10 Piece (MOQ)
| Business Type | Manufacturer, Exporter, Retailer, Trader |
| Product Name | Lap Joint Flanges, Loose Flange, LJ / LJFF / LJRF Flange |
| Size Range | 1/2 inch (15 NB) to 48 inch (1200NB) |
| Class / Pressure Rating | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Click to view more | |
Product Details
Dimensions
ANSI B16.5, ANSI B16.47 Series A & B, ASA, API-605, MSS SP44, AWWA, Custom Drawings
Custom Design
As per your drawing, AS, BS, ANSI, DIN, JIS, Equal and Reducing Configurations
Coating
Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanised
Applications/Usage
Offshore, Oil Field, Shipbuilding, Water System, Natural Gas, Pipe Projects, Electric Power, etc.
High-Quality Lap Joint Flange Manufacturer for Flexible Piping Systems
Finding a reliable lap joint flange manufacturer is crucial when your industrial piping requires frequent dismantling, inspection, and cleaning. At Rising Star Steel Industries Private Limited, we engineer premium lap joint flanges designed to simplify maintenance while maintaining exceptional structural integrity. Our flanges work seamlessly with stub ends, allowing you to easily rotate the flange to line up bolt holes perfectly. This unique design drastically reduces assembly time and minimizes alignment issues in complex piping networks.
Engineered for Seamless Maintenance and Versatility
Lap joint flanges are incredibly cost-effective, especially in systems handling corrosive fluids. Because the backing flange itself never comes into direct contact with the process media, you can use affordable carbon steel or ductile iron for the flange, while using a high-grade alloy stub end only where it touches the fluid.
We manufacture these components to strict international standards (including ASME, ANSI, and DIN) ensuring they withstand demanding industrial environments.
Key Benefits of Our Lap Joint Flanges
- Effortless Bolt Realignment: The loose-fitting backing design lets you rotate the flange freely, making bolt hole alignment fast and stress-free.
- Significant Cost Savings: By pairing a carbon steel backing flange with a corrosion-resistant alloy stub end, you save money without sacrificing performance.
- Simplified Inspections: Ideal for systems that require frequent tearing down, cleaning, and routine component checks.
- Stress Reduction: Excellent for applications where space is tight and piping configurations put physical stress on rigid connections.
Why Partner with Rising Star Steel Industries?
We combine years of manufacturing expertise with rigorous quality control to deliver piping solutions you can depend on. Every flange leaves our facility only after passing strict dimensional and material verification tests. We utilize advanced production technology to ensure tight tolerances, smooth finishes, and flawless mechanical properties. Whether you need standard sizes or custom specifications, our team provides responsive support, transparent lead times, and reliable global delivery.
Upgrade Your Piping Efficiency
Do not let alignment struggles and high material costs slow down your operations. Contact Rising Star Steel Industries Private Limited today to discuss your project specifications, request a competitive quote, or speak with our technical team about your custom piping needs.
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Lap Joint Flange FAQs
A lap joint flange is a two-piece component consisting of a backing flange and a separate stub end. The stub end is welded directly to the pipe, while the backing flange slips over it and remains loose. Because the flange can rotate freely, it allows for quick and easy alignment of bolt holes during installation or maintenance.
We combine advanced engineering with strict quality control to deliver durable, code-compliant piping components. Every product undergoes rigorous material testing and dimensional checks to ensure flawless field performance. Plus, we offer flexible sizing, transparent lead times, and expert technical support to keep your projects on schedule.
These flanges are ideal for low-pressure systems that require frequent dismantling for cleaning, routine inspections, or part replacements. They are widely utilized in chemical processing plants, water treatment facilities, paper mills, and pharmaceutical piping systems where quick maintenance is a priority.
They offer massive cost savings in corrosive environments. Because the backing flange never touches the fluid inside the pipe, it doesn't need to be made of expensive materials. You can use a highly resistant alloy for the stub end (where fluid flows) and economical carbon steel for the loose backing flange.
Generally, no. Because the backing flange relies on the lip of the stub end to hold the pressure, lap joint flanges have lower pressure-holding capabilities compared to welding neck flanges. They are best suited for low to moderate-pressure applications.
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