Pipe Flange Specifications
Several governing specifications exist for a wide variety of industrial steel flanges, and each have their own suitability for our customers’ applications.
Here at Texas Flange, our most popular product lines include ASME/ANSI flanges, API flanges, AWWA flanges, and DIN flanges. Let’s dive a bit deeper below.
ANSI/ASME
The industry standard for pipeline flanges and fittings. B16.1, B16.5, and B16.47 are the most recognized standards nationwide Read more...
DIN
Deutsches Institute fur Normung developed a metric standard for flanges and fittings which are most commonly used as an ANSI equivalent for Europe, as well as pressure vessels being sent to foreign markets Read more...
API
American Petroleum Institute flanges and fittings are reference under API 6A and utilized for high pressure oilfield applications Read more...
JIS
A Japanese specification for materials utilized almost exclusively in Japan, but often found in maritime vessels worldwide Read more...
AWWA
The American Water Works Association specification C207 provides flanges mostly of the plate variety and for use in low pressure and low temperature applications Read more...
BOILER CODE FLANGES
We continue to offer replacements for legacy systems or new applications that don’t require B16.47 or AWWA flanges.
Flange Specification and Identification
Flange Types and Facings: Flanges are categorized based on types like 'weld-neck RTJ' or 'socket-weld RF,' along with corresponding RTJ gasket dimensions per ASME B16.5 standards.
Standards: Fundamental flange dimensions adhere to ASME B16.5, BS 1560, DIN, or API 6A.
Nominal Pipe Size (NPS): NPS is a dimensionless label that defines the nominal size of pipes, fittings, or nozzles, denoted as NPS 4 or NPS 6.
Examples include Classes 150, 300, 900, and 1500.
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Products
Texas Flange stocks a wide variety of flanges in all sizes and specifications.
ANSI Flanges
ASME Flanges
AWWA Flanges
Pipe Flanges
Industrial Flanges
Oil & Gas Industry Flanges
Custom Flanges
Petrochemical Flanges
Texas Waterworks Flanges
Ring Joint Flanges
Large Industry Standard Flanges
Metric System Flanges
Plumbing And Mechanical Industries Flanges
Industrial Pumps, Valves And Vessels
Manufacturing Industries Flanges
Heating Systems Industries Flanges
Flange Food And Beverage Industries Flanges
Frequently Asked Questions (FAQs)
A carbon steel flange is a flange made from carbon steel, a durable and strong material composed primarily of iron and carbon. These flanges are commonly used in piping systems to connect pipes, valves, or equipment.
Steel flanges are prized for their strength, toughness, and cost-effectiveness, making them ideal for high-pressure and high-temperature applications.
Flange specification refers to the details that define a flange’s dimensions, material, pressure rating, face type, and connection type. These specifications ensure the flange meets the required mechanical properties, corrosion resistance, and operational demands.
Common flange specifications include nominal pipe size (NPS), pressure class (e.g., 150, 300, 600), face type (e.g., raised face, flat face, ring-type joint), and material composition (such as carbon steel, stainless steel, or duplex steel).
The ASTM standard for flanges primarily includes ASTM A182 for forged stainless steel and alloy flanges, ASTM A105 for forged carbon steel flanges, and ASTM A350 for low-temperature carbon steel flanges.
These standards specify the mechanical properties, chemical composition, and manufacturing processes required to ensure the reliability and durability of flanges in various industrial applications.
