Carbon steel long weld neck flanges are a type of flange used in piping systems for various industrial applications. These flanges are characterized by their long neck, which provides a smooth transition from the pipe to the flange. They are typically welded to the pipe, providing a strong and secure connection. Here is a detailed overview of carbon steel long weld neck flanges: Design and Dimensions: Carbon steel long weld neck flanges are designed to meet industry standards, with ASME B16.5 being a common reference. They come in various pressure classes, allowing for use in a wide range of applications. The flanges have a raised face (RF) or flat face (FF) to accommodate gaskets and provide a reliable seal. The long neck of these flanges serves several purposes: it adds reinforcement to the connection, allows for proper alignment of the pipe, and provides space for welding.
Material: Carbon steel long weld neck flanges are typically made from carbon steel, which conforms to specific grade requirements. The chemical composition of the carbon steel may include carbon (C), manganese (Mn), phosphorus (P), sulfur (S), and silicon (Si), with variations depending on the grade and manufacturer. Welding: These flanges are specifically designed for welding to the pipe. The long neck facilitates a smooth and strong weld joint between the flange and the pipe, ensuring a leak-free connection. Proper welding techniques and procedures should be followed to ensure the integrity of the weld. Pressure Ratings: Carbon steel long weld neck flanges come in various pressure classes, such as 150#, 300#, 600#, and more. The pressure class indicates the flange's ability to withstand different levels of internal pressure within the piping system
| Aspect | Description |
| Standard | ASME B16.5 or other applicable industry standards |
| Flange Type | Long Weld Neck (LWN) Flange |
| Material | Carbon steel, conforming to specified grades |
| Pressure Class | Specifies the pressure rating (e.g., 150#, 300#, 600#, etc.) |
| Size Range | Specifies the nominal size range (e.g., 1/2" to 48") |
| Dimensions | Detailed dimensions for bore, hub, flange face, bolt holes, etc. |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), etc. |
| Neck Length | Specifies the length of the weld neck, typically specified as "S" dimension |
| Connection Type | Welded connection to the pipe |
| Temperature Range | Specifies the allowable temperature range for the flange material |
| Testing and Inspection | Requirements for various non-destructive and destructive tests to ensure product quality |
| Marking and Certification | Products must be marked with material identification, pressure class, size, and other relevant information. Certification documents should be provided |
| Application and Usage | Used in piping systems for various industrial applications |
| Compliance with Standards | ASME B16.5 is a common standard for long weld neck flanges, but other standards may also apply, depending on the specific application |
Applications: Long weld neck flanges are used in a wide range of industries and applications, including oil and gas, petrochemical, power generation, and industrial processes. They are suitable for connecting pipes, valves, and other equipment in high-pressure and high-temperature environments. Testing and Quality Control: To ensure product quality and reliability, carbon steel long weld neck flanges undergo various testing and inspection procedures. These may include non-destructive testing (NDT) methods like radiographic testing, ultrasonic testing, and dye penetrant testing, as well as destructive tests to evaluate mechanical properties. Marking and Certification: Flanges are typically marked with important information, including the material grade, pressure class, size, and manufacturer's identification. Certification documents, such as material test reports (MTRs), should be provided to verify compliance with industry standards.
| Element | Typical Composition (%) |
| Carbon (C) | 0.30 - 0.50 |
| Manganese (Mn) | 0.60 - 1.05 |
| Phosphorus (P) | 0.035 (Max) |
| Sulfur (S) | 0.040 (Max) |
| Silicon (Si) | 0.10 - 0.35 |
| Mechanical Property | Typical Value for Carbon Steel Long Weld Neck Flanges |
| Tensile Strength | 485 MPa (70,000 psi) to 655 MPa (95,000 psi) (varies by grade and heat treatment) |
| Yield Strength | Minimum 250 MPa (36,000 psi) (varies by grade and heat treatment) |
| Elongation | Typically around 22% (varies by grade and heat treatment) |
| Hardness | Typically in the range of 143 to 217 Brinell Hardness Number (BHN) (varies by grade and heat treatment) |
Leading Carbon Steel Pipe and Tube Manufacturer, Supplier, and Stockist in India is Ryno Piping Solution Inc. due to the efficacy and dependability of its products. Each month, we deliver containers of carbon steel pipe and tube to Indian ports for a range of clients.
| Bengaluru | Mumbai | Chennai | Hyderabad | Kolkata | Pune |
| New Delhi | Ahmedabad | Jaipur | Surat | Salem | Gandhinagar |
| Bhiwandi | Tiruppur | Sivakasi | Jamnagar | Thiruvananthapuram | Rajahmundry |
| Bhubaneswar | Vijaywada | Firozabad | Agra | Rajkot | Bharuch |
| Panna | Raipur | Cochin | Ludhiana | Panipat | Durgapur |
| Peenya | Pimpri-Chinchwad | Channapatna | Kharagpur | Nashik | Indore |
| Varanasi | Haldia | Rourkela | Navi Mumbai | Moradabad | Noida |
The United Arab Emirates, Europe, Africa, Asia, and all other continents are among the destinations for Ryno Piping Solution Inc.' exports of Carbon Steel Pipe and Tube. We export carbon steel pipe and tubes to a number of countries each month. As a result of our expanding customer base, we currently export two containers of carbon steel pipe and tubes to new locations and ports each month.
| Saudi Arabia | Qatar | Canada | Bangladesh |
| Oman | UAE | Venezuela | Turkey |
| Kuwait | Africa | United Kingdom | Singapore |
| Netherlands | China | Malaysia | Sri Lanka |