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Who we are
Welcome to Wenzhou F&D flange limited company

Wenzhou F&D flange limited company was established in 2004 and is a professional stainless steel flange manufacturer. It is located in the national development zone - Wenzhou Binhai Industrial Park, near the East China Sea, adjacent to Longwan International Airport. Besides, there is Yongqiang road connected upward, and Yongtaiwen Expressway connected downward, which gives us great convenience of transportation. The historical background of Wenzhou, the spring breeze of reform, the opening up, and the unique hydrological climate have made us occupy the “Good timing, geographical convenience and harmonious human relation”.
Rome was not built in a day. More than ten years of business development, more than ten years of experience, have developed the deep company background of F&D Adhering to the "quality as the root, reputation-based" business philosophy, the F&D has established a good corporate image of commitment...
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2004
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Ten years of experience
F&D flange Product

Welding Neck Flange or Welded Flange or Butt Weld Flange(WN)
This flange type is used, normally, in high-pressure and high/low temperatures applications that require an unrestricted flow of the fluid conveyed by the piping system (the bore of the flange matches with the bore of the pipe).
The absence of pressure drops prevents negative effects as turbulence and erosion/corrosion of the metals in the proximity of the flanged joints.
The tapered hub allows a smooth distribution of the mechanical stress between the pipe and the weld neck flange and facilitates the execution of radiographic inspections to detect possible leakages and welding defects.
The dimension of the flange (NPS and the pipe schedule) shall match the dimension of the connecting pipe.
A welding neck flange is connected to a pipe by a single full penetration V-shaped butt weld.

Threaded Flange or Screwed Flange
Threaded flanges are available in sizes up to 4 inches and multiple pressure ratings, however, they are used, mostly, small size piping in low pressure and low-temperature applications, like water and air utility services.
Threaded flanges are also a mandatory requirement in explosive areas, such as gas stations and plants, as the execution of welded connections in such environments would be dangerous.

Slip-on Flange or Flat Welding Flange(SO)
The bore size of a slip-on flange is larger than the outside diameter of the connecting pipe, as the pipe has to slide inside the flange to be connected by the execution of a fillet weld.
Slip-on flanges are also defined “Hubbed Flanges” and they are easy to recognize due to their slim and compact shape.

Slip-on Flange or Flat Welding Flange(SO)
The bore size of a slip-on flange is larger than the outside diameter of the connecting pipe, as the pipe has to slide inside the flange to be connected by the execution of a fillet weld.
Slip-on flanges are also defined “Hubbed Flanges” and they are easy to recognize due to their slim and compact shape.

Long Weld Neck Flange
Long weld neck flanges are generally used on vessels, columns or barrels. These flange types are available also in the heavy barrel (HB) and equal barrel (E) types.

Lap Joint Flange or Loose Flange

Blind Flange(BL)

Lap Joint Flange or Loose Flange
Quality Field
Adhering to the "quality as the root, reputation-based" business philosophy

News Center
Adhering to the "quality as the root, reputation-based" business philosophy

Congratulations!We got the certificate of CE and ISO9001

Polishing Method of Dual Phase Steel Flange

F&D flange quality as the root
If you want to make the connection with us, either have any suggestions or proposes to our company, Please call us. Your problem will be solved more effectively.
Hotline:0086-577-86891567
Contact F&D Flange

Contact person:Sally



chenchaoqunsunsheng

No.27 Gangqiang Road,Konggang Economic Zone,Yongxing Street,Longwan District,Wenzhou,China
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