Can square tubes be used for process pipelines?
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In systems with lower pressure and higher flow rates, larger-diameter pipes are used, such as 1600, 1800, 2000, 2200, 2400, etc. Due to the large diameter, it is usually difficult to align them during installation, especially when it comes to manufacturing elbows. Can square tubes be used in place of round tubes? This would not only facilitate installation but also improve the arrangement of other pipes on the pipe rack.
Square tube is a type of steel pipe with a hollow square cross-section, also known as steel bent profile. It is a steel section with a square cross-section, manufactured by using hot-rolled or cold-rolled strip steel or coil steel as raw material, undergoing cold bending processing followed by high-frequency welding. They are widely used as pipes for transporting fluids. It is mainly used for liquid transportation, hydraulic supports, mechanical structures, and medium-low pressure applications. High-pressure boiler tubes, heat exchange tubes, used in industries such as gas and petroleum. However, for the same conveying capacity, square tubes have a larger diameter than circular tubes, require more material, and thus have higher costs compared to circular tubes.
Square tubes experience the greatest stress; for pipes under the same pressure, a greater wall thickness is required. Square tubes are generally not recommended for use in pressure pipelines; they are only used in non-pressure pipelines and for structural purposes
1. For the same flow rate, square tubes have a larger diameter than circular tubes, which results in higher costs. 2. The stress distribution in square tubes is uneven; for pipes under the same pressure, a greater wall thickness and more robust material are required. 3. There are no relevant standards for molds used in their production, and if welding is employed, there are too many welds, leading to poor pressure resistance. Generally speaking, round tubes are superior to square tubes in every aspect; they can only be used under very low pressures
Square tubes can be used for the air fan inlet.
Square tubes are generally not recommended for use in pressure pipelines; they are only used in non-pressure pipelines and for structural purposes; P
When the pressure is low, it can indeed be used despite the difficulties in piping
When calculated, square tubes aren’t that good~~:handshake
Process pipelines are not suitable; they have a small cross-sectional area per unit length, which is uneconomical, and the pressure distribution within them is uneven