Key Facts About Flanges Chinese 1/1.5/2-inch pipe flanges

Flanges might not be widely understood or visible daily, but they are prevalent in various pipeline projects. Typically featuring holes, flanges are tightly connected using bolts, and gaskets are employed to seal them, preventing leaks. So, what standards govern flanges, and what are the common types? This article aims to provide a brief introduction to answer these questions!

What is a flange?

A flange, also known as a flange plate or flange plate, serves as the component linking one pipe to another at their ends. A flange connection or flange joint involves a detachable connection, where flanges, gaskets, and bolts form a combined sealing structure. Flanges feature holes through which bolts secure two flanges tightly, with gaskets providing a seal between them, ensuring effective sealing. Any connecting parts bolted and simultaneously closed around two planes are typically called flanges. 

Flange material type.

Flanges come in various types, categorized by their connection method and material composition, among other factors. They are typically used in pairs, with slip-on flanges suitable for low-pressure pipelines and welded flanges preferred for pressures exceeding four kilograms. Bolts secure the two flanges together with a gasket in between. Different pressure ratings require flanges of varying thicknesses and bolt types. Common materials for flanges include carbon steel, nickel steel, chromium, stainless steel, and alloy steel.

Flange standard.

Flange production typically adheres to specific standards, which vary between countries and regions. For instance: 

• National Standard: GB 9112-88 (GB 9113-1-88 to GB 9123-36-88)
• American Standard: ANSI B16.5, ANSI B16.47 Class 150, 300, 600, 900, 1500
• Japanese Standard: JIS 5K, 10K, 16K, 20K.
• German standard: DIN2527, 2543, 2545, 2566, 2572, 2573, 2576, 2631, 2632, 2633, 2634, 2638.
• Italian standard: UNI2276, 2277, 2278, 6083, 6084, 6088, 6089, 2299, 2280, 2281, 2282, 2283.
• British Standard: BS4504, 4506.

Flange application.

Flange connections, renowned for their ease of use and ability to withstand high pressure, are extensively employed in industrial pipelines. While less common in residential settings due to smaller pipe diameters and lower pressures, they are ubiquitous in boiler rooms and production sites, where flanged pipes and equipment abound.

The primary function of a flange is to fasten and seal pipe fittings connections securely. Flanges are crucial in connecting and securing pipes, fittings, and other elements, ensuring the maintenance of sealing performance. Their dissolvability facilitates easy inspection of pipe conditions. Additionally, corrosion-resistant, and durable, reducing flanges find widespread application in water conservation, power generation, industrial piping, pressure vessels, and various other sectors. 

Conclusion

If you're looking for 1-inch, 1.5-inch, or 2-inch pipe flanges from China, we aim to be your optimal choice.