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China Carbon Steel Flange Manufacturer, Supplier, Factory

Every single member from our large efficiency profits team values customers' requirements and organization communication for Carbon Steel Flange, Flange, Alloy Flange, Dual Phase Steel Flange, Industrial Pipe Fittings, In case you have any comments about our company or products and solutions, make sure you feel free of charge to speak to us, your coming mail might be highly appreciated.
Carbon Steel Flange, We've exported our solutions all over the world, especially the USA and European countries. Furthermore, all of our merchandise are manufactured with advanced equipment and strict QC procedures to ensure high quality.If you are interested in any of our products and solutions, please don't hesitate to contact us. We are going to try our best to meet your needs.

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  • Paddle Blank and Spacer

    Paddle Blank and Spacer

    SN Valve is reputed Paddle Blank and Spacer Manufacturers in CHINA, Our offered Spade and Spacers are normally referred to as Line Blinds, has the similar function as a Spectacle Blind . The Spade or Spacer is fitted in the line between two flanges and is bolted in place. The Spade Ring Spacer is used when the line is required open and the Paddle Blind or Spade is installed when the line is required blocked or closed. To change it from open to closed, only half the bolts need to be removed and the Paddle Spacer is swapped over. The removed bolts are then installed and tightened. The handle from the pipe and provides an indicator of a Spade or Ring Spacer is installed.

    SIZE:
    DN10(3/8") DN15(1/2") DN20(3/4") DN25(1") DN40(1-1/2")
    DN50(2") DN80(3") DN100(4") DN125(5") DN150(6")
    DN200(8") DN250(10") DN300(12") DN350(14") DN400(16")
    DN450(18") DN500(20") DN550(22") DN600(24")
    Customized Size Consult Us

  • Socket Welded Flange

    Socket Welded Flange

    As the professional manufacturer, SN Valve would like to provide you high quality socket welded flange. Socket weld flange is a flange in which the end of the pipe is inserted into the step of the flange ring and welded at the end and outside of the pipe. It usually consists of flange body, bolt holes, sealing surface and other parts, and its structural form has two kinds of necked and non-necked. Necked socket weld flanges have good rigidity, small welding deformation and better sealing, so they are more common in practical applications.

    SIZE:
    DN10(3/8") DN15(1/2") DN20(3/4") DN25(1") DN40(1-1/2")
    DN50(2") DN80(3") DN100(4") DN125(5") DN150(6")
    DN200(8") DN250(10") DN300(12") DN350(14") DN400(16")
    DN450(18") DN500(20") DN550(22") DN600(24")
    Customized Size Consult Us

  • Welding Neck Flange

    Welding Neck Flange

    Chinese manufacturer SN Valve offers high-quality Welding Neck Flange. A butt-weld flange is a flange with a longer neck that usually matches the outer diameter of the pipe so that it can be welded to the pipe. This flange structural design improves the rigidity and strength of the flange, while improving the sealing performance of the connection. Butt-weld flanges are usually made of high-quality forged steel materials and can withstand high-pressure and high-temperature working environments.

    SIZE:
    DN10(3/8") DN15(1/2") DN20(3/4") DN25(1") DN40(1-1/2")
    DN50(2") DN80(3") DN100(4") DN125(5") DN150(6")
    DN200(8") DN250(10") DN300(12") DN350(14") DN400(16")
    DN450(18") DN500(20") DN550(22") DN600(24")
    Customized Size Consult Us

  • Threaded 45 Degrees Elbow

    Threaded 45 Degrees Elbow

    SN Valve is a leading China threaded 45 degrees elbow manufacturer. Threaded 45 degrees elbow bends the pipe in 45-degree direction by means of threaded connection, so as to realise the change of pipe direction. It is widely used in industrial fields such as petroleum, chemical, natural gas, water treatment and heating, as well as in building and civil piping system.

    SIZE:
    DN10(3/8") DN15(1/2") DN20(3/4") DN25(1") DN40(1-1/2")
    DN50(2") DN80(3") DN100(4") DN125(5") DN150(6")
    DN200(8") DN250(10") DN300(12") DN350(14") DN400(16")
    DN450(18") DN500(20") DN550(22") DN600(24")
    Customized Size Consult Us

  • Marine Flange

    Marine Flange

    High quality marine flange is offered by China manufacturer SN Valve. Marine flange is a standardized connecting part, which is usually used in piping system on ships to achieve reliable connection between pipes and pipelines, pipelines and equipments. Marine flanges are mainly used in the transmission system of water, oil, gas and other fluids on ships to ensure the unobstructed flow of fluids. At the same time, the maintenance and replacement of pipelines will be easier, improving the reliability and safety of ships.

    SIZE:
    DN10(3/8") DN15(1/2") DN20(3/4") DN25(1") DN40(1-1/2")
    DN50(2") DN80(3") DN100(4") DN125(5") DN150(6")
    DN200(8") DN250(10") DN300(12") DN350(14") DN400(16")
    DN450(18") DN500(20") DN550(22") DN600(24")
    Customized Size Consult Us

  • Bellows Flange

    Bellows Flange

    Bellows Flange is mainly used to connect bellows with other components such as pipes, equipment or valves. It connects the bellows with the flange through bolts or other fastening devices to form a reliable connection system. Bellows flange plays the role of connection, support and sealing in the piping system, and can withstand certain pressure and displacement.

    SIZE:
    DN10(3/8") DN15(1/2") DN20(3/4") DN25(1") DN40(1-1/2")
    DN50(2") DN80(3") DN100(4") DN125(5") DN150(6")
    DN200(8") DN250(10") DN300(12") DN350(14") DN400(16")
    DN450(18") DN500(20") DN550(22") DN600(24")
    Customized Size Consult Us

  • Preventing Chloride Stress Corrosion: Why 316L Stainless Steel Flanges Outperform Carbon Steel in Coastal Plants

    In 2023, Wenzhou Shuangneng Valve Co., Ltd. helped an Indonesian power plant replace carbon steel flanges with 316L stainless steel, reducing chloride-induced failures by 40% within 12 months. Coastal salt spray and humidity accelerated corrosion in carbon steel, while 316L’s molybdenum-rich alloy prevented stress cracking.

  • Material Characteristics of Stainless Steel Flange: A Comprehensive Guide

    Stainless steel flanges are essential components in piping systems, offering durability, corrosion resistance, and high strength. Understanding their material characteristics ensures optimal performance in various industrial applications. Below, we explore the key properties, specifications, and FAQs about stainless steel flanges.

  • Revolutionizing Industrial Piping: The Stainless Steel Blind Flange Explained

    Discover the stainless steel blind flange, a vital component in industrial piping systems. Known for its corrosion resistance, high durability, and temperature tolerance, it is ideal for sealing pipelines in oil and gas, chemical processing, and marine applications. Learn how this innovative solution enhances safety, efficiency, and longevity in modern engineering. Visit our website for more details!

  • What is a Stainless Steel Flange and What is Its Purpose?

    A stainless steel flange is a mechanical component used to connect pipes, valves, pumps, and other equipment in a piping system. It provides a secure and leak-proof joint while allowing for easy assembly and disassembly. Flanges are widely used in industries such as oil and gas, chemical processing, water treatment, and power generation.

  • The Dangers of Low-Quality Flanges: A Warning from Stainless Steel Flange Manufacturers

    Wenzhou Shuangneng warns against low-quality flanges causing leaks, explosions, and costly downtime. As a certified stainless steel flange fittings manufacturer, we ensure ASME B16.5-compliant products with PMI testing, Ra≤3.2μm surfaces, and 25+ year lifespans.

  • Do you know the operation process of flange sight glasses?

    High-pressure vessel flange sight glasses and sandwich flange sight glasses are named high-pressure vessel flange sight glasses in the Ministry of Chemical Industry's standards. Due to the influence of construction technology, this construction method will embed two flat flanges and clamp a layer of glass. This design is often called a flat flange sight glass; because its laminated glass is fixed by a flange, it is also called a sandwich flange sight glass.

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