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What is a thin-walled steel pipe == common small-diameter thin-walled steel pipe specification table
Thin-walled steel tubes are defined as those with an outer diameter to wall thickness ratio greater than 20. These tubes are typically manufactured through cold drawing, which enhances their dimensional accuracy and surface finish. Carbon steel, low-alloy steel, and alloy steel thin-walled tubes are commonly used in general structures and mechanical components. Thin-walled fluid tubes are suitable for the transport of non-corrosive fluids, while stainless steel thin-walled tubes find application in chemical, petroleum, food processing, and industrial sectors where heat resistance and corrosion resistance are required. They are often used in heat exchangers, piping systems, and structural components.
Cold drawn seamless tubes come in various sizes and dimensions, such as:
- Cold drawn seamless tube 4×1
- Cold drawn seamless tube 5×1
- Cold drawn seamless tube 6×1–2
- Cold drawn seamless tube 48×2–2.5
- Cold drawn seamless tube 27×2.5–6
- Cold drawn seamless tube 8×1–2
- Cold drawn seamless tube 24×2.5–6
- Cold drawn seamless tube 48×3–6
- Cold drawn seamless tube 10×1–3
- Cold drawn seamless tube 25×1–2
- Cold drawn seamless tube 50×2–2.5
- Cold drawn seamless tube 12×1–2
- Cold drawn seamless tube 25×2.5–6
- Cold drawn seamless tube 50×3–6
- Cold drawn seamless tube 12×1–4
- Cold drawn seamless tube 26×1–2
- Cold drawn seamless tube 51×2–2.5
- Cold drawn seamless tube 14×1–2.5
- Cold drawn seamless tube 26×2.5–4
- Cold drawn seamless tube 51×3–6
- Cold drawn seamless tube 14×3–4
- Cold drawn seamless tube 28×1–2
- Cold drawn seamless tube 54×2–2.5
- Cold drawn seamless tube 16×1–2
- Cold drawn seamless tube 28×2.5–6
- Cold drawn seamless tube 54×3–6
- Cold drawn seamless tube 16×2.5–4
- Cold drawn seamless tube 31×1–2
- Cold drawn seamless tube 57×2–2.5
- Cold drawn seamless tube 17×1–2
- Cold drawn seamless tube 30×2.5–9
- Cold drawn seamless tube 57×3–6
- Cold drawn seamless tube 17×2.5–3
- Cold drawn seamless tube 32×1–2
- Cold drawn seamless tube 60×3–6
- Cold drawn seamless tube 18×1–2
- Cold drawn seamless tube 32×2.5–10
- Cold drawn seamless tube 63.5×3–6
- Cold drawn seamless tube 18×2.5–6
- Cold drawn seamless tube 34×1–2
- Cold drawn seamless tube 65×3–6
- Cold drawn seamless tube 19×1–2
- Cold drawn seamless tube 34×2.5–8
- Cold drawn seamless tube 68×3–6
- Cold drawn seamless tube 19×2.5–3
- Cold drawn seamless tube 38×1–2
- Cold drawn seamless tube 70×3–6
- Cold drawn seamless tube 20×1–2
- Cold drawn seamless tube 38×2.5–10
- Cold drawn seamless tube 76×4–16
- Cold drawn seamless tube 20×2.5–6
- Cold drawn seamless tube 40×2–2.5
- Cold drawn seamless tube 83×4–18
- Cold drawn seamless tube 21×1–2
- Cold drawn seamless tube 40×3–6
- Cold drawn seamless tube 89×4–25
- Cold drawn seamless tube 21×2.5–3
- Cold drawn seamless tube 42×2–2.5
- Cold drawn seamless tube 22×1–2
- Cold drawn seamless tube 42×3–6
- Cold drawn seamless tube 22×2.5–6
- Cold drawn seamless tube 45×3–10
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A searchlight is a device with a powerful light source and a concave mirror, mainly used for remote illumination and search. A searchlight concentrates the light in a very small solid Angle (generally less than 2 degrees) through a mirror or lens to obtain a large light intensity. Most of these devices are attached to tripods or mobile vehicles, and large searchlights even have dedicated vehicles, such as trucks. The history of searchlight can be traced back to the 19th century, with the development of technology, modern searchlight has high efficiency, intelligent control and other functions, widely used in military, navigation, search and rescue, construction and large sports venues and other fields.
The core advantages of searchlights are their powerful light source and precise optical system, usually using high-intensity discharge lamps (HID) such as xenon lamps or LED as light sources to achieve high brightness illumination over long distances. LED light sources are becoming the mainstream choice because of their energy saving, long life and low heating characteristics. The mechanical structure of the searchlight includes a robust stand and an adjustable rotating mechanism, ensuring stability and flexibility in a variety of environmental conditions. In addition, the modern searchlight is also equipped with an advanced control system, which supports manual and remote control operation to achieve precise control of the beam.
The searchlight is designed with durability in mind in extreme environments, using water -, dust -, corrosion - and earthquake-resistant materials and construction to ensure stable operation in harsh environments. The appearance design takes into account practicality and aesthetics to meet the aesthetic and functional requirements of different application scenarios. With the continuous progress of technology, the performance and intelligence level of searchlights will continue to improve to meet the changing market demand.