Product Details
Place of Origin: Xi'an, Shaanxi Province, China
Brand Name: PeterTrade(PT)
Payment & Shipping Terms
Minimum Order Quantity: 1-10 Pieces
Price: negotiable
Packaging Details: Wooden Case,plywood Case,pallet Etc.
Delivery Time: about 15-45 days, accordingly
Payment Terms: D/A, T/T, L/C,D/P
Supply Ability: 100-200 Ton/Tons Per Month
Product Standard: |
ASME B16.5 Standard |
Product Type: |
Lap Joint Flanges(LJRF) |
Material: |
Carbon Steel Flanges |
Surface Treatment: |
Black Painting / Anti Rust Oil / Hot Dip Galvanized |
Class(LBS): |
Class 900 |
Size: |
1/2'' To 24'' |
Export Countries: |
More Than 50 Countries |
Application: |
Oil And Gas Pipelines, Chemical Plants, Power Generation Facilities, And Refineries |
Product Standard: |
ASME B16.5 Standard |
Product Type: |
Lap Joint Flanges(LJRF) |
Material: |
Carbon Steel Flanges |
Surface Treatment: |
Black Painting / Anti Rust Oil / Hot Dip Galvanized |
Class(LBS): |
Class 900 |
Size: |
1/2'' To 24'' |
Export Countries: |
More Than 50 Countries |
Application: |
Oil And Gas Pipelines, Chemical Plants, Power Generation Facilities, And Refineries |
ASME B16.5 Carbon Steel Lap Joint Flanges LJRF Class 900LB 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 900 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".
ASME B16.5 Lap Joint Flange Dimensions:
| ASME B16.5 Class 900 Lap Joint FLANGES LJRF | ||||||||||
| Nominal Pipe size | Outside Diam | Diam at Base of Hub | Thickness | Bore | Length | Radius of Fillet | Drilling |
Approximate Weight(lb) |
||
| D | X | t | B3 | T3 | R | Bolt circle dia | Number of holes | Dia of Bolt | ||
| 1/2'' | 121 | 38.1 | 22.4 | 22.9 | 31.8 | 3 | 82.6 | 4 | 22.4 | 6 |
| 3/4'' | 130 | 44.5 | 25.4 | 28.2 | 35.1 | 3 | 88.9 | 4 | 22.4 | 6 |
| 1'' | 149 | 52.3 | 28.4 | 35.1 | 41.1 | 3 | 101.6 | 4 | 25.4 | 7.5 |
| 1.1/4'' | 159 | 63.5 | 28.4 | 43.7 | 41.1 | 4.8 | 111.3 | 4 | 25.4 | 10 |
| 1.1/2'' | 178 | 69.9 | 31.8 | 50 | 44.5 | 6.4 | 124 | 4 | 28.4 | 14 |
| 2'' | 216 | 104.6 | 38.1 | 62.5 | 57.2 | 7.9 | 165.1 | 8 | 25.4 | 21 |
| 2.1/2'' | 244 | 124 | 41.1 | 75.4 | 63.5 | 7.9 | 190.5 | 8 | 28.4 | 25 |
| 3'' | 241 | 127 | 38.1 | 91.4 | 53.8 | 9.7 | 190.5 | 8 | 25.4 | 29 |
| 4'' | 292 | 158.8 | 44.5 | 116.8 | 69.9 | 11.2 | 235 | 8 | 31.8 | 51 |
| 5'' | 349 | 190.5 | 50.8 | 144.5 | 79.2 | 11.2 | 279.4 | 8 | 35.1 | 81 |
| 6'' | 381 | 235 | 55.6 | 171.5 | 85.9 | 12.7 | 317.5 | 12 | 31.8 | 105 |
| 8'' | 470 | 298.5 | 63.5 | 222.3 | 114.3 | 12.7 | 393.7 | 12 | 38.1 | 190 |
| 10'' | 546 | 368.3 | 69.9 | 277.4 | 127 | 12.7 | 469.9 | 16 | 38.1 | 277 |
| 12'' | 610 | 419.1 | 79.2 | 328.2 | 142.7 | 12.7 | 533.4 | 20 | 38.1 | 371 |
| 14'' | 641 | 450.9 | 85.9 | 360.2 | 155.4 | 12.7 | 558.8 | 20 | 41.1 | 415 |
| 16'' | 705 | 508 | 88.9 | 411.2 | 165.1 | 12.7 | 616 | 20 | 44.5 | 488 |
| 18'' | 787 | 565.2 | 101.6 | 462.3 | 190.5 | 12.7 | 685.8 | 20 | 50.8 | 670 |
| 20'' | 857 | 622.3 | 108 | 514.4 | 209.6 | 12.7 | 749.3 | 20 | 53.8 | 868 |
| 24'' | 1041 | 749.3 | 139.7 | 616 | 266.7 | 12.7 | 901.7 | 20 | 66.5 | 1659 |
1.Dimensions are in millimeters(mm).
2.Dimensios can be specified by different purchasers.
The Advantages and Disadvantages of Lap Joint Flanges in the Applications:
The usage of Lap Joint Flanges offers two significant advantages in their application. Let's consider a piping connection that demands the use of an expensive corrosion-resistant alloy like nickel, zirconium, tantalum, or titanium for all "wetted" parts. In such cases, the Stub End can be fabricated from the costly alloy to resist corrosion, while the Lap Joint Flange, acting as a backing flange, can be made from more affordable carbon steels. This approach proves to be cost-effective compared to using an entirely alloy-based flange.
Furthermore, the Lap Joint Flange, not being welded to the pipe, allows for free rotation to align bolt holes, simplifying assembly and disassembly processes. This feature proves beneficial in piping systems that require frequent dismantling for inspection or routine maintenance. By separating the Lap Joint Flange and Stub End without involving the pipe, accessing the joint becomes easier, reducing downtime during maintenance operations.
In summary, Lap Joint Flanges offer a practical and cost-effective solution for piping systems that necessitate corrosion-resistant materials, while also providing ease of maintenance and inspection.
The use of Lap Joint Flanges is associated with certain disadvantages. One key issue is the formation of crevices between the internal surface of the flange bore and the external surface of the stub ends, which can easily collect contaminants and lead to crevice corrosion. This poses a significant challenge for maintaining the joint's integrity and longevity.
Moreover, the accumulation of longitudinal stresses due to pressure, weight, and thermal expansion can exceed the allowable stress limits prescribed by ASME B31.3 at the design temperature. Therefore, Lap Joint Flanges are typically recommended for mild service applications where the loads applied to the flange connection by the pipe are relatively low.
Another potential problem is the occurrence of galvanic corrosion when using Lap Joint Flanges made from different materials than the stub ends. This happens when two dissimilar metals come into contact in the presence of an electrolyte, causing accelerated corrosion.
To overcome these issues, careful consideration must be given to material selection while implementing Lap Joint Flanges in a piping system. Appropriate maintenance and inspection practices should also be employed to mitigate these concerns and ensure optimal performance of the joint.
Applications of ASME B16.5 Carbon Steel Lap Joint Flanges:
ASME B16.5 carbon steel lap joint flanges find applications in various industries and piping systems where carbon steel materials are suitable. Some common applications include:
Oil and gas industry: Carbon steel lap joint flanges are widely used in oil and gas exploration, production, refining, and transportation. They can be found in pipelines, offshore platforms, refineries, and petrochemical plants.
Power generation: Lap joint flanges are utilized in power plants, including thermal power plants, nuclear power plants, and renewable energy facilities. They are used in piping systems for steam, water, and fuel transportation.
Chemical processing: Lap joint flanges are suitable for chemical processing plants where corrosion resistance and durability are essential. They are commonly used in pipelines that transport chemicals, acids, and corrosive fluids.
Water and wastewater treatment: Carbon steel lap joint flanges are utilized in water treatment plants, wastewater treatment facilities, and desalination plants. They are employed in piping systems for water supply, sewage transport, and treatment processes.
HVAC (Heating, Ventilation, and Air Conditioning): Lap joint flanges are used in HVAC systems for commercial buildings, industrial facilities, and residential complexes. They enable the connection of ductwork, pipes, and ventilation systems.
Mining and mineral processing: Carbon steel lap joint flanges are employed in mining operations and mineral processing plants. They are utilized in pipelines for the transportation of ores, slurries, and other mining fluids.
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.
