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Company:Wenzhou Topnotch Machine Co.,Ltd. 
Address:Dongyang Rd., Heyi Industrial Zone,Oubei Town, Yongjia County,Wenzhou,Zhejiang, China 325105
Contact Person: Mr. Kevin Tung
Tel: +86-577-67318591 67318935
MB: 86-18906638592


  • Stainless Steel Butt Welding Concentric And Eccentric Reducer
    Reducer is the component in a pipeline that reduces the pipe size from a larger to a smaller bore (inner diameter).
    Reducer can be used either as nozzle or as diffuse depending on the mach number of the flow.
    Reducer allows for a change in pipe size to meet hydraulic flow requirements of the system, or to adapt to existing piping of a different size.
    Reducers are usually concentric but eccentric reducers are used when required to maintain the same top or bottom of pipe level.
  • Stainless Steel Elbow
    Elbow is a pipe fitting installed between two lengths of pipe or tubing to allow a change of direction, usually 45°, 90° ,180°angle.The ends may be machined for butt welding, threaded (usually female), or socket, etc. When the two ends differ in size, the fitting is called a reducing elbow or reducer elbow.
  • Stainless Steel Tee
    Tee is also called triplet,three way and "T" pieces and it can be used to either combine or split a fluid flow. Most common are tees with the same inlet and outlet sizes, but 'reducing' tees are available as well. it means the one or two ends are different in dimension.Due to this dimension difference,cause the different capacity to control the volume when requried.
  • Stainless Steel Pipe Cap
    Pipe cap is usually used for protecting the end of pipe and other fittings,so the shape is designed according to the shape of pipe line. We also use caps to cut off the transition and the connection treat can be butt weld,socket weld and thread connection according to use requirements.
    TANA are Manufacturer, Exporter and Supplier of Pipe Cap. Pipe caps are widely well-known for the utmost output and outstanding results that it gives. Pipe Cap manufactured using superior grade raw materials. Pipe Cap are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.
  • Stainless Steel Lab Joint Stub End
    Stub Ends are fittings used in place of welded flanges where rotating back up flanges are desired. They are also called Lab Joints and Vanstone Flared Labs. A rotating back up flange seats itself against the back surface of the Stub End. When bolts are added, the clamping action of the bolts presses the rotating back up flange against the back of the Stub End. The gasket surface of the Stub End then presses against a gasket and another gasket surface providing joints like standard flange joints. The seal is made by the gasket surface of the stub end alone, the flange only provides the clamping pressure on the joint.
  • Reinforced Spiral Wound Gasket
    Reinforced Spiral Wound Gasket also known as graphite reinforced composites from high-strength flexible graphite gasket reinforced composite plate by precision cutting, with the packet can be processed into a side edge of outsourcing. With good sealing performance and operability, and low pre-pressure and non-stick used in the flange sealing surface, the installation of easy-to-use pads. To adapt to hot water, high temperature, high pressure steam, hydrogen, ammonia, solvents, hydrocarbons, such as ultra-low temperature liquid medium.
  • Spiral Wound Gasket with Inner And Outer Ring
    Spiral Wound Gasket with Inner And Outer Ring adopts high-quality SUS304 or SUS316 ("V" or "W"shape) metal strips, other alloy materials and some flexible materials like graphite, asbestos, PTE and non-asbestos, which are overlapped and wound spirally with each other. The metal strips are fixed on the initial and terminal ends by means of spot welding. Spiral Wound Gasket has the best resilien ce among the semi-metal hermetic gaskets. Its structural density can be made subject to different locking forces. Also the internal and external steel rings can be used to control its maximum compaction. It's not demanding for the surface precision of the flange sealing surface contacting the spirally-wound gasket. It's especially applicable for such occasions as uneven load, slack joint, periodical changes of temperature and pressure, impact or vibration. It's an ideal static seal element for flange connection in valves, pumps, heat exchangers, towers, manholes,handholes and so on.
  • PTFE Teflon Gasket
    PTFE Teflon Gasket has strong corrosion resistance and friction-resistance,By adding filler such as glass fiber,carbon fiber,copper powder,graphite,asbestos,MOS2,AL2O3,carbon powder,ceramic fiber,metal powder,polyamide,PS,the hardness,compression strength and abrasion resistance of the products is improved ,in addition,it will have good heat conductivity and low heat expansion coefficient.
  • Weld Neck WN Flange
    Weld Neck WN Flange are designed to be joined to a piping system by butt welding. This kind of flange include lots of specification, Weld neck Flange is expensive because of its long neck and cost of people for contact WN flange with pipeline or fitting, but is preferred for high stress applications. The necks, or hubs, transmits stresses to the pipeline. The gradual transition of thickness from the base of the hub to the wall thickness at the butt weld provides important reinforcement of the Weld Neck flange. The bore of Weld - Neck flange matches bore of the pipeline, reducing turbulence and erosion.
  • Slip on Flange
    Slip on Flange has a low hub because the pipe slips into the flange prior to welding.It is welded both inside and out to provide sufficient strength and prevent leakage.Slip-on flanges are all bored slightly larger than the O.D.of the matching pipe.They are preferred over welding neck flanges by many users due to their lower initial cost,but final installation cost is probably not much less than that of the welding neck flange because of the additional welding involved. We are a professional flange manufacturer and the standards we can produce is ANSI, DIN, BS and EN1092-1. Our brand is TANA and we do best for our products.
  • Blind Flange
    Blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles. This flange helps in easy access to a line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made. This reduction can be a threaded reduction or welded reduction.
  • Bellows Expansion Joints
    Bellows Expansion Joints are used in a wide variety of piping applications to compensate for thermal pipe expansion or contraction, and to absorb equipment vibration or pipe motions. These products provide piping system flexibility under extreme operating conditions.Bellows materials utilized include stainless steels, nickel based alloys, titanium, aluminum and many others for extreme pressure, temperature and corrosive conditions.
  • Single Sphere Rubber Expansion Joint
    Single Sphere Rubber Joints consists of rubber pipe ,made of inner glue ,multi-layer proofinf and cord fabric and outer glue abd metal woggle joint .It is applicable for the connection of inlet and outlet pipes of various fancoil sets of air conditionings in the guest rooms of hotels and restaurants.
  • Double sphere rubber expansion joint
    Double sphere rubber expansion joint consists of rubber pipe ,made of inner glue ,multi-layer proofinf and cord fabric and outer glue abd metal woggle joint .It is applicable for the connection of inlet and outlet pipes of various fancoil sets of air conditionings in the guest rooms of hotels and restaurants.
  • Flat Face Flange
    Flat faced flange is a flange that is machined flat and does not have a ridge like a raised face or ring type joint flange. The flat surface allows for the gasket to have full contact with the entire mating surface. The purpose of the flat face is to eliminate the bending moment put on the flange when the bolts are torqued. When using cast iron or fiberglass flanges, this bending moment can easily break the flange.In general, flat faced flanges are used in low pressure and temperature environments such as water treatment or pump suction flanges. Flat face flanges are usually common when the piping or piping components are brittle such as plastic, fiberglass or cast iron. However, it should be noted that these flanges come in all different types of materials, including steel.
  • Plain Flange
    Plain Flange (Plate flange) is also called flat flange, plate slip on flange or a ring flange. It looks like a flat circular disk with inner bore and bolt holes on it . It is one kind of the slip on flange.Plate flange means the flange is like a flat plate, it could be Raised Face (RF) sealing face , commonly the plate flange could be RF or FF face, the Raised Face Plain Flange is much popular in regular industry systems.In ANSI/ASME B16.5 flange standard , there is no plate slip on flange , only hub slip on flange in it , but in different projects the ANSI B16.5 plate flange is used a lot for decrease the cost of the projects. The ANSI /ASME B16.5 plain flange should have the same dimensions and PCDs with the Slip on flange, the only difference is without a hub on the flange.

Wenzhou Topnotch Machine Co.,Ltd is a professional leader China stainless steel expansion joint,rubber expansion joint,expansion bellows,bellows expansion joint,rubber expansion bellows,lab joint stub end,carbon steel single sphere rubber joints,stainless steel pipe reducer,FF flange,Long Radius Stainless steel  Elbow manufacturers and suppliers with high quality and low price.Welcome to contact us!


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Contact Us

​Company:Wenzhou Topnotch Machine Co.,Ltd. 

Address:Dongyang Rd., Heyi Industrial Zone,Oubei Town, Yongjia County,Wenzhou,Zhejiang, China 325105

Contact Person:
  Mr. Kevin Tung 

Tel: +86-577-67318591 67318935


MB: 86-18906638592

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