Views: 6 Author: Site Editor Publish Time: 2025-08-22 Origin: Site
In July of this year, our regular customer from Singapore sent us a procurement request for P265GH seamless steel pipe. As a key customer of our company, we have specially customized a key customer service process for them, which includes detailed specifications from inquiry and quotation, order completion, procurement and production to packaging and shipping.
After receiving the order, our sales confirmed the order details according to the service process and immediately arranged the procurement and production process. The customer requests that this order of steel pipes strictly comply with the EN10216-2 European standard, and requires a material list and inspection report before shipment.
| Item | Material | Item Details | Size | Thk (mm) | Qty | Unit |
| 3 | P265GH/1.0425 | SEAMLESS PIPES BE × 6MTR | DN15 | 3.2 | 48 | M |
| 4 | P265GH/1.0425 | SEAMLESS PIPES BE × 6MTR | DN20 | 3.0 | 6 | M |
| 5 | P265GH/1.0425 | SEAMLESS PIPES BE × 6MTR | DN250 | 6.3 | 216 | M |
| 6 | P265GH/1.0425 | SEAMLESS PIPES BE × 6MTR | DN150 | 5.0 | 294 | M |
| 7 | P265GH/1.0425 | SEAMLESS PIPES BE × 6MTR | DN300 | 6.0 | 102 | M |
| TOTAL | 666 | M | ||||
In the production process, we have established a refined control system for the entire process, strictly following the EN 10216-2 standard, and ensuring product quality through multiple quality inspection processes. We have completed the production task as scheduled within the delivery period stipulated in the contract, and submitted the material certification documents and on-site acceptance photos to the customer as soon as possible.
For the special needs of sea freight exports, we adopt customized protection solutions: each steel pipe is equipped with a plastic cap to effectively avoid port collision and damage during transportation; At the same time, each P265GH seamless steel pipe is marked with a unique identifier on its surface, clearly indicating specifications, length, furnace number, and other information for customers to quickly complete acceptance checks. In the end, with excellent product quality and professional services, we have gained high recognition and praise from our customers.
P265GH seamless steel pipe is a carbon steel pipe specifically designed for high temperature and pressure applications, belonging to the EN10216-2 standard. EN 10216-2 is an important standard for alloy steel pipes for pressure equipment in Europe, which specifies the material properties, process characteristics, and application scope of steel pipes, providing important technical basis for related industries.
The EN 10216-2 standard includes P195GH（1.0348）、P235GH（1.0345）、P265GH（1.0425）、16Mo3（1.5415）、13CrMo4-5（1.7335） Waiting for materials.
| CHEMICAL | LIMITS | C | Si | Mn | P | S | Cr | Mo | Ni | Al | Cu | Nb | Ti | V | Cr+Cu+Mo+Ni |
| P265GH(1.0425) | MIN | 0.02 | |||||||||||||
| MAX | 0.20 | 0.40 | 1.40 | 0.025 | 0.020 | 0.30 | 0.08 | 0.30 | 0.3 | 0.01 | 0.04 | 0.02 | 0.7 |
The chemical composition of P265GH material is strictly controlled within a reasonable range: carbon content of 0.20%, ensuring the strength and weldability of the steel; Manganese content of 1.40% improves the hardenability and toughness of steel; Silicon content ≤ 0.40%, control splashing during welding; Phosphorus and sulfur content are ≤ 0.025% and ≤ 0.020%, respectively, effectively reducing the brittleness tendency of steel. In addition, it also contains trace amounts of aluminum (≥ 0.020%) as a deoxidizer to improve the internal structure of the steel.
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| P265GH(1.0425) | 410-570 | 265min | 25 min |
In terms of mechanical performance, P265GH seamless steel pipe exhibits excellent performance. Its yield strength is ≥ 265MPa, tensile strength is 410-570MPa, and elongation is ≥ 22%, ensuring structural stability under high temperature and high pressure. The impact energy at room temperature (KV2) is ≥ 34J, and the impact energy at -20 ℃ is ≥ 27J, indicating good low-temperature toughness. After normalizing treatment (880-920 ℃ insulation and air cooling), the steel structure presents a uniform ferrite+pearlite structure, with a grain size of over level 6, ensuring the stability and consistency of its performance.
The size range of P265GH seamless steel pipe is very wide, with an outer diameter range of 10.2mm to 711mm and a wall thickness range of 1.6mm to 100mm, which can meet the design requirements of different pipeline systems.
In addition, the length of seamless steel pipe is also one of the factors to consider when choosing. Generally speaking, the length of the product may mainly be between 6-12 meters, but this may also vary depending on the supplier and customization requirements.
Its dimensional tolerance is strictly controlled, with an outer diameter tolerance of ± 0.75% or ± 0.5% depending on the accuracy level, and a wall thickness tolerance of ± 10%, ± 7.5%, or even ± 5% (specially customized). The straightness is ≤ 1mm/m, and the end face perpendicularity is ≤ 0.05 × wall thickness. These precise dimensional controls ensure the sealing and structural stability of pipeline installation.
Outside Diameter D mm | Tolerances on D | Tolerances on T for a T/D ratio | |||
≤ 0,025 | > 0,025 | > 0,050 | > 0,10 | ||
≤ 0,050 | ≤ 0,10 | ||||
D ≤ 219,1 | ± 1% or ± 0.5mm | ± 12,5% or ± 0.4mm whichever is the greater | |||
D > 219,1 | whichever is the greater | ± 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 | |||||
Tolerances on inside diameter | Tolerances on T for a T/d ratio | |||||
d | d min | ≤ 0,03 | > 0,03 | > 0,06 | > 0,12 | |
≤ 0,06 | ≤ 0,12 | |||||
± 1% or ± 2 mm whichever is the greater | (+ 2% ,0)or (+ 4 mm,0) | whichever is the greater | ± 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 | ||||||
Length L | Tolerance on exact length |
L ≤ 6000 | 10 |
0 | |
6000 < L ≤ 12 000 | 15 |
0 | |
L > 12 000 | + by agreement |
0 |
The outstanding characteristics of P265GH seamless steel pipe make it irreplaceable in the field of high temperature and pressure.
Excellent high-temperature stability, with stable mechanical properties and no obvious aging embrittlement when used for a long time at 400-500 ℃;
Good welding performance, reliable welding joints can be obtained using conventional welding processes, and no complex heat treatment is required after welding;
Excellent processing performance, capable of various cold processing such as cutting, bending, drilling, etc., to meet the manufacturing needs of complex structures;
High cost-effectiveness, lower cost compared to alloy steel pipes, suitable for large-scale engineering applications.
Electric Power Industry: widely used in superheater tubes, reheater tubes, water-cooled wall tubes and other parts of power plant boilers, capable of withstanding high temperature and high pressure steam media, ensuring the stable operation of power generation equipment.
Chemical Industry: used for transporting various corrosive, flammable and explosive chemical media, such as crude oil pipelines in petrochemicals and pipelines in refining units. Its good corrosion resistance and high strength ensure the safety and stability of chemical production.
Mechanical Manufacturing: In some mechanical equipment that requires high precision and performance of pipelines, as pipelines for hydraulic and pneumatic systems, EN10216-2 standard seamless pipes can provide stable medium transmission and ensure the normal operation of the equipment.
In the field of energy, P265GH seamless steel pipe plays an important role in energy transmission pipelines such as natural gas and oil, and its reliable performance ensures the safe and efficient transmission of energy.
