Seamless Hot-Expanded Large Diameter Seamless Steel Pipes
Introduction
These seamless hot-expanded large diameter steel pipes are meticulously crafted using an advanced waste pipe finishing process. The diameter of these pipes is broadened through an innovative hot-expanding technique. Typically, when mentioning heat-expanded steel pipes, we are referring to these premium quality seamless steel pipes.
Classification
- By Use:
- Specially designed for high-temperature equipment, these heat-expanded steel pipes are engineered to withstand extreme heat conditions.
- Ideal for low-temperature applications, these heat-expanded steel pipes maintain integrity in colder environments.
- Perfect for pressure facilities, these heat-expanded steel pipes ensure safety and reliability under high pressure.
- Optimized for pipelines, these heat-expanded steel pipes offer superior durability for fluid transportation.
- Engineered for gas cylinders, these heat-expanded steel pipes provide robustness required for safe gas containment.
- Designed for structural applications, offering exceptional strength with heat-expanded steel pipes.
- These heat-expanded steel pipes are tailored for efficient fluid conveyance, ensuring smooth flow and reduced resistance.
- Mechanical roller applications benefit from these heat-expanded steel pipes, delivering performance and longevity.
- By Steel Pipe Material:
- Carbon steel thermal expansion tubes offer strength and flexibility for diverse applications.
- Low alloy thermal expansion tubes provide enhanced performance in demanding conditions.
- High alloy thermal expansion tubes are crafted for superior durability and long-lasting performance.
- Stainless steel thermal expansion tubes are ideal for corrosion resistance and pristine appearance.
- Titanium alloy steel thermal expansion tubes offer a unique combination of lightness and strength.
Characteristics
- Large Diameter and Thin Wall: Achieving a large diameter with a relatively thin wall, these pipes are expanded from smaller diameters via a sophisticated thermal expansion process.
- Stable Quality in Some Processes:
- The cross-rolling hot diameter expansion process ensures consistently high-quality pipe expansion. A hydraulically-positioned mandrel compensates for length changes in the rolling mill, enhancing the dimensional accuracy of the parent pipe without compromising surface quality.
- Varying Process - Specific Characteristics:
- Cross-rolling hot diameter expansion process:
- This process minimizes energy consumption due to small torsional deformation and elongation coefficients. Consistent angular velocity limits torsion and shear stress, keeping the cross-section and length stable with elongation close to 1.
- By controlling the advancing speed, which is typically slow due to large skew rolling mill angles, we enhance the stability of expansion and precision of joint thickness.
- This process involves significant production investment due to the large-scale equipment required, suitable for diameters of 425 - 762 mm.
- Drawing type thermal expansion process:
- Offers low production costs and exceptional flexibility. However, it results in lower outer diameter accuracy, rough steel pipe surfaces, poor groove quality, and wavy outer surfaces.
- Push-type thermal expansion process:
- Experience the marvel of advanced engineering! Our process begins with precisely targeted local heating using state-of-the-art intermediate frequency induction technology. The raw material pipe is then meticulously positioned at the head displacement spot within our sophisticated multi-circle heating furnace. Here, it is expertly guided by a hydraulic cylinder piston movement, gliding seamlessly through a conical inner mold mandrel securely affixed to a sturdy fixing frame at the tail. This ingenious method results in a flawless expansion of the diameter, setting a new standard in precision and efficiency.
Application Fields
- Oil, Water Vapor, and Fluid Pipelines: Our Premium Seamless Steel Pipes are the go-to choice for a diverse range of applications, proving indispensable in the transport of oil, water vapor, and both medium and low-pressure flammable or non-flammable fluids. Their versatility and reliability make them a crucial asset in numerous pipeline systems.
- Oil, Natural Gas, and Chemical Industries: Within these demanding sectors, our pipes are unmatched in their ability to facilitate the seamless transportation and processing of essential substances. Their robust construction and advanced design are tailored to meet the rigorous demands of the oil, natural gas, and chemical industries, ensuring optimal performance and safety.
- Power Industries: In the power sector, our pipes are engineered to withstand the extremes, serving flawlessly in both high and low-temperature pressure vessels and associated piping systems in power plants. They provide reliability and peace of mind, ensuring uninterrupted operations.
- Urban Construction and Other Structures: Our pipes are pivotal in supporting the infrastructure of modern urban landscapes, integrated into various structural applications for urban development and other building structures. They offer unparalleled strength and durability, ensuring lasting performance in the backbone of cities.
Audited Supplier 
){kind=link}