ASME B16.5 Class 300 A105 Carbon Steel/ 304 Stainless Steel Lap Joint Flange Raised Face LJRF for Oil and Gas Industry

ASME B16.5 Carbon Steel Lap Joint Flanges LJRF Class 300LB for Industrial Applications

Introduction:

We appreciate your interest in Shaanxi Peter International Trade Co., Ltd, a well-respected and established firm with years of experience in the industry. We take pride in offering a comprehensive range of high-quality ASME B16.5 Class 300 Lap Joint Flanges.

Our lap joint flanges are designed to provide a reliable and leak-free connection between two pipes or equipment. They conform to the ASME B16.5 standard, which ensures their compatibility with other components in the piping system.

Our lap joint flanges are crafted using high-quality materials, including carbon steel, stainless steel, and various alloys. This guarantees exceptional strength, durability, and corrosion resistance, making them ideal for deployment in challenging environments where they may encounter corrosive elements or extreme temperatures.

Our ASME B16.5 Class 300 Lap Joint Flanges are available in a wide range of sizes, dimensions, and pressure ratings, providing flexibility in design and installation. We can also customize our flanges to meet specific project requirements, including special drilling patterns or dimensions.

Description of ASME B16.5 Carbon Steel Lap Joint Flanges:

ASME B16.5 lap joint flanges are a type of flange that conform to the standards set by the American Society of Mechanical Engineers (ASME). These flanges are widely used in piping systems for various industries, including oil and gas, chemical, petrochemical, and power generation.

When installing the lap joint flange into the piping system, a lap-joint stub end is necessary for proper attachment. The stub end can be visualized as a pipe sleeve, with one end butt welded to the pipe and the other end flared at a right angle to the pipe axis. Together, the lap-joint flange and stub end create a two-piece composite lap joint connection.

Before the "pipe sleeve" is welded onto the adjacent pipe in a lapped connection, the loose-type lap joint flange is slid over the straight length of the pipe sleeve and comes into contact with the back face of the stub end or its "flared shoulder". The flange can be rotated freely to align the bolt holes properly, which are then used to secure the joint. The lap joint flange is also referred to as a lapped "backing flange", while the flared end of the stub end is known as the "lap".

ASME B16.5 Lap Joint Flange Dimensions:         

1.Dimensions are in millimeters(mm).

2.Dimensios can be specified by different purchasers.

Features of ASME B16.5 Lap Joint Flanges:

Lap joint flanges are designed with flat faces and a rounded transition at the lower corner of the bore. The flared end of the stub end extends beyond the flange to create a raised face. Interestingly, the diameter of the flared end matches that of a raised face on a conventional slip-on flange. The specific lap joint facing depends on the overlap of the stub end. In addition to the raised face, other options such as ring joint facing, large male and female facing, and tongue and groove facing can be provided. After machining the facing, the remaining lap thickness should not be less than the nominal wall thickness of the pipe being used. The outside diameter of the lap should align with the facing dimensions specified by ASME B16.5.

Here are the key features and characteristics of ASME B16.5 lap joint flanges:

Lap joint flanges have several distinctive features that make them suitable for certain applications. Here are some key features of lap joint flanges:

Easy Alignment: Lap joint flanges provide flexibility in aligning and positioning pipes during installation or maintenance. The stub end can rotate inside the flange, allowing for easy alignment adjustments without disconnecting the entire piping system.

Welding Convenience: Unlike other types of flanges, lap joint flanges do not require welding directly onto the flange itself. Instead, the stub end is welded to the pipe, making it easier to replace or modify sections of the piping system without cutting and rewelding the flange.

Cost-Effective: Lap joint flanges are generally more affordable compared to other types of flanges. This makes them a cost-effective choice for applications where leak prevention and high-pressure requirements are not critical.

Flexibility in Material Selection: Lap joint flanges are compatible with various piping materials, including carbon steel, stainless steel, and other alloys. This versatility allows them to be used in a wide range of industries and applications.

Low-Pressure Applications: Lap joint flanges are commonly used in low-pressure applications where leakage prevention is not a primary concern. They are suitable for systems with lower pressures, such as low-pressure water lines, non-critical industrial processes, and low-pressure steam systems.

Easy Assembly and Disassembly: The design of lap joint flanges allows for easy assembly and disassembly of the piping system. The stub end can be quickly inserted or removed from the flange without needing to disconnect the entire system, making maintenance and repairs more efficient.

Corrosion Resistance: The choice of material for lap joint flanges can provide varying levels of corrosion resistance. This allows them to be used in applications where corrosion resistance is a requirement, provided the appropriate material is selected.

Advantages of Carbon Steel Lap Joint Flanges in the Applications:

The lap joint flange offers two significant advantages due to its composite two-piece configuration. Consider a lapped joint piping connection that requires an expensive corrosion-resistant alloy (such as nickel, zirconium, tantalum, or titanium) for all "wetted" parts. In this scenario, the stub end can be made from the costly alloy, while the lap joint flange, serving as a backing flange, can be made from more affordable carbon steels. This approach proves to be more cost-effective compared to using a complete alloy flange.

Moreover, since the lap joint flange is not welded directly to the pipe, it allows for easy rotation to align bolt holes during assembly. This feature greatly simplifies the process of assembly and disassembly. Consequently, it facilitates the operation of piping systems that require frequent dismantling for inspection or routine maintenance.

Applications of ASME B16.5 Carbon Steel Lap Joint Flanges:

ASME B16.5 carbon steel lap joint flanges have a wide range of applications in various industries due to their specific design and capabilities. Some common applications include:

Petrochemical Industry: Carbon steel lap joint flanges are often used in the petrochemical industry for sealing off the ends of pipelines, tanks, and pressure vessels. They provide a secure and leak-proof termination point, which is essential for containing hazardous materials and maintaining system integrity.

Oil and Gas Industry: These lap joint flanges are utilized in oil and gas facilities for closing off pipe ends during maintenance, repair, or decommissioning activities. They are also employed in pipeline systems to create terminations that can be easily modified or reopened for future expansions.

Power Generation: In power plants, ASME B16.5 carbon steel lap joint flanges are employed in steam, water, and gas piping systems. They serve as closure devices for pipe terminations and provide a means to isolate sections of the piping network during maintenance and repairs.

Chemical Processing: Carbon steel lap joint flanges are used in chemical processing facilities to seal openings and provide a secure termination point for pipelines, reactors, and storage vessels. They help prevent leaks and maintain the integrity of the system when handling corrosive or hazardous chemicals.

Water Treatment and Distribution: These flanges find application in water treatment facilities and distribution systems for capping off unused pipe ends, creating blockages, or providing access points for future expansion or modification of the infrastructure.

Overall, ASME B16.5 carbon steel lap joint flanges are versatile components that play a crucial role in creating secure terminations, facilitating maintenance, and ensuring the integrity of piping systems across a wide range of industrial applications.

ASME B16.5 Lap Joint Flange Dimensions: