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Lap Joint Flanges
Lap Joint Flanges are two-piece flange assemblies designed for easy alignment, installation, and maintenance in piping systems. Manufactured from premium quality materials, they provide excellent flexibility, corrosion resistance, durability, and reliable performance for oil & gas, chemical processing, petrochemical, marine, power plants, and industrial applications.
Overview
Lap Joint Flanges are specialized flanges used with stub ends to provide a flexible and easily adjustable piping connection. Unlike standard welded flanges, Lap Joint Flanges can rotate freely around the pipe, making bolt alignment easier during installation.
These flanges are commonly preferred in piping systems requiring frequent inspection, cleaning, or dismantling. Their design helps reduce installation time while maintaining strong sealing performance and operational reliability.
Veltronova Industries supplies high-quality Lap Joint Flanges manufactured using advanced technology and superior-grade raw materials. Available in various sizes, pressure ratings, materials, and international standards, our Lap Joint Flanges are widely used in refineries, petrochemical plants, chemical industries, offshore applications, marine systems, and industrial pipelines.
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Technical Specifications
| Material | Grades Available | Standards | Size Range | Pressure Class | Types | Face Finish |
|---|---|---|---|---|---|---|
| Carbon Steel Lap Joint Flanges | ASTM A105, A350 LF2 | ASME B16.5, ASME B16.47, ANSI | ½” – 60” | Class 150 – Class 2500 | Lap Joint Flange, Loose Flange | Flat Face, Raised Face |
| Stainless Steel Lap Joint Flanges | SS 304/304L, 316/316L, 321, 347, 904L | ASTM A182, ASME B16.5 | ½” – 60” | Class 150 – Class 2500 | Lap Joint, Stub End Flange | Polished, Machined Finish |
| Alloy Steel Lap Joint Flanges | ASTM A182 F5, F9, F11, F22, F91 | ASTM A182, ANSI B16.5 | ½” – 48” | Class 150 – Class 2500 | Industrial Lap Joint Flange | RF, FF Finish |
| Duplex / Super Duplex Lap Joint Flanges | UNS S31803, S32205, S32750, S32760 | ASTM A182 | ½” – 48” | Class 150 – Class 2500 | Loose Type Flange | Pickled & Passivated |
| Inconel Lap Joint Flanges | Inconel 600, 601, 625, 718 | ASTM B564 | ½” – 24” | Class 150 – Class 2500 | Lap Joint Pipe Flanges | Polished Finish |
| Hastelloy Lap Joint Flanges | Hastelloy C22, C276 | ASTM B564 | ½” – 24” | Class 150 – Class 2500 | Industrial Lap Joint Flanges | Polished, Pickled |
| Monel Lap Joint Flanges | Monel 400, K500 | ASTM B564 | ½” – 24” | Class 150 – Class 1500 | Loose Flanges | Machined Finish |
| Titanium Lap Joint Flanges | Titanium Gr.1, Gr.2, Gr.5 | ASTM B381 | ½” – 24” | Class 150 – Class 1500 | Stub End Lap Joint Flanges | Pickled, Polished |
Features & Advantages of Lap Joint Flanges
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Applications Across Industries
Oil & Gas
Used in upstream, midstream and downstream pipeline systems.
Petrochemical
Used in upstream, midstream and downstream pipeline systems.
Power Generation
Used in upstream, midstream and downstream pipeline systems.
Chemical Processing
Used in upstream, midstream and downstream pipeline systems.
Marine & Offshore
Used in upstream, midstream and downstream pipeline systems.
Water Treatment
Used in upstream, midstream and downstream pipeline systems.
Frequently Asked Questions
Technical questions on our Lap Joint Flanges, answered by our engineering team.
Lap Joint Flanges are used with stub ends to connect piping systems where easy alignment, frequent dismantling, inspection, or maintenance is required.
A Lap Joint Flange rotates freely around the pipe and works with a stub end, allowing easy bolt alignment and installation.
Lap Joint Flanges are available in Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel, Super Duplex Steel, Inconel, Hastelloy, Monel, Nickel Alloy, and Titanium materials.
They are widely used in oil & gas, petrochemical plants, chemical processing units, marine industries, refineries, power plants, and industrial pipelines.
Lap Joint Flanges provide easy installation, flexible alignment, reduced maintenance time, corrosion resistance, durability, and cost-effective performance in piping systems.
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