Coiled tubes are tubular devices formed by spirally bending a cylindrical surface, with their core function being fluid heat exchange or energy transfer. Their production process achieves stable forming through the coordinated action of guide rollers and adjusting rollers, enabling precise control of parameters such as pitch and diameter. The resulting spiral tubes offer advantages such as ellipticity approaching zero and minimal wall damage.
In industrial applications, it primarily serves as the core component of a spiral tube-wrapped heat exchanger, enhancing heat transfer efficiency through turbulent flow, with a heat transfer coefficient up to 3-7 times that of traditional equipment.
The spiral tube winding structure uses reverse winding to form a spiral tube bundle, extending the tube length by 6-8 times. The stress-self-eliminating structure enhances pressure resistance by 40%. Salt bath-type waste heat recovery units are equipped with spiral coils of 25 mm outer diameter and 3 mm wall thickness, arranged in a ring-shaped space with a 16-point temperature measurement system, capable of withstanding 750°C flue gas impact.
Product Description
Coiled tubing is a tubular device formed by spirally bending a cylindrical surface, primarily used as a component for fluid heat exchange or energy transfer. In industrial applications, they primarily serve as the core components of spiral-wound heat exchangers. Utilizing advanced cold-drawing technology from South Korea and Japan, the dimensional tolerances of the steel tubes are controlled with greater precision. Additionally, an advanced bright annealing gas-protected process ensures that the steel tube surfaces do not come into contact with oxygen, preventing the formation of oxide scale. This results in cleaner, brighter, and smoother tube surfaces.
Product advantages
No need to connect fittings, saving installation procedures, greatly reducing installation time and lowering installation costs. At the same time, the use of coils can reduce the risk of leakage from pipe fittings and improve the performance of the piping system.
Application
Widely used in the manufacture of various containers, furnace shells, furnace plates, bridges, and automotive structural steel plates, low-alloy steel plates, bridge steel plates, shipbuilding steel plates, boiler steel plates, pressure vessel steel plates, patterned steel plates, and automotive chassis steel plates. Certain parts of tractors and welded components.
Standards
ASTM、ASME、EN、GB、JIS、DIN、GOST.etc
Grades
304、304L、316、316L、321H、316Ti、347、347H.etc
thickness
0.05-1.0mm
Width
10-650mm
