Stainless Steel Flange for Construction, DN150 PN16 Stainless Steel Weld Flange, Building Pipeline

Flanges are manufactured from a variety of materials to adapt to different operating environments, pressure levels, and mediums. Common options include carbon steel (A105, Q235B), stainless steel (304, 316L, 321), alloy steel (A182 F11, F22), and non-ferrous metals such as copper, aluminum, and titanium. Carbon steel flanges are cost-effective and widely used for general low-pressure applications, while stainless steel variants offer superior corrosion resistance, making them ideal for acidic, alkaline, or high-humidity environments. For extreme conditions like high temperature (above 500℃) or high pressure (exceeding 10MPa), alloy steel flanges are preferred due to their enhanced tensile strength and creep resistance. Custom material selections are available to meet specific project requirements.​
International Standards: Ensuring Interchangeability and Reliability​
Compliance with international standards is paramount to flange quality and compatibility. The most widely adopted standards include:​
ASME B16.5 (USA): Governs steel flanges and flanged fittings for nominal sizes 1/2″ to 24″ and pressure classes 150LB to 2500LB, widely used in North American markets and global oil and gas projects.​
EN 1092-1 (Europe): Specifies flanges for industrial piping systems, covering PN6 to PN40 pressure ratings and DN10 to DN4000 nominal diameters, with common types including PN16, PN25, and PN40.​
JIS B2220 (Japan): Applies to carbon steel and stainless steel flanges for water, air, and steam pipelines, with pressure classes ranging from 10K to 40K.​
GB/T 9112-2010 (China): National standard for steel flanges, compatible with international standards and widely used in domestic infrastructure and export projects.​
DIN 2501 (Germany): Focuses on weld neck flanges, slip-on flanges, and blind flanges for industrial applications, known for precise dimensional tolerances.