Flanges

Stainless Steel Flanges of different shapes and sizes with distinct specifications and customers’ requirements. Flanges (ASME/ ANSI, EN, DIN) as well as forged bars.

• ASME – B16.5 Slip on flange, Welding neck flange, Blind Flange ½” to 24” Pressure Class 150-300
• DIN FLANGE EN 1092 – 1 Slip on flange, Welding neck flange, Blind Flange 10 to 1000 ISO-PN10 to PN25

We produce flanges in the size range from ½” to 40”. AlQiase has an established and stringent quality system.

Applications of Stainless Steel Flanges

• Pipeline engineering
• Oil & gas industry
• Mechanical engineering
• Plant engineering
• Marine industry
• Waste water management
• Chemical industry
• Petrochemical industry
• Power industry
• Aerospace
• Food processing industry and many more.

Our integrated facilities include cutting, forging, ring rolling, machines with CNC lathes, CNC drilling, high capacity forging press, and mobile manipulator for making big diameter forged round bars. We also have an in-house heat treatment shop and well-equipped laboratory facilities for ensuring the quality of our products.

Types of Flanges

– Our manufacturing facilities are well equipped to manufacture various types of flanges, namely:

• Blind Flange

A Blind flange is a round plate that has all of the relevant boltholes but no centre hole, and because of this, it is used to close off the ends of piping systems and pressure vessel openings. It also permits easy access to vessels or piping systems for inspection purposes.

• Weld Neck Flange

Weld Neck flanges have a long tapered hub and are often used for high-pressure applications. These flanges are designed to be joined to a piping system by bun welding. The neck or hub transmits stresses to the pipe, reducing stress concentrations at the flange base. The gradual thickness transition from the hub base to the wall thickness at the bun weld provides critical flange reinforcement. The bore of the flange matches the bore of the pipe, reducing turbulence and erosion. These flanges are ideal for extreme temperature fluctuations and environments where there may be high pressure..

• Slip-on Flange

These are easily fitted and welded into different pipes. A slip-on pipe flange is slipped over the pipe and then welded both inside and outside to provide sufficient strength and prevent leakage. These flanges are ideal for lower pressure applications. It is used in preference to weld necks by many users because of its lower cost and the fact that less accuracy is required when cutting pipe to length..

• Socket Weld Flange

These flanges are attached by inserting the pipe into the socket end. It allows for a smooth bore and a better flow of the fluid or gas inside. Socket-weld pipe flanges are mainly used for smaller sizes of high-pressure pipes.

• Threaded Flange

Threaded flanges are similar to slip-on pipe flanges except for the bore of threaded pipe flange has tapered threads. These flanges are ideal for relatively low-pressure piping systems. Threaded flanges are used with pipes that have external threads. The benefit of these pipe flanges is that they can be attached without welding.

• Lap Joint Flange

Lap Joint Flanges slide over the pipe and are most commonly used with stub end fittings. A pipe is typically welded to the stub end, and the lap joint pipe flange is free to rotate around the stub end. Lap Joint pipe flanges are often used for applications that require frequent dismantling. Threaded pipe flanges are often used for small diameter, high-pressure requirements.