P235GH steel is a non-alloy high-temperature pressure vessel steel plate belonging to the European standard system. Its main characteristic is its ability to maintain stable mechanical properties in high-temperature environments. Typically, this steel can operate continuously within a temperature range of -10 degrees Celsius to 450 degrees Celsius, and even up to 500 degrees Celsius for short periods. This high-temperature resistance makes it an ideal material for manufacturing equipment such as boilers, heat exchangers, and reactors.
P235GH pipe dimensions chart
p235GH pipe weight
The calculation formula is: Weight per meter (kg/m) = 0.02466 × wall thickness (mm) × (outer diameter (mm) - wall thickness (mm))
For example, the outer diameter of a P235GH seamless pipe is 108mm, and the wall thickness is 8mm. Substituting these values into the formula, we get: Weight per meter = 0.02466 × 8 × (108 - 8).
First, calculate the value inside the parentheses: 108 - 8 = 100.
Then, perform the multiplications: 0.02466 × 8 = 0.19728, and 0.19728 × 100 = 19.728 kg/m.
P235GH material specification
| size in Mm | 5 To 1219.2 |
|---|---|
| Schedule | Schedule XS, Schedule 160, Schedule 40, Schedule XXS, Schedule 80 Supplier and Manufacturer |
| Standard | JIS, EN, DIN, GB, IS, AISI, ASME, ASTM |
| Seamless Pipe Size in MM | 4 to 219 Wall thickness: 0.5 to 20 |
| Welded Pipe Size in MM | 5 to 1219.2 |
| Seamless Tube Size in MM | 3.35 To 101.6 |
| Length | Double Random, Single Random, Standard & Cut length |
| Wall Thickness in inch | 0.020 to 0.220 |
| Type | U bent, Straight, Seamless, Round, Welded, EFW, Tube Coil, ERW, Hydraulic, LSAW, Square, Fabricated, Boiler, Rectangular |
| Finish | BA, Polished, AP, MF |
| Form | Square, Hydraulic, Rectangular, Clad, U bent, Boiler, Hollow, LSAW, Straight, Round, |
| End | Beveled, Plain, Treaded |
| Pipe Marking | All Pipes are marked as follows: Supplier or Manufacturer's Name, Standard, Grade, OD, Thickness, Length, Heat Number |
What are the mechanical properties of P235gh pipe?
| EN 10216-2 Mechanical properties | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel grades | Mechanical properties during tensile testing in room temperature | Resilience | |||||||||||
| Upper yield limit or yield strength Re or R0.2 for wall thickness of t min | Tensile strength Rm | Elongation A min% |
Minimum energy average absorbed KVJ at the temperature of 0°C | ||||||||||
| T≤16 | 16<T≤40 | 40<t≤60 | 60<T≤60 | I | T | ||||||||
| MPa | MPa | MPa | MPa | MPa | I | t | 20 | 0 | -10 | 20 | 0 | ||
| P235GH | 235 | 225 | 215 | - | 360- 500 | 25 | 23 | - | 40 | 28 | - | 27 | |
P235GH Pipe Production process
Round billet heating: Continuously cast round billets are heated to approximately 1200°C to ensure plastic deformability.
Piercing and forming: Solid billets are transformed into hollow shells using a cross-rolling piercing mill, with strict control over wall thickness uniformity.
Pipe rolling and elongation: Multiple rolling passes are performed using a mandrel mill or push bench to refine grain structure.
Sizing and straightening: Cold-rolling or cold-drawing processes precisely control outer diameter tolerances (typically ±1%).
Heat treatment: Normalizing treatment (900°C ± 20°C) is applied to relieve internal stresses and optimize mechanical properties.
Non-destructive testing: 100% ultrasonic testing (UT) and eddy current testing (ET) are conducted to ensure the absence of cracks, inclusions, and other defects.
GNEE Group's steel pipe production has achieved fully automated manufacturing lines, with product tolerances reaching ±0.5% and surface roughness Ra ≤ 12.5 μm.
