Threaded blind flange

Short Description:

Threaded Blind Flange Blind flanges are usually used to cover the ends of pipes. They are also used in similar valves and pressure vessel openings. Since they are usually located at the end of the system, these flanges are usually the most stressed flange types.

Product Detail

Product Tags


Product Name Threaded Blind Flange
Type Threaded Forged / Cast Flange
Material Carbon steel: A105, SS400; Stainless Steel: F304 F304L F316 F316L, etc.
Standard ANSI, JIS, DIN, BS4504, SABS1123, EN1092-1, UNI, AS2129, GOST-12820
Size 1/2-48 inch 
Pressure ANSI class 150, 300, 600, 1500,2500, DIN PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160
Packing Plywood/Wood Pallet or Case
Surface Treatment Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint, Hot dipped Galvanized.
Usage Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
Place of Origin China
Brand Name HXFL
Standard Forged Flange
Standard or Nonstandard Standard
Application Machinery
Certificate ISO9001:2008/PED/API
Surface Galvanized
Surface treatment Heat Treatment
Packing Plywoodwooden Pallets
Technics Forged Casting
Process Forging+machining+heating Treatment
Threaded blind flange3

A blind flange is a solid disk used to block off a pipeline or to create a stop. It is machined in the same manner as a regular flange with the mounting holes around the perimeter and the gasket sealing rings machined into the mating surface. The difference is that a blind flange has no opening to allow fluid to pass through. The blind flange can be inserted between two open flanges and used to block off the flow of liquid through a pipeline.

Molding process

Through the forging process, using mold forming, and then through machining to complete the product processing.

Production scope


Main material

Carbon steel: A105, SS400, SF440 RST37.2, S235JRG2, P250GH, C22.8

Stainless Steel: F304 F304L F316 F316L 316Ti, Copper etc.

Application condition

Widely used in petrochemical, coal chemical, refining, oil and gas transmission, marine environment, power, heating and other projects.

Product characteristics

● Type: Blind Flange.
● Standard:ANSI, JIS, DIN, BS4504, SABS1123, EN1092-1, UNI, AS2129, GOST-12820.
● Pressure:ANSI class 150, 300, 600, 1500, 2500, DIN PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160.
● Packing: No Fumigate or Fumigate Plywood/Wood Pallet or Case.
● Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint, Zinc, Hot dipped Galvanized.
Rich production technology, advanced equipment, high automation degree and high production precision, complete molding. As the designated supplier of major energy enterprise groups under the jurisdiction of SASAC, the company has won a number of national, and provincial reputation.

Detailed diagram

Threaded blind flange01
Threaded blind flange02
Threaded blind flange03

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