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The specifications and wall thickness of seamless steel pipes vary depending on the application and requirements. The following are some examples of common specifications and wall thicknesses of seamless steel pipes, as introduced by the seamless steel pipe manufacturer:Specification: The specifications of Jiangsu seamless steel pipes are usually defined by their outer diameter (OD) and wall thickness (WT). For example, the specification of a seamless steel pipe may be "outer diameter 60mm, wall thickness 5mm", indicating that its outer diameter is 60mm and wall thickness is 5mm. Specifications are usually in millimeters (mm) or inches (inch).

Zhejianghigh-pressureboilertubemanufacturerQuoted market price

Extrusion or rolling: The blank tube is formed into the final shape of a seamless tube by gradually reducing the outer diameter and wall thickness through an extrusion or rolling machine. This step requires a high degree of control to ensure that the size and quality of the pipeline meet the specification requirements.Annealing: Annealing is an important heat treatment step that eliminates residual stress and improves the mechanical properties and toughness of pipelines by annealing them at high temperatures.

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Material consistency: The material consistency of precision steel pipes is usually high, reducing the risk of material variation.Widely used: Precision steel pipes are suitable for many fields, such as automotive manufacturing, aerospace, oil and gas extraction, chemical engineering, etc.Customizability: Manufacturers are usually able to provide various specifications and customization options to meet the needs of specific applications. Disadvantages:High production cost: Due to the highly precise manufacturing process, the production cost of precision steel pipes is usually higher.

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Cold drawing or cold rolling: The perforated tube blank is gradually reduced in outer diameter and wall thickness through a cold drawing or cold rolling machine to improve dimensional accuracy.Annealing: Annealing of pipelines at high temperatures to eliminate residual stress, improve mechanical properties, and enhance pipeline toughness.Pickling or pickling oil grinding: Conduct pickling treatment on pipelines to remove oxides, or perform pickling oil grinding to improve surface quality.Cold drawing or cold drawing: Use a cold drawing machine or cold drawing machine to stretch the pipeline, further reducing size and improving surface quality.

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Good high-temperature resistance: High pressure boiler tubes are exposed to high-temperature environments during operation, so they must have good high-temperature resistance. The material selection of high-pressure boiler tubes usually depends on the working temperature and medium. For systems with lower temperatures and moderate pressures, low alloy steel or carbon steel can be chosen; For high-temperature and high-pressure systems, it is necessary to choose high-temperature resistant steel or alloy steel. High pressure boiler tubes are usually subjected to processes such as heat treatment and annealing to ensure that they do not undergo brittle fracture at high temperatures.

Zhejianghigh-pressureboilertubemanufacturerQuoted market price

Wall thickness range: The wall thickness of seamless steel pipes can vary according to different applications and requirements. The wall thickness can be very thin or very thick to meet the strength and pressure resistance requirements of specific applications. Some common wall thickness ranges include: 1mm, 2mm, 3mm, 5mm, 10mm, etc., depending on the purpose of the pipeline.Tolerance: The specifications of seamless steel pipes usually include tolerances on outer diameter and wall thickness. Tolerance refers to the allowable range of dimensional deviations. For example, a pipeline with a specification of "outer diameter 60mm and wall thickness 5mm" may have tolerances that allow for variations in outer diameter and wall thickness within a certain range.