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China Dual Phase Steel Flange Manufacturer, Supplier, Factory

We believe that prolonged time period partnership is really a result of top of the range, benefit added provider, prosperous knowledge and personal contact for Dual Phase Steel Flange, Flange, Alloy Flange, Carbon Steel Flange, Industrial Pipe Fittings, we could solve our customer problems asap and do the profit for our customer. For those who need superior provider and excellent , pls choose us , thanks !
Dual Phase Steel Flange, With many years good service and development, we've a professional international trade sales team. Our products have exported to North America, Europe, Japan, Korea, Australia, New Zealand, Russia and other countries. Looking forward to build up a good and long term cooperation with you in coming future!

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  • Butt Welding 180 Degrees LR Return

    Butt Welding 180 Degrees LR Return

    SN Valve is a leading China butt welding 180 degrees lr return manufacturer. Butt welding 180 degrees lr return elbows are connected to the pipeline by welding and have a 180-degree bending angle and a long bending radius, hence the name long radius (LR) return elbow. The design of this elbow allows for smoother fluid flow through the pipeline, reducing flow resistance and pressure loss, while providing more space to accommodate piping layout and installation.

    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

  • Flat Face Flange

    Flat Face Flange

    Flat Face Flange is a type of flange in which the sealing surface and the overall end face of the flange are in the same plane. Its design feature is that the sealing contact surface is flat, without protrusions or depressions, suitable for sealing scenarios that require large areas of uniform contact.
    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 Welding Cross

    Socket Welding Cross

    A socket welding cross is a fitting with four openings, three of which are connected to the main pipe and one of which serves as a connection for a branch pipe. Its structure is characterised by the fact that at least one of the openings is designed as a socket port, which can be inserted into the pipe and connected by welding. Socket weld cross is usually made of high quality carbon steel, alloy steel or stainless steel to ensure its high strength and good sealing performance.

    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

  • Porous Plate Flange

    Porous Plate Flange

    SN Valve is a leading China porous plate flange manufacturer. Porous filter plate flange, i.e. a component that combines a porous filter plate with a flange. This kind of component is usually used in occasions where filtration and connection are required, such as filtration devices in piping systems, separation equipment for liquids or gases, and so on. The porous filter plate flange is connected to other pipelines or equipment through flange connection, and at the same time, the filtration function of the porous filter plate is utilized to realize the filtration and separation of liquids, gases or solid particles.

    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

  • Stainless Steel 180° Industry Elbow

    Stainless Steel 180° Industry Elbow

    SN Valve is a leading China stainless steel 180° industry elbow manufacturer.
    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

  • Blind Flange

    Blind Flange

    As the professional manufacturer, we would like to provide you shuangneng Blind Flange.And we will offer you the best after-sale service and timely delivery.A blind flange is a type of flange without a hole in the center, which is designed to seal off the end of a pipeline or used to remove debris from a pipeline during maintenance. The Flange usually made of high quality steel, such as carbon steel, alloy steel or stainless steel, to meet the needs of different 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

  • Related Blog
  • Reviews

  • The Manufacturing Process of Stainless Steel Flanges: Precision Engineering for Industrial Reliability

    Wenzhou Shuangneng Valve Co., Ltd., a trusted stainless steel flange and pipe fittings manufacturer in China, meticulously crafts industrial-grade flanges through a 7-step ASME-certified process. Combining advanced CNC machining, precision heat treatment, and rigorous NDT testing, their flanges ensure leak-proof performance in extreme environments like oil refineries and desalination plants.

  • How Can Blind FLANGE Ensure Pipeline Safety and Easy Maintenance?

    Blind flanges are critical components in modern piping systems, widely used to seal the ends of pipelines, valves, and pressure vessel openings. This article provides a comprehensive guide to understanding blind flanges, their structure, applications, advantages, and maintenance practices. It is designed to help engineers, procurement managers, and maintenance teams make informed decisions, reduce operational risks, and improve system reliability in industrial environments.

  • What Is a Plate Flange?

    ​In industrial piping systems, structural connections, and pressure equipment, few components are as critical—and as misunderstood—as the plate flange. Whether you are designing a new pipeline, upgrading an existing system, or sourcing components for heavy-duty industrial use, understanding plate flanges can directly impact safety, performance, and long-term cost efficiency.

  • What is a Tube Sheet and Why is It Essential in Heat Exchangers and Other Industrial Applications?

    A Tube Sheet is a critical component used in heat exchangers, pressure vessels, and other industrial systems. It is a flat plate that features a series of holes or perforations designed to accommodate tubes or pipes. The tubes are inserted into these holes, and the Tube Sheet serves as a structural support, ensuring that the tubes remain securely in place while allowing for fluid or heat transfer between the different sections of the system. Tube Sheets are typically made from materials such as stainless steel or other corrosion-resistant alloys due to their durability and resistance to harsh operating conditions.

  • Do you know why the gasket on both sides of the tube sheet must be made of the same material?

    The tube sheet is on both sides of flange fastening bolts, they are the same bolts, and the pressure on the gasket on both sides of the tube sheet is the same, and they are under force at same time.

  • Threaded Pipe Flange Specificaitons

    A threaded flange is a type of pipe flange with internal threads on its bore, allowing it to be screwed onto a pipe with corresponding external threads, eliminating the need for welding for connection.

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