A flange is designed to join hoses, valves, fittings, and other device to form a piping system. Flanges are typically screwed or welded. Flange joints are made to provide a seal by bolting two flanges together with a gasket between them. Flanges play an essential role in a variety of industries, such as chemical processing, water treatment, food and beverage, and manufacturing.
Flanges are commonly made from various materials, including carbon steel, stainless steel, alloy steel, cast iron, etc. The selection of the material depends on the nature of the transported substances, temperature, and pressure conditions.
Features and Benefits of Flanges
Easy to install and maintain
Excellent flexibility and durability
Provide a secure and leak-tight seal
Prevent the leakage of fluids or gases and minimize the risk of contamination
Offer a cost-effective hose solution
Applications of Hydraulic Couplings
Flanges are highly versatile and serve as a fundamental component in numerous industries, such as oil and gas industry, chemical processing, power generation, wastewater treatment, food and beverage, pharmaceutical, marine, etc.
Types of Hydraulic Couplings:
Weld Neck Flange: This type of flange has a neck, which is welded to the pipe, and offers superior strength and structural support.
Slip-On Flange: This type of flange is welded in place after it is slid over the pipe. It is not as solid as a weld neck flange, but is easier to align.
Socket Weld Flange: Similar to slip-on flanges, a socket-welded flange requires the pipe to be placed into it before welding.
Threaded Flange: The flange has internal threads, and the pipe has external threads. These are used where welding is not feasible or for low-pressure applications.
Blind Flange: This type of flange is made of a solid disk without a center hole. It is used to seal the end of a pipe or a pressure vessel. It is commonly used for maintenance or to block off a section of a piping system.
Flange designs are governed by the international standards ASME B16.5 & B16.47 in line with the American Society of Mechanical Engineers (ASME).
International Production Standard: GB/T9112-2010 (GB9113·1-2010～GB9123·4-2010）
Chemical Department Standard: HG5010-52～HG5028-58、HGJ44-91～HGJ65-91、HG20592-2009 and HG20615-2009 series
Machinery Department Standard: JB81-59～JB86-59、JB/T79-94～JB/T86-94、JB/T74-1994
Pressure Vessel Standard: JB1157-82～JB1160-82、NB/T47020-2012～NB/T47027-2012、B16.47A/B B16.39 B16