Carbon Steel Threaded flange (THRF, THFF, THRTJ)

Threaded flange is a kind of non-welding flange, the inner hole of the flange is processed into pipe threads, which are matched with the threaded pipe to realize the connection. Compared with slip on flanges or butt welding flanges, threaded flanges are characterized by easy installation and maintenance, and can be used in some pipelines where welding is not allowed. Alloy steel flange has enough strength, but not easy to weld, or welding performance is not good, can also choose threaded flange. However, when the temperature of the pipeline changes quickly or the temperature is higher than 260℃ and lower than -45℃, it is recommended not to use threaded flanges to avoid leakage.

Product Details

Size: 1/2″ (15 NB) to 100″ (2500NB)


Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64, etc.

Type: Threaded flange, weld neck flange, blind flange, slip on flange, lap joint flange, socket weld flange.

Applications: Chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding, etc.

Other Descriptions

Threaded flanges are not high-pressure flanges and are suitable for low-pressure, such as engineering and construction, air-conditioning water systems, etc., and can be used safely. Threaded flanges are a kind of threaded products that people often talk about. For example, the pipe fittings on household tap water are threaded. They are common in engineering and construction, with the advantages of easy on-site installation, easy maintenance, no welding and so on. They can be used on pipes that do not allow welding, are not easy to weld, or have poor welding performance. Threaded flanges are not high pressure flanges. Standard threaded flanges are necked flanges. Except for the flange, all other dimensions are flat welding flanges with neck, which are the same as socket welding flanges. One end of threaded flanges is connected with pipe threads, and the other end is connected with other flanges, flange covers, equipment, valves and so on.
Threaded flange is a kind of non-welding flange, which is to process the inner hole of the flange into pipe thread and connect with the threaded pipe. Considering the structural characteristics of threaded flange, it is not suitable for flammable and explosive hazardous occasions. The applicable pressure of threaded flange is 0.6-4.0Mpa, and the diameter is DN10-DN150.