm whichever is the greater |
| D > 219,1 |
± 20% |
± 15% |
± 12,5% |
± 10% a |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T |
Applications
- Boilers
- Pressure Vessels
- Heat Exchangers
- Piping Systems
- Energy Industry
- Chemical Industry
- Automotive and Mechanical Engineering
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