Carbon Steel Welded Flange

Carbon steel welding neck flanges are available in a wide range of sizes, depending on different specifications and standards.

① The bolt hole center circle diameter ranges from 50mm to 2130mm.

② Bolt hole diameters range from 11mm to 30mm.

③ Flange thickness can range from 12mm to 58mm.

④ There are two ranges for the outer diameter of the tube: A ranges from 17.2mm to 2032mm, and B ranges from 14mm to 2020mm.

⑤ The flange inner diameter also has two ranges: A ranges from 18mm to 2036mm, and B ranges from 15mm to 2024mm.

⑥ The theoretical weight of the flange, taking DN1800 as an example, can reach 234.6kg.

Carbon steel butt welding flange is a pipe fitting with a neck design and a round pipe transition part for butt welding with pipes. This flange is very common in pipeline engineering and is mainly used for pipe connection. A flange is installed on the pipe to be connected. Depending on the pressure, a threaded flange or a welded flange can be used. A sealing point is added between the two flanges, and then bolted to achieve the connection of the pipe.

The material of carbon steel butt welding flange is carbon steel. Flanges of this material can be further subdivided into forgings A105, Q235B, Q345B, 20# steel, etc. according to the different materials. At the same time, they can also be divided into flat welding flanges, plate flat welding flanges, plate butt welding flanges, etc.

The specifications and sizes of carbon steel butt welding flanges mainly depend on their application scenarios and the pressure level they need to withstand. The specifications and models of carbon steel flanges usually include DN10 to DN3000, which covers a variety of application requirements from small to large. The dimensions of the flange include the center circle diameter of the bolt hole, the bolt hole diameter, the flange thickness, the outer diameter of the pipe, the inner diameter of the flange, etc. The range of these parameters is quite wide, for example, the center circle diameter of the bolt hole can be from 50mm to 2130mm, the bolt hole diameter can be from 11mm to 30mm, the flange thickness can be from 12mm to 58mm, and the outer diameter of the pipe and the inner diameter of the flange also have corresponding ranges. The theoretical weight of the flange varies according to the size, ranging from 0.36kg to 234.6kg.

Selecting the right carbon steel butt welding flange is essential to ensure the safe operation of the system. Therefore, all relevant factors, including size, material, pressure level, etc., should be fully considered during the design and procurement process to ensure that the performance of the flange meets expectations.

Carbon steel butt welding flanges are mainly used to connect high-pressure pipes and valves, and are suitable for pipeline systems with large pressure or temperature fluctuations, especially under high temperature, high pressure and low temperature conditions. It is also commonly used to connect pipes and valves with PN greater than 2.5MPa, and is particularly suitable for pipelines that transport expensive flammable and explosive media. In addition, carbon steel butt welding flanges are also widely used in boilers, pressure vessels, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, food and other industries. These application scenarios require flanges to have corresponding rigidity and elasticity, not easy to deform, and good sealing to ensure the safe operation and efficient work of the system.

The models of carbon steel butt welding flanges include DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, etc. These models cover different application requirements from small to large, suitable for various pipeline connection scenarios. Butt welding flanges have a wide range of applications, including pipelines with large fluctuations in pressure or temperature, high-temperature, high-pressure and low-temperature pipelines, and are particularly suitable for conveying expensive, flammable and explosive media. In addition, the materials of butt welding flanges are diverse, including carbon steel, stainless steel, etc., which can meet the needs of different industries and applications.