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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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  • Threaded Flange

    Threaded Flange

    Threaded flanges are flanges with internal or external threads that are connected by screwing the threads on the flange to the threads on the pipe or equipment against each other. This type of flange is usually used in low-pressure and low-temperature operating environments because of its relatively low connection strength, but easy installation and removal.

    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

  • 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

  • RTJ Male Figure-8 Blank

    RTJ Male Figure-8 Blank

    Find a huge selection of rtj male figure-8 blank from China at SN Valve. RTJ Male Figure-8 Blank is a piping accessory with a special shape and structure, which resembles the cross-section of the figure ‘8’ and has a convex design of the ring connection surface. The blind consists of two flat plates parallel to each other and an intermediate section connecting them to form an ‘8’. The convex design is used to mate with the ring joint flange to achieve a tight seal.

    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 45 Degrees Elbow

    Socket Welding 45 Degrees Elbow

    Socket welding 45 degrees elbow is mainly used to change the direction of transmission of fluid in a piping system by turning it at an angle of 45 degrees. It is designed with a socket at one end and an outer diameter matching the pipeline at the other end, making it easy to insert into the main pipeline for welding. This elbow is usually used in small diameter, high pressure piping systems, such as petroleum, chemical, electric power and other industries in the pressure piping system, to ensure that the fluid in the transmission process is smooth and safe.

    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

  • 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

  • Stainless Steel vs Carbon Steel Flanges – Revealing Long-Term Cost Savings

    In 2023, Saudi Aramco’s Jazan refinery replaced 1,200 carbon steel flanges with 316L stainless steel, cutting maintenance costs by 55% over 18 months. Coastal humidity caused rapid carbon steel corrosion, while 316L’s chloride resistance extended service life from 3 to 15+ years.

  • How much do you know about tube sheets?

    In the complex systems of heat exchangers, boilers, and filtration systems, tube sheets are essential components that determine efficiency, safety, and service life. Often described as the backbone of these systems, tube sheets are precision-engineered sheets, typically round in shape, drilled with precisely aligned holes that support, separate, and seal the tubes. As a leading manufacturer in China, SN Valve specializes in advanced engineering and produces high-quality tube sheets that meet the most stringent industry standards.

  • The origin of ship flanges and ship flat welding flanges

    The origin of the product name 'marine flange' is closely related to its intended use.

  • 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.

  • Why Is Socket Weld FLANGE Essential for High-Pressure Piping Systems?

    In industrial piping systems where reliability and pressure resistance are critical, choosing the correct flange type directly affects system safety and operational efficiency. Among the many flange types available, the Socket Weld FLANGE is widely recognized for its strong structural performance in small-diameter, high-pressure pipelines.

  • 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.

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