Lap Joint Flanges Manufacturer

Lap Joint Flange Manufacturer

Lap Joint Flange Manufacturer, Supplier And Exporter

C-Way Engineering Exports is a popular lap joint flange manufacturer, supplier and exporter in India that prioritizes quality by following ASME/ANSI/IS/DIN/BS/JIS standards. We have an exclusive range of standard size lap joint flanges that are ready to be delivered immediately. Our commitment to quality extends beyond lap joint flanges, encompassing various flange types from ½ inch to a massive 48 inches, all crafted from premium materials while sticking to strict international standards. Whatever your project demands are, C-Way Engineering Exports has the lap joint flanges to help with its flawless completion.

Lap joint flanges consist of two components: a flat-faced flange and a stub end. The stub end is welded to the pipe, while the flange slides over the stub end without any welding. The connection is secured with bolts that pass through holes in the flange and lap joint assembly. These flanges are used in applications requiring frequent assembly and disassembly, such as piping systems subject to maintenance or modifications, offshore platforms, and shipbuilding.

All Flanges with standard sizes and materials are readily available in stock for immediate delivery. "Looking for large diameter Flanges ? Contact us today for Customized Flanges.

lap lap-joint-flange

lap lap-joint-flange

Lap joint flanges consist of two main components:

Flange: The flange is a flat, circular disc with a raised face and bolt holes around the perimeter for attaching to the mating flange or equipment. The raised face provides a sealing surface for gaskets. The inner diameter of the flange is slightly larger than the outer diameter of the stub end, allowing the flange to slide over the stub end.

Stub End: The stub end is a short piece of pipe with a beveled end that is welded to the pipe. It has the same outer diameter as the pipe and fits inside the flange. The stub end is welded to the pipe, while the flange is free to rotate around the stub end, providing flexibility and ease of alignment during installation.

To install a Lap Joint Flange, the stub end is welded to the pipe, and then the flange is placed over the stub end. The flange is aligned with the mating flange or equipment, and then the bolts are inserted through the bolt holes and tightened to create a seal.

Applications of Lap Joint Flange

Piping Systems with Rotational Freedom: They are used in piping systems where rotational freedom and easy alignment are required during installation, such as in offshore platforms, shipbuilding, and large-scale industrial facilities.

High-Temperature Applications: LJ Flanges are employed in high-temperature piping systems where thermal expansion and contraction may occur, allowing for flexibility and stress relief at the joint.

Temporary Connections: They are used as temporary connections or test flanges in piping systems for bypass piping, pressure testing, or temporary repairs.

Corrosive Environments: Lap Joint Flanges are suitable for corrosive environments where the flange material may need to be different from the pipe material, as the stub end can be made of a different material than the flange.

Advantages of Lap Joint Flange

With years of experience as a lap joint flange manufacturer, we make sure our lap joint flanges are

  • Easy to Assemble: LJ Flanges allow for easy assembly and disassembly of piping systems, making them ideal for applications requiring frequent maintenance or modifications.
  • Flexibility: The rotational freedom provided by the stub end allows for easy alignment and adjustment during installation, reducing the risk of misalignment and stress on the piping system.
  • Cost-Effective: They are typically more cost-effective compared to other types of flanges, as they require less welding and fabrication time.
  • Versatility: Lap Joint Flanges can be used with a wide range of pipe materials, sizes, and schedules, providing flexibility in piping system design.


We conduct a series of testing procedures to ensure the quality, reliability, and performance of our Flanges.

These tests are conducted at various stages of manufacturing, from raw material inspection to the final product testing.

  • Dimensional Inspection
  • Visual Inspection
  • Non-Destructive Testing
    • Ultrasonic Testing
    • Magnetic Particle Testing
    • Liquid Penetrant Testing
    • Radiographic Testing
  • Mechanical Testing
    • Tensile Testing
    • Hardness Testing
  • Chemical Analysis
  • Intergranular Corrosion Testing
  • Pressure Testing
  • Corrosion Resistance Testing

Type of Flanges:

Specification, Grades, and Material

Flanges Specifications
Flanges Types Lap Joint Flanges
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. available with NACE MR 01-75
Size 1/2″ (15 NB) to 48″ (1200 NB)
Standard ANSI/ASME B16.5, ANSI/ASME B16.47 Series A and Series B, MSS SP44, ASA, API 605, API 6A, AWWA, As per Custom Drawings
Pressure Rating Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc
Type Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove


Stainless Steel ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Duplex Steel ASTM/ASME A/SA 789, 790 – UNS NO S 31803, S 32205, S 32550, S 32750, S 32760.
Carbon Steel ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
Alloys Steel Flanges ASTM A182 F1, F5, F9, F11, F22, F91
Special Alloy Flanges Duplex, Super Duplex, Nickel Alloys
Flange Face Type Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating/Surface Treatment Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Nickel Alloys Nickel Alloys 200, Nickel Alloys 201
Hastelloy Hastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy C-4, Hastelloy X, Hastelloy B, Hastelloy N, Hastelloy G
Inconel Inconel 600, Inconel 601, Inconel 625, Inconel 625LCF, Inconel 686, Inconel 718, Inconel 800, Inconel 825, Inconel X-750 , Inconel 690, Inconel 602, Inconel 617, Inconel 925, Inconel A-289, Inconel AL-6XN, AL-904L

Certification and Documentation

As per International Industrial standards we provide all the necessary certifications. We provide certification and documentation, including material test reports (MTRs), inspection reports and compliance certificates to ensure product quality and compliance with standards and specifications.

These testing procedures ensure that flanges manufactured by us meet the standards, performance, and regulatory compliance. Our flanges meet stringent quality requirements and provide reliable performance in different industrial applications.

Ready to elevate your industrial operations with top-tier valve solutions? Look no further than ‘C-Way Engineering Exports’, where excellence meets innovation in every valve we manufacture.

We regularly export our products to

With decades of experience in the industry, 'C-Way Engineering Exports’ witnessed the critical importance of utilizing high-quality Flanges that meet international standards. Whether you are in Oil and Gas, petrochemical, power generation, or any other industry relying on efficient and reliable piping systems, investing in high quality valves is essential. Don't compromise on safety, performance, or longevity. Partner with trusted lap joint flanges manufacturers in India , supplier and exporter like us ‘C-Way Engineering Exports’, who prioritize quality and adherence to standards, ensuring your projects are built to last.

Contact us today to explore our full range of industrial valves, pipe fittings, pipes & tubes, flanges and experience the excellence of our products and how we can support your piping needs with our expertise and premium-grade valves. Let's build a robust infrastructure together.

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