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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 45 Degrees Short Elbow

    Butt Welding 45 Degrees Short Elbow

    SN Valve is a leading China butt welding 45 degrees short elbow manufacturer. Butt welding 45 degrees short elbow is a pipeline connector manufactured through hot pressing, cold working, welding and other processes, with an angle of 45 degrees, the connection is butt-welding, i.e., the elbow is directly welded to the pipe.

    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

  • Rubber Flexible Joint Flange

    Rubber Flexible Joint Flange

    The rubber flexible joint flange is a part used to connect pipes and equipment together. It consists of two parts: a flexible rubber joint and a flange. Rubber flexible joints are usually made of rubber materials and have good elasticity and sealing properties. In addition, they can also absorb the vibration and displacement of the pipeline to protect the pipeline from damage. On the other hand, a flange is a metal part used to connect pipes or equipment, with one or more protruding edges (i.e., flange faces) for bolting with other flanges or parts.

    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

  • Soft Joint Flange

    Soft Joint Flange

    High quality soft joint flange is offered by China manufacturer SN Valve. Soft joint flange usually consists of a pair of flanges, a soft joint (e.g. made of rubber, plastic or other elastic materials) and a number of bolts and nuts. The soft joint sits between the two flanges and acts as a seal and cushion. This type of flange connection through the bolts and nuts to the two flanges closely clamped together, and use the elastic deformation of the soft joint to compensate for the piping system displacement, vibration and temperature changes and other factors caused by the stress.

    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 Coupling

    Socket Welding Coupling

    SN Valve is a leading China socket welding coupling manufacturer. Socket weld pipe hoop is a kind of pipe fitting that connects two pipes together by socket welding. Its structure is characterised by the design of a socket at one end, which can be inserted into the end of another pipe and welded to make the two close together. Socket welded pipe hoop is usually machined from round steel or ingot after die forging, with key dimensions such as socket hole diameter, socket hole wall thickness and socket hole depth.

    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

  • Figure-8 Blank

    Figure-8 Blank

    SN Valve is a leading China figure-8 blank manufacturer. The Figure-8 Blank is a specially shaped piping accessory that resembles the cross-section of the number ‘8’. It is mainly used in piping systems, especially in the need to isolate or cut off the pipeline medium occasions. Through the installation of 8-word blind plate, you can achieve effective isolation of the pipeline, so as to facilitate the overhaul, maintenance or replacement of other accessories in the pipeline.

    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 Cross

    Threaded Cross

    SN Valve is a leading China threaded cross manufacturer. Threaded tee is an important pipe fitting that connects four pipes together by means of a threaded connection to realise the diversion or merging of fluids. 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 systems for changing piping direction, branching piping or realising special connections.

    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

  • 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.

  • 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.

  • Innovative Stainless Steel Non-Standard Flanges Revolutionize Pipeline Engineering

    Stainless steel non-standard flanges are essential in pipeline engineering, offering durability and versatility for low/high-pressure systems. Their corrosion resistance and innovative design ensure reliable connections, despite leakage challenges. Discover more on our website.

  • 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.

  • 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 Makes the Long Weld Neck Flange the Preferred Choice for High-Pressure Vessel Nozzle Connections?

    High-pressure vessel nozzle connections demand a joining method that minimizes weld seams, reduces inspection complexity, and maintains structural integrity under cyclic loading. The long weld neck flange addresses these demands through an extended tapered hub that integrates directly with the vessel shell. This analysis examines the geometric rationale, material selection criteria, dimensional standards, and installation practices that position this component as a technically superior solution for critical service conditions.

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