For connecting pipes and fittings in piping systems, lap joint flanges are widely used in a variety of industries. Because of their distinctive design and ease of installation and removal, these flanges are a popular choice for applications that necessitate frequent replacement or maintenance. they are accessible in various materials and details to meet the assorted prerequisites of different applications.
ANSI B16.5 Lap Joint Flanges
ANSI B16.5 is a generally perceived standard that determines the aspects, resiliences, and plan prerequisites for pipe flanges and flanged fittings. This standard gives rules to different sorts of flanges, including weld neck, slip-on, attachment weld, thread, visually impaired, and lap joint flanges. Among these, lap joint flanges are especially remarkable for their exceptional plan and utilitarian benefits, pursuing them a well known decision in enterprises like oil and gas, compound handling, power age, and the sky is the limit from there.
The two primary components of lap joint flanges are: a stub end and the flange itself. The flange can still rotate around the stub end despite being welded to the pipe. This plan considers simple arrangement of the bolt openings during establishment, which can be especially valuable in frameworks where exact arrangement is testing or where continuous dismantling and reassembly of the funneling framework are required.
①Pressure Classes
ANSI B16.5 lap joint flanges are accessible in a scope of strain classes, from Class 150 to Class 2500. These classes signify the most extreme strain that the flange can endure at a given temperature, with higher classes showing higher tension resistance. The accessibility of numerous tension classes guarantees that lap joint flanges can be utilized in different applications, from low-pressure water pipelines to high-pressure steam frameworks.
Their compatibility with other ANSI B16.5 flanges and fittings is one of the main advantages. This guarantees interchangeability and makes it simple to incorporate them into existing piping systems. The ability of the flange to rotate around the pipe stub end makes it easier to align the bolt holes, which saves time and money during installation.
The simplicity of maintenance and inspection is yet another significant advantage. Cleaning, inspection, and pressure testing become easier and less expensive as a result of the flange’s easy removal and replacement without cutting or welding the pipe.
②Application and Usage
Lap joint flanges are frequently used in situations where the piping system must be frequently disassembled for cleaning, inspection, or maintenance. They are ideal for use in systems that deal with corrosive or dangerous materials, where regular inspection is absolutely necessary to guarantee safety and integrity. They are also a great choice for temporary piping systems or systems that need to be changed on a regular basis because of their design.
In the oil and gas industry, these types flanges are many times utilized in pipelines and handling offices where unwavering quality and simplicity of support are principal. In synthetic handling plants, they are utilized in frameworks that transport forceful synthetics, guaranteeing that the funneling framework can be handily reviewed and kept up with. In power age, lap joint flanges are utilized in high-pressure steam and water pipelines, where their hearty plan and simplicity of arrangement are especially helpful.
Stainless Steel Lap Joint Flanges
In industries like chemical processing, pharmaceutical manufacturing, and food and beverage processing where corrosion resistance and hygienic conditions are crucial, stainless steel lap joint flanges are widely used. Austenitic (300 series) and duplex stainless steels are among the various grades of stainless steel used to make these flanges.
Stainless steel products are suitable for harsh environments and aggressive media due to their superior resistance to corrosion, oxidation, and chemical attacks. They also meet the strict hygiene requirements of the pharmaceutical and food industries because they are simple to clean and maintain.
304, 316, and 316L are the most frequently used grades of stainless steel for flanges. 316L is a low-carbon version that is more resistant to intergranular corrosion.
Carbon Steel Lap Joint Flange
Carbon steel lap joint flanges are widely used in industries where cost-effectiveness and moderate corrosion resistance are required, such as oil and gas pipelines, water transmission lines, and general industrial applications.
These flanges are typically made from low-alloy carbon steel grades, such as A105, A350 LF2, and LF3. Carbon steel flanges offer good strength and durability while being more economical than their alloy steel counterparts.
To enhance their corrosion resistance, carbon steel flanges can be coated with various protective coatings, such as paints, galvanizing, or plastic linings, depending on the operating conditions and required level of protection.
Super Duplex Steel Lap Joint Forged Flange
Super duplex steel lap joint forged flanges are designed for applications that require exceptional corrosion resistance, high strength, and superior mechanical properties. These flanges are commonly used in highly corrosive environments, such as offshore oil and gas platforms, desalination plants, and chemical processing facilities.
Super duplex steel is a highly alloyed stainless steel grade that combines austenitic and ferritic microstructures, resulting in superior mechanical properties and outstanding resistance to pitting, crevice, and stress corrosion cracking.
Common grades of super duplex steel used for lap joint forged flanges include UNS S32750, UNS S32760, and UNS S32550. These flanges are typically manufactured through a forging process, which enhances their mechanical properties and ensures consistent quality.
High Nickel Alloy Lapped Joint Flanges
High nickel amalgam lapped joint flanges are intended for applications that require excellent protection from consumption, high temperatures, and forceful conditions. The chemical processing, oil refining, and power generation industries all make use of these flanges frequently because of their frequent exposure to highly corrosive media and extreme temperatures.
High nickel combinations, for example, Composite 800, Compound 825, and Amalgam 600, are known for their better opposition than a large number of destructive conditions, including acidic and basic arrangements, chloride-containing media, and high-temperature oxidation.
These flanges are frequently utilized in high-temperature applications where creep and oxidation resistance are crucial as well as in applications involving the handling of acids, caustics, sour gas, and other aggressive chemicals.
Lap Joint Flange Manufacturers
HeBei Pengrun is a professional Lap Joint Flanges supplier, as We are certified to cater to the rigid and stringent requisites of the most critical of industries. Dimensions: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings. If you choose Lap Joint flange manufacturers, please do not hesitate to reach out to Hebei Pengrun Pipe Fittings Co., Ltd. at Lucy@pr-pipefittings.com.
References:
1. “Lap Joint Flanges” – Flowserve Corporation,
2. “Lap Joint Flange” – Piping Technology & Products, Inc.
3. “Lap Joint Stub Ends” – Sharpe Flanges and Fittings,
4. “Lap Joint Flange” – Engineering360
5. “Lap Joint Flanges” – Rajendra Industrial Corporation,
6. “ANSI B16.5 Lap Joint Flanges” – Bonney Forge Corporation,
