ANSI B16.5 Carbon Steel/Stainless Steel ASTM A182 F304/304L F316/316L Lap Joint Flange 400LB For Chemical Plants

ASME B16.5 Carbon Steel Lap Joint Flanges LJRF Class 400LB 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 400 Lap Joint Flanges.

Our company, Shaanxi Peter International Trade Co., Ltd is a supplier of lap joint flanges that comply with ASME B16.5 standards, available in Class 150 through Class 2500. Our range includes a comprehensive selection of steel and alloy steel materials to meet various industry requirements.

Our commitment to quality is reflected in every aspect of our business. We source our products from trusted and reliable manufacturers who adhere to strict quality standards. Our team of experienced professionals ensures that every product we supply meets or exceeds industry standards and specifications.

In addition to supplying high-quality lap joint flanges, we also offer technical advice and assistance to help our customers make informed decisions. With our expertise and knowledge, we can help clients choose the right product for their specific application, ensuring optimal performance and durability.

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".

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.

It's important to note that lap joint flanges may not be suitable for high-pressure or critical applications where leak prevention is crucial. Consulting with a qualified engineer or industry expert will help determine whether lap joint flanges are the right choice for a specific application based on the operating conditions and requirements.

ASME B16.5 Lap Joint Flange Dimensions:

1.Dimensions are in millimeters(mm).

2.Dimensios can be specified by different purchasers.

Grades of Carbon Steel Lap Joint Flanges:

American standard carbon steel flanges are flanges made of carbon steel and are widely used in industries such as petroleum, chemical, natural gas, shipbuilding, construction, and water conservancy. Its carbon steel grades are usually divided into the following parts:

1.Q235: Q235 is a commonly used carbon structural steel grade specified in the Chinese national standard GB/T 700. It is often used in general engineering structures and manufacturing industries. In carbon steel flanges, Q235 material is commonly used for pipeline systems operating at low pressure, low temperature, and non-critical stress environments.

2.A105: A105 is a carbon steel material specified in the American ASTM standard, complying with ASTM A105/A105M requirements. A105 material has good weldability and mechanical properties, making it suitable for use in a wide temperature range from low to high temperatures. It is commonly used for pipeline systems and valve connections under high temperature and high-pressure conditions.

3.A350 LF2: A350 LF2 is also a carbon steel material specified in the ASTM standard, complying with ASTM A350/A350M requirements. LF2 indicates low-temperature service, and this material has good low-temperature toughness and crack resistance. It is commonly used for pipeline systems and valve connections under low-temperature conditions.

4.A694 F42/F52/F60/F65/F70: These material grades are specified in the ASTM A694 standard for carbon steel materials used in high-strength, low-temperature, or normal temperature high-pressure pipeline systems and valve connections. Different grades of materials have different strengths and corrosion resistance properties, suitable for various working conditions.

5.ASTM A181 Gr.1/Gr.2: These carbon steel flange material grades are suitable for pressure vessels, valves, and pipeline fittings under low pressure and low temperature conditions. They have good machinability and mechanical performance.

6.ASTM A516 Gr.70: Gr.70 is a commonly used medium carbon steel grade, known for its good weldability and machinability, suitable for manufacturing flanges and pipe fittings, among others.

7.A216 WCB: A216 WCB is a carbon steel casting material specified in the American ASTM standard, complying with ASTM A216/A216M requirements. WCB stands for cast carbon steel, and it is commonly used for carbon steel flanges that require casting in general engineering structures and manufacturing industries.

These material grades mentioned above are only a part of the commonly used ones, and there are other material grades in practical applications. When selecting the material grade for carbon steel flanges, it is necessary to consider engineering requirements, temperature, pressure, medium, and the requirements of relevant standards to ensure that the flange material meets the corresponding performance and safety requirements.

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.