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Prime Steel is a Reputable Manufacturer in the industry, specializing in the production of ANSI/ASME B16.5 Flanges. With a commitment to delivering top-notch quality, We ensure that its flanges adhere to the stringent standards set by the ANSI and ASME. Our emphasis on quality control, coupled with cutting-edge manufacturing processes, sets us apart as a trusted provider of Industrial Flanges, meeting the demands of clients seeking excellence in their projects.
Understand Project Requirements
Review Industry Standards
Consider Material Compatibility
Flange Size and Pressure Class
Flange Type Based on Application
Evaluate Sealing Requirements
Budget and Cost Analysis
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
15mm ( 1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.
FF—Flat Face, RF—Raised Face, FM—Female Face, M—Male Face, T—Tongue Face, G—Groove Face, RJ—Ring Joint.
Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel & Super Duplex Steel, LTCS, Nickel Alloy
oil and gas, petrochemicals, power generation, marine and food & beverage process lines, and water treatment
The ANSI/ASME B16.5 and B16.47 flange specifications have their origins in the earlier B16.1 specification. B16.1 primarily dealt with cast iron flanges, and as industrial needs evolved.
Read MoreDeutsches Institute fur Normung flange specification, consisting of a variety of European styles that have been unified into one code for commonality.
American Petroleum Institute flanges and fittings are referenced under API 6A and utilized for high-pressure oilfield applications.
“JIS” Stands for Japanese Industrial Standard and is published by the Japanese Standards Association (JSA), the equivalent of ANSI in the United States.
Read MoreAmerican Water Works Association flanges are the exact opposite of the API flanges and can be found in various assemblies in which temperature is ambient and media is not corrosive.
Read MoreGOST refers to the national standards system used in Russia and other countries that were part of the former Soviet Union. These standards are set by the Federal Agency.
Read MoreIn the realm of piping systems and engineering, terms like "Flange Pressure Class," "Flange Class Rating," and "Flange Class" are often employed interchangeably to denote the pressure rating or class designation of a flange. This class rating is a pivotal parameter, specifying the pressure at which a flange can safely operate within a given system. A typical representation includes the class number followed by symbols like ‘#’, ‘Lb’, or ‘lbs’ – for instance, a "Class 150#" flange denotes a pressure rating of 150 pounds per square inch (psi).
Flanges are classified into different pressure classes to specify their maximum working pressure and are designed to suit different pressure ratings. The pressure class is an important factor in determining the appropriate flange for a specific application. The working pressure depends on various factors, including the material, temperature, and other design considerations.
If you need precise information about the working pressure for a Class 1500 flange, it is essential to consult the industry standards ASME/ANSI B16.5 for flanges. The standards or manufacturer's documentation will provide the necessary details regarding the maximum allowable working pressure for a Class 1500 flange under specific conditions.
The '#' symbol is used to indicate pounds, so it's as "150 pounds per square inch." Commonly used in low-pressure applications such as water supply, heating, and general industrial processes.
Read MoreThe '#' symbol is used to indicate pounds, so it's as "300 pounds per square inch." Suitable for moderate-pressure applications in industries like chemical processing and oil refineries.
Read MoreThe '#' symbol is used to indicate pounds, so it's as "600 pounds per square inch." Used in higher-pressure applications where increased strength and reliability are required, such as in power plants.
Read MoreThe '#' symbol is used to indicate pounds, so it's as "900 pounds per square inch." Employed in demanding applications with higher pressure requirements, and high-temperature processes.
Read MoreThe '#' symbol is used to indicate pounds, so it's as "1500 pounds per square inch." Designed for severe service conditions, often found in the chemical and petrochemical industries.
Read MoreThe '#' symbol is used to indicate pounds, so it's as "2500 pounds per square inch." Reserved for high-pressure applications, such as those found in critical processes within the oil & gas industry.
Read MoreFlanges stand as integral components within piping systems, playing a pivotal role in establishing robust connections between pipes, valves, and various equipment. flanges serve as critical junction points, facilitating the seamless integration of different elements in a piping network. Whether it's a weld neck, slip-on, or blind flange, each type is designed with specific applications in mind, offering versatility to meet diverse engineering needs.
The use of flanges not only provides structural support but also simplifies assembly processes and facilitates convenient maintenance in industrial settings. In essence, flanges contribute significantly to ensuring the overall integrity, efficiency, and reliability of piping systems across various industrial applications.
Flanges are typically flat, circular discs that are used to connect pipes, valves, pumps, and other equipment in a piping system. They are attached to the ends of pipes, valves, or other equipment to facilitate the connection of different sections of a piping system. Flanges come in various types, such as weld neck, slip-on, socket weld, lap joint, and blind flanges.
Gaskets are soft, deformable materials placed between the facing surfaces of two flanges to create a leak-tight seal. The gasket material is selected based on the type of fluid, temperature, and pressure conditions in the piping system.
Common gasket materials include rubber, compressed fiber, and various types of elastomers or metals, depending on the application.
Bolts and nuts are used to secure the flanges together, compressing the gasket and creating a tight seal. The number and size of bolts depend on the flange size and pressure rating.
Bolt materials are typically carbon steel, alloy steel, or stainless steel, and they are chosen based on the corrosion resistance and strength required for the specific application.
Flange Type: (welding neck, slip-on, threaded, lap joint flange)
Flange Specification: (example ASME B16.5, ASME B16.47 type A, EN 1092-1, JIS, UNI, DIN, etc.)
Nominal pipe size (NPS)
Flange Rating (or class): flanges’ rating can range from 150 to 2500 for ASME flanges, from 5k to 30k for JIS B2220 flanges and KS1503 flanges; from PN 6 to PN 100 for European and Russian-standard flanges (DIN, UNI, EN 1092-1, GOST 12820 / 12821-80); Class 600/3, 1000/3, 1600/3, 2500/3, 4000/3 for SANS/SABS flanges (South African standard for flanges)
Pipe Schedule: (for welding neck and socket weld flanges)
Flange Facing Type (FF; RF, RTJ): according to ASME B16.5, the raised face is the standard facing for flanges (different facings, like RTJ or flat face FF, have to be ordered specifically)
Flange Surface Finish: (smooth, stock, concentric serrated, etc)
Material Grade: (forged carbon, stainless, duplex, nickel-alloy steels or, non-ferrous materials as cupronickel, copper, aluminum, and bronze)
The ANSI/ASME B16.5 standard serves as a comprehensive guide for the dimensions and tolerances of pipe flanges, covering a size range from ½" to 24" Nominal Pipe Size (NPS).
ANSI/ASME B16.36 standard stands as a specialized guide, addressing the dimensions and tolerances for a distinct category of flanges known as orifice flanges. Comparable to the widely used ANSI B16.5 standard, B16.36 distinguishes itself by placing a particular emphasis on orifice pressure differential connections.
The ANSI/ASME B16.47 standard is specifically designed to address the dimensions and tolerances of large-diameter pipe flanges, catering to sizes ranging from 26 to 60 inches Nominal Pipe Size (NPS). This standard is instrumental in ensuring the precise specifications for flanges intended for heavy-duty applications where larger diameters are required.
The ASME B16.47 Series B standard emerges as a cornerstone in the realm of large-diameter pipe flanges, offering meticulous guidance on dimensions and tolerances for sizes spanning from 26 to 60 inches in Nominal Pipe Size (NPS). Tailored to meet the demands of robust industrial applications, this standard stands out for its comprehensive coverage of pressure ratings, including Class 75, 150, 300, 400, 600, and 900 lbs.
Check ANSI/ASME B16.5, B 16.47 Series A & B, B16.48 Flange Dimensions Download
