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China LWN Flange Manufacturer, Supplier, Factory

Our growth depends within the innovative equipment, fantastic talents and repeatedly strengthened technology forces for LWN Flange, Our experienced specialized workforce will probably be wholeheartedly at your provider. We sincerely welcome you to check out our web-site and organization and mail us your inquiry.
LWN Flange, Customer's satisfaction is always our quest, creating value for customers is always our duty, a long term mutual-beneficial business relationship is what we're doing for. We have been an absolutely reliable partner for you personally in China. Of course, other services, like consulting, can be offered too.

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Hot Products

  • Lap Joint Stub Ends

    Lap Joint Stub Ends

    SN Valve is a leading China lap joint stub ends manufacturer. Lap Joint Stub Ends are short pipe joints with a flanged construction, designed to be butt-welded to the pipe at one end and designed to be used with loose flanges as the connecting surface at the other end. This design allows Lap Joint Stub Ends to make flexible and reliable connections in pipework.

    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

  • Loose Flange

    Loose Flange

    Loose flange is a type of flange connection that is characterized by a certain degree of mobility or removability of the connection between the flange and the pipe or equipment. This type of connection allows the flange to be easily Loose flange is widely used in a variety of industrial fields, especially in situations that require frequent disassembly and replacement of equipment. It allows the pipeline or equipment to be moved and adjusted to a certain extent without being restricted by the flange, thus improving the flexibility and adaptability of the 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

  • 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

  • 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

  • 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.

  • The Advantages of Duplex Steel Flanges: Why They Outperform Standard Stainless Steel Flanges

    Wenzhou Shuangneng Valve Co., Ltd. specializes in manufacturing corrosion-resistant stainless steel, duplex steel, and specialty alloy flanges, pipe fittings, and custom components for 20+ years. Compliant with ASME, DIN, JIS, and GB standards, we offer OEM solutions with MOQ 1 unit. Ideal for harsh environments in oil/gas, chemical, and marine industries.

  • Stainless steel pipe fittings production process 1: Hot rolling and cold drawing processes

    The production process of stainless steel pipe fittings is complex and precise, and ensuring that each process meets high-quality standards is key. The following is the hot rolling and cold drawing production process of stainless steel pipe fittings.

  • What are the advantages of Copper Alloy Tube Sheet?

    Copper Alloy Tube Sheet plays a crucial role in industrial production and equipment manufacturing due to its outstanding advantages such as strong rigidity, excellent thermal conductivity, wide application, and the impact of machining accuracy on equipment performance.

  • Why is the Demand for Plate FLANGE Soaring in High-End Manufacturing?

    In recent years, high-end manufacturing sectors—including aerospace, energy, and precision machinery—have seen a significant surge in demand for Plate FLANGE components. This trend is driven by the critical need for reliability, durability, and performance under extreme conditions.

  • 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.

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