| Standard: | ANSI, DIN, GB, JIS, GOST, BSW |
|---|---|
| Type: | Welding Flange |
| Material: | Carbon Steel |
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| Function | It is mainly used to close the open end of the pipeline system, prevent the fluid from flowing in the pipeline, and at the same time ensure the tightness and safety of the pipeline system. During the installation, maintenance and repair of the pipeline, it can conveniently cut off the connection between the pipeline and other equipment or pipelines, providing safety guarantees for related operations. |
| Structural Features | It looks similar to a flange. Usually, it is in the shape of a circular flat plate and has the same bolt hole distribution and connection dimensions as the corresponding flange, so that it can be connected to the flange on the pipeline through bolts. There is no through hole in its central part, and it is a solid flat plate, which realizes the blocking function. |
| Material | Similar to flanges, there are various materials available for selection. Commonly used ones include carbon steel, such as A3, Q235, etc., which have good strength and economy and are suitable for general industrial pipeline systems; stainless steel materials, such as 304, 316, etc., have good corrosion resistance and are often used in industries with high requirements for corrosion resistance, such as the chemical, food and pharmaceutical industries; alloy steel materials have higher strength and special properties and can be used in harsh working conditions such as high temperature and high pressure. |
| Specification and Size | There are various specifications and sizes. Its dimensions such as outer diameter, inner diameter and thickness need to be determined according to the dimensions of the connected flanges and pipelines. For example, common specifications include an outer diameter of 2200mm, an inner diameter of 2000mm, a thickness of 40mm, etc., to adapt to pipeline systems with various different diameters and pressure ratings. |
| Pressure Rating | Common pressure ratings are 0.25MPa, 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa, etc. The selection of the pressure rating should be determined according to the working pressure of the pipeline system to ensure that the blind flange can withstand the corresponding pressure during use and guarantee the safe operation of the system. For blind flanges with different pressure ratings, their thickness, the number and diameter of bolt holes may vary. |
| Connection Method | It usually matches the type of the connected flange, and there are mainly two connection methods: welding and bolt connection. Welding connection, especially butt welding connection, has high connection strength and good sealing performance, and is suitable for working conditions with high temperature, high pressure and high requirements for sealing performance; the bolt connection method is convenient for installation and disassembly and is often used in some pipeline systems that require frequent inspection or maintenance. The blind flange is tightly connected to the flange on the pipeline through bolts to achieve sealing and blocking |
| Sealing Surface Form | There are various forms such as flat face (FF), raised face (RF), male and female face (MFM), tongue and groove face (TG), etc. The flat face sealing surface is suitable for occasions with low pressure and relatively clean media; the male and female face and tongue and groove face have better sealing performance and can provide a more reliable sealing effect, and are suitable for pipeline systems with high-pressure, toxic, flammable and explosive media, which can effectively prevent the leakage of media. |
| Implementation Standard | Different industries and projects will select corresponding implementation standards according to specific requirements, such as the GB/T 9123-2010 standard for steel pipe blind flanges, the ASME B16.5 standard for American standard pipe flanges and blind flanges, the DIN 2527 standard for German standard blind flanges, etc. These standards make detailed regulations on the dimensions, tolerances, materials, performance, etc. of the blind flanges to ensure the quality, dimensional accuracy and interchangeability of the blind flanges and ensure their reliable use in different pipeline systems. |
| Application Field | It is widely used in the pipeline systems of many fields such as petroleum, chemical industry, electric power, metallurgy, water treatment, and municipal engineering. In the petrochemical industry, it is used for cutting off and blocking pipelines to ensure the safety and stability of the production process; in the power industry, it can be used for the inspection and maintenance of pipeline systems such as steam and water; in municipal engineering, it is often used for the end blocking of water supply and drainage pipelines or the isolation of branch pipelines, etc. |
Dingxiang Jinyu Forging Co., Ltd. is located in Dashagou Village, jiangcun Township, Dingxiang County, Xinzhou,known as the "hometown of Chinese forging", with a registered capital of 5 milion yuan. Superior geographical location, 100 kilometers away from the provincial capital Taiyuan, with convenient and fast road and railway transportation. Rich in coal, electricity, and iron resources, we are a professional manufacturer of forged fanges and pressure vessel forgings; We have the ability to integrate design, raw material procurement, cutting, forging, heat treatment, machining, mechanical testing, non-destructive testing, mechanical typing, painting, packaging, and shipping operations. The annual production capacity is over 10000 tons, with specifications ranging from DN15 to DN6000mm. The maximum weight per unit of finished products is 20 tons, and the pressure ranges from 150-2500 pounds, including national standards, American standards, British standards, German standards, Japanese standards,and non-standard fanges and forgings.Q1: Can l obtain samples?
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