Complementary Products » Steel Flanges

Steel flanges are used for joining and strengthening the network of pipes in a house, office, hotel, or any other structure. They are also extensively used in underground and overground pipelines and pumping stations. Flanges are usually attached to the conduits by means of bolts, weld, or adhesives. Different types of flanges are used for diversified industrial applications. Threaded, Weld-Neck, Blind, Slip On, Din, PN, Drilling, and Socket Welding, constitute the primary kinds of flanges that are used across various industries these days. Each of these flanges has been described below:

1) Threaded Flanges:
Threaded flanges are special kind of flanges in which welding is not necessary. These flanges are considered ideal for high pressure applications. They are among the most demanded flanges in the industry. Threaded flanges are so named because they possess a swirl pattern which helps in coupling them with the external threaded pattern on pipes. Threaded flanges come in various dimensions.

2) Weld-Neck Flanges:
Weld-neck flanges can be easily recognized by their long tapered hub due to which they have also got their name. This pivot or hub which resembles the shape of a neck, provides sturdy grip when it fits inside the pipe. These flanges are used in multiple industrial applications, including high pressure applications. Weld-neck flanges are also considered good for the regions having very high of low temperatures.

3) Blind Flanges:
Blind flange is a unique variety of flange, which do not have a bore. They are sometimes also referred as bore-less flanges. These flanges primarily work as a device for closing the end of pipes and tubes. They also facilitate safe and easy inspection of pipelines, once they are sealed through it. Nowadays, blind flanges are fabricated in various dimensions and grades to suit the requirement of various industries.

4) Slip On Flanges:
Slip on flanges refer to that variety of flanges, which possess a bore that is somewhat more in diameter than the corresponding outer diameter of the matching pipe. Once the pipe get fitted inside the flange, both interior and exterior welding is done to make an airtight seal. Slip on flanges are relatively easier to install. These flanges are, however, commonly not used in high pressure applications.

5) Din Flanges:
DIN flanges are one of the commonly used flanges in various industries. These flanges are widely used in industries like construction, engineering, petrochemicals, power generation, and so. Corrosion resistance, abrasion resistance, and extreme temperature tolerance, are some of the primary traits of these flanges. DIN flanges also offer a high level of customization in comparison to any other flange.

6) PN Flanges:
PN flanges are also very efficient in operation. They are primarily used in industries like cement, petrochemicals, construction, fertilizers, etc. The main attributes of these flanges include their high efficiency, dimensional accuracy, corrosion resistance, durability, and perfect finish. PN flanges are usually fabricated from carbon steel, which provides them longevity.

7) Socket Welding Flanges:
Socket welding or socket weld flanges are moderately similar to the slip-on flanges in appearance. The basic difference between these two flanges is of the inner boar's diameter. Unlike the slip on flange, the counter boar's diameter of the socket weld flange is somewhat more in comparison to the matching pipe's outer diameter. These flanges are also preferred for high pressure and temperature applications.

8) Drilling Flanges:
Also sometimes called adapter flanges, drilling flanges can make necessary modifications in an independent screwed casing head to make it suitable to get accommodated in a flanged blow out preventor (BOP). These flanges are widely demanded in industries like ship building, petrochemicals, power generation, and so. Nowadays, these flanges can be found in various designs and dimensions.