Factory direct sales Hot-expanded Seamless Pipe The Hot-expanded Seamless Pipe is being immersed in water. Measure the straightness of the Hot-expanded Seamless Pipe The product is loaded into lorries and ready for transportation. Product Introduction Introduction of The Hot-expanded Seamless Pipe: Thermal expansion pipe is a pipe product that uses special thermal expansion equipment to expand the diameter of the steel pipe after heating the seamless steel pipe, so that its outer diameter and wall thickness reach the required size.
Hot-expanded Seamless Pipe features：
- Flexible size: The outer diameter and wall thickness of the pipe can be wider through the thermal expansion process, and the special size of the pipe can be customised to meet the needs of different projects, and to meet some special application scenarios that cannot be met by conventional pipes.
- High strength and toughness: Through the thermal expansion process, the microstructure of the metal material is optimised, with higher strength and toughness, and can withstand greater pressure and external force.。
- Smooth inner and outer walls: The inner and outer surfaces of the thermal expansion tube are smooth, and the roughness can generally be controlled between Ra0.8-Ra1.6μm, which is conducive to reducing the resistance in the process of fluid transportation, improving the transportation efficiency and reducing energy consumption.
- Stable quality: A strict production process and quality control system ensure that the product has good uniformity of various performance indicators and can meet the high standard requirements of different industries.
The use of Hot-expanded Seamless Pipe: The hot-expanded seamless steel pipes produced by our company are mainly applied to the following fields：
- Petrochemical industry: all kinds of pipelines used for oil and natural gas, such as oil well pipes, oil and gas pipelines, chemical reactor pipelines, etc., can withstand the erosion of high temperature, high pressure and corrosive media.
- Electric power industry: in the fields of thermal power generation and nuclear power, it is used as boiler pipes, superheater tubes, condenser tubes, etc., to ensure the safe and stable operation of power equipment.
- Machinery manufacturing industry: It can be used to manufacture mechanical structural parts, such as hydraulic cylinder barrels, cylinder barrels, transmission shafts, etc., and use its characteristics of high strength and high precision to meet the performance requirements of mechanical components in the working process.
- Construction engineering industry: building drainage system, central air-conditioning pipeline, fire pipeline, etc., are widely used to provide reliable fluid transmission channels for building facilities and ensure the normal use of buildings.
Specifications and Standards
| Specification | Details |
| Outer Diameter Range | 325~1220mm |
| Wall Thickness Range | 7~60mm |
| Length Range | Customised lengths according to customer requirements. |
| Material Grades | 20, 16Mn, Q345B/C/D/E, 20G, 12Cr1MoVG15CrMoG, 35CrMo, 42CrMo and other alloy materials |
| Standards | GB/T 8163、GB/T 3087、GB/T 5310、SY/T 5037、API SPEC 5L |
Our advantages：
- Diversified and all-round production system ：We have built a diversified production system, covering advanced production lines such as hot expansion, hot rolling, cold rolling, cold drawing, centrifugal casting, CNC machine tools, etc. Each production line is equipped with cutting-edge equipment and mature technology, accurately controls the production process, and efficiently produces high-precision and high-quality products to meet the diverse needs of various industries.
- Direct supply from the source factory: As the source factory of centrifugal casting, we eliminate all intermediate links and directly deliver the products from the factory to the customer. Dramatically reduced product costs, allowing you to obtain high-quality centrifugal casting products at a low price, as well as more direct and rigorous control of the production process to ensure consistent product quality.
- Strict quality control system:We build a whole-process quality control system. Strict testing of raw materials when purchasing to ensure that the composition and performance meet the standards; Multi-channel inspection checkpoints are set up in production to monitor the dimensional accuracy, mechanical properties and surface quality of products in real time; The product is fully inspected before leaving the factory, so that you can use it without worry.
- Perfect after-sales: We will pay regular visits to help customers solve problems and continue to improve.
Country: Germany
Feedback: “I am very satisfied with the delivery time, I originally thought that the custom specifications would delay the time, but I didn’t expect you to ship the goods so quickly. The goods arrived in time, and our construction progress was not delayed at all, thank you!” Customer name: shipyard
Country: Japan
Feedback： Feedback: “The quality of the goods sent every time is very stable, the specifications are the same as our requirements, the price is fair, the cost performance is very high, we will continue to cooperate.” Customer industry: Construction engineering company
Country: Canada
Feedback： “The tube was used as soon as I received it, and the quality was very good, the wall thickness was uniform, and the surface was smooth and there were no blemishes. The people in our project department said that this batch of goods is good, and they will ask you to order it if there is a demand in the future.”
Customer industry: Machinery manufacturing company
Country: United Kingdom
Feedback: “This is our first time working with your company, and we are very satisfied with the product quality and service attitude. The dimensional accuracy of the seamless steel pipe is high, which fully meets the needs of our steel structure project. Looking forward to more cooperation opportunities in the future!”
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