Descripción
Detalle del producto
A raised face weld neck flange is a forged flange with a long tapered hub and a raised sealing face, designed to be butt welded to pipe for superior strength and reduced stress concentration. The raised face improves gasket seating pressure, while the weld neck design provides excellent performance in high-pressure, high-temperature and severe service conditions. It is widely used in refinery units, process piping, líneas de vapor, offshore systems and critical utility networks.
SASA FLANGE supplies raised face weld neck flanges in standard and customized dimensions according to ASME, EN, DIN, Requisitos JIS y GB. Cada pedido puede estar respaldado por análisis químicos., pruebas mecanicas, inspección dimensional, Pruebas del PMI, EN 10204 3.1 certificate and full heat number traceability to meet international project and end-user specifications.
- ✓Nombre del producto: Raised Face Weld Neck Flange
- ✓Grado del material: ASTM A105N, A350 LF2, A182F304/F316, F11/F22, F51
- ✓Tipo de producto: Forged butt-weld flange with raised face sealing surface
- ✓Característica principal: High strength hub design for pressure, temperature and cyclic loading service
- ✓Aplicaciones: Petróleo y gas, petroquímico, generación de energía, marina, water treatment and process piping
Parámetros del producto
| Nombre del producto | Raised Face Weld Neck Flange |
| Grado del material | ASTM A105N, A350 LF2, A182 F304/F304L, F316/F316L, F321, F11, F22, F51, F53 |
| Tipo de material | Acero carbono, Low Temperature Carbon Steel, Acero inoxidable, Acero aleado, Acero inoxidable dúplex |
| Formulario de producto | Brida forjada, machined raised face, butt-weld neck |
| Rango de tamaño | DN15 – DN1500 (1/2 pulgada – 60 pulgada) |
| Clase de presión | Clase 150 – 2500 / PN6 – PN100 |
| Cara de sellado | RF, FF, RTJ, TG, MFM |
| Tratamiento superficial | Aceite antioxidante, Black paint, Yellow transparent varnish, Hot-dip galvanized, Passivation |
| Estándar | ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS B2220, GB/T 9119 o especificación del cliente |
| Inspección | Análisis químico, Prueba mecánica, Prueba PMI, Dimensional, Hidrostático |
| Certificado | EN 10204 3.1 Certificado de material disponible |
| Servicio de procesamiento | Corte, Mecanizado CNC, Perforación personalizada, Procesamiento de tamaño personalizado |
Composición química
The chemical composition below is for reference based on a common forged carbon steel grade used for raised face weld neck flanges. Final chemistry depends on the selected material grade, applicable manufacturing standard and the issued mill test certificate. Acero inoxidable, alloy steel and duplex grades will have different composition limits according to their respective ASTM or EN standards.
| Elemento | do | Y | Minnesota | PAG | S | cr | En | Mes | Otro |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A105N % | 0.35 máximo | 0.10 – 0.35 | 0.60 – 1.05 | 0.035 máximo | 0.040 máximo | 0.30 máximo | 0.40 máximo | 0.12 máximo | Cu 0.40 máximo, V 0.08 máximo |
Propiedades mecánicas
Mechanical properties of raised face weld neck flanges vary according to the selected material grade, forging practice, condición del tratamiento térmico y espesor de la sección. The values below are typical minimum requirements for widely used flange materials and are provided for general technical reference. Project specifications, code requirements and MTC data should be checked for final purchasing confirmation.
| Calificación | Resistencia a la tracción | Fuerza de producción | Alargamiento | Dureza | Densidad |
|---|---|---|---|---|---|
| ASTM A105N | 485 MPa mín. | 250 MPa mín. | 22% mín. | 187 HB máx. | 7.85 g/cm3 |
| ASTM A182 F316/F316L | 515 MPa mín. | 205 MPa mín. | 30% mín. | 217 HB máx. | 7.98 g/cm3 |
Tabla de tamaños comunes
| Rango de tamaño | Clase de presión | Cara de sellado | Material | Disponibilidad |
|---|---|---|---|---|
| DN15 – DN50 | Clase 150 – 600 | RF | A105N, F304/L, F316/L | Existencias / Producción |
| DN65 – DN300 | Clase 150 – 1500 | RF / RTJ | A105N, LF2, F304/L, F316/L, F11, F22 | Existencias / Producción |
| DN350 – DN600 | Clase 150 – 2500 | RF / RTJ | A105N, LF2, F11, F22, F51 | Producción |
| DN700 – DN1500 | Clase 150 – 900 | RF | A105N, F304/L, F316/L | Hecho a pedido |
Comparación de diferentes especificaciones
| Tipo | Descripción | Uso típico |
|---|---|---|
| Cuello de soldadura con cara elevada | Butt-weld flange with tapered hub and raised gasket seating surface | General high-pressure and process piping systems |
| Flat Face Weld Neck | Weld neck flange with full flat sealing surface for full-face gasket contact | Low-pressure cast iron valves or flat face equipment connections |
| RTJ Weld Neck | Weld neck flange with ring type joint groove for metal ring gasket sealing | alta presion, high-temperature and critical hydrocarbon service |
| Long Weld Neck | Extended neck design used as nozzle flange or vessel connection | Recipientes a presión, columns and special engineered equipment |
Normas equivalentes y nombres internacionales
Raised face weld neck flanges are produced under several international dimensional systems. While flange dimensions, drilling and pressure ratings differ by region, equivalent product forms are available across USA, Europa, Alemania, Japan and China. Material names may also vary, so project buyers should confirm both flange standard and forging grade equivalence during technical review and quotation.
| Estándar / Región | Código estándar | Grado típico / Equivalente |
|---|---|---|
| EE.UU | ASME B16.5 | ASTM A105N, A182F304/F316, A350 LF2 |
| Europa | EN 1092-1 | P250GH, 1.4301, 1.4404, 13CrMo4-5 |
| Alemania | DIN 2633 / 2635 / 2637 | C22.8, 1.4301, 1.4404, 16Mo3 |
| Japón | JIS B2220 | SFVC2A, SUS304, SUS316 |
| Porcelana | GB/T 9119 | 20#, 16Minnesota, 304, 316, 12Cr1MoV |
Flujo del proceso de producción
Manufacturing quality of raised face weld neck flanges depends on strict control from raw material selection through forging, machining and final inspection. SASA FLANGE applies process monitoring and traceability at each stage to ensure dimensional accuracy, correct material grade and reliable sealing performance.
- 1. Selección de materia prima
- 2. Forja / Corte
- 3. Tratamiento térmico
- 4. Mecanizado en desbaste
- 5. Terminar el mecanizado
- 6. Perforación
- 7. Tratamiento superficial
- 8. Inspección
- 9. Calificación
- 10. Embalaje
- 11. Entrega
| Paso del proceso | Descripción | Punto de control de calidad |
|---|---|---|
| Materia prima | Seleccione palanquillas o placas de forja certificadas | Certificado de material y trazabilidad |
| Forja | Forjado en caliente para lograr la forma requerida. | Temperatura de forjado y relación de reducción. |
| Tratamiento térmico | Normalizando, templado o recocido | Control de temperatura y tiempo de mantenimiento. |
| Mecanizado | Cara de sellado, agujeros para pernos, dimensiones | Precisión dimensional y acabado superficial. |
| Inspección | Inspección final antes del envío. | Dimensión, superficie, PMI, hidrostático |
Inspección del producto
1. Inspección de composición química
Chemical analysis is performed to verify that the forging material conforms to the required grade such as A105N, LF2, F304 or F316. Test results are checked against applicable ASTM or EN limits for carbon, manganeso, sulfur, phosphorus and alloying elements. This confirms material suitability before machining and shipment and supports full traceability documentation.
2. Pruebas de propiedades mecánicas
Mechanical testing confirms that the flange material achieves the specified tensile strength, límite elástico, elongation and hardness after forging and heat treatment. Typical tests are carried out in accordance with relevant material standards and project requirements. These results help ensure the raised face weld neck flange can perform safely in pressure and temperature service.
3. Inspección dimensional
Dimensional inspection covers outside diameter, aburrir, dimensiones del cubo, espesor de brida, círculo de pernos, tamaño del agujero del perno, hole quantity and raised face geometry. Surface finish of the gasket seating area is also checked to meet the required serration or machining standard. Accurate dimensional control is essential for fit-up, leak tightness and field installation efficiency.
4. Pruebas PMI y pruebas hidrostáticas
PMI testing is available to verify alloy identity and prevent material mix-up, especially for stainless steel, alloy steel and duplex grades. Hydrostatic or pressure-related verification can be arranged according to project scope and mating assembly requirements. SASA FLANGE también proporciona EN 10204 3.1 certificado, inspection records and heat number traceability for export and project documentation.
Embalaje del producto
- ✓Embalaje de caja de madera: Adecuado para productos de alta presión y gran diámetro.
- ✓Embalaje de paletas con film retráctil: Adecuado para envíos por lotes y tamaños estándar
- ✓Recubrimiento de aceite antioxidante + Papel impermeable: Utilizado para la protección del transporte marítimo.
- ✓Bolsa de plástico individual + Caja de cartón: Utilizado para accesorios pequeños y productos roscados.
- ✓Borrar marcado: Calificación, tamaño, clase de presión, número de calor y número de pedido
Aplicaciones
Raised face weld neck flanges are widely selected for piping systems that require strong butt-welded joints, controlled gasket seating stress and dependable sealing under pressure and temperature changes. Their tapered hub reduces stress concentration and improves service life, making them suitable for demanding industrial environments across energy, process and utility sectors.
| Industria | Aplicaciones típicas | Por qué se utiliza este producto |
|---|---|---|
| Petróleo y gas | Pipeline terminals, refinerías, gas compression skids, drilling and production lines | Provides high joint strength, good fatigue resistance and reliable sealing in pressure service |
| Procesamiento químico | Acid lines, solvent systems, reactor piping, process transfer lines | Available in stainless and alloy grades for corrosion resistance and process safety |
| Generación de energía | Líneas de vapor, boiler feed systems, condensate and high-temperature utility piping | Weld neck design performs well under thermal cycling and elevated pressure |
| Tratamiento de agua | Estaciones de bombeo, unidades desalinizadoras, filtration skids and utility piping | Offers durable flange connection with easy maintenance and gasketed sealing |
| Marino y Offshore | Sistemas de agua de mar, topside piping, ballast lines and offshore modules | Suitable for harsh environments with strong mechanical integrity and optional corrosion-resistant grades |
¿Por qué elegir? SASA FLANGE?
- ✓Professional manufacturer of Weld Neck Flange for global industrial projects
- ✓Tamaño personalizado, clase de presión y calidad del material según dibujos
- ✓Soporte estándar completo: ASME, EN, DIN, JIS, ES, GOST y especificaciones del cliente.
- ✓Trazabilidad del material con control del número de calor y EN 10204 3.1 certificado de materiales
- ✓Análisis químico, pruebas mecanicas, Pruebas del PMI, inspección hidrostática y dimensional
- ✓Disponibilidad de stock para artículos estándar., plazo de entrega 3-7 días; producción personalizada 15-30 días
- ✓Embalaje de exportación para el mar, transporte aereo y terrestre
- ✓15+ años de experiencia suministrando 50+ países en todo el mundo
Preguntas frecuentes
q: What is a raised face weld neck flange?
A: A raised face weld neck flange is a forged flange with a tapered hub that is butt welded directly to pipe and a slightly elevated gasket seating area. The raised face concentrates gasket load for better sealing, while the neck improves stress distribution. It is commonly used in high-pressure, high-temperature and critical service piping systems.
q: What materials are available for raised face weld neck flanges?
A: SASA FLANGE can supply raised face weld neck flanges in carbon steel, low-temperature carbon steel, acero inoxidable, alloy steel and duplex stainless steel. Los grados comunes incluyen ASTM A105N, A350 LF2, A182 F304/F304L, F316/F316L, F11, F22, F51 y F53. Other grades can be produced according to customer drawings and project specifications.
q: ¿Qué clase de presión se admite??
A: Raised face weld neck flanges are available in ASME Class 150, 300, 400, 600, 900, 1500 y 2500, with comparable PN ratings under EN and DIN systems such as PN6 to PN100 depending on size and standard. The final pressure rating depends on the selected dimensional standard, grado del material, design temperature and end-user specification.
q: Poder SASA FLANGE suministrar tamaños personalizados?
A: Sí. SASA FLANGE can produce non-standard and project-specific raised face weld neck flanges based on drawings or technical datasheets. Custom services include special bore sizes, non-standard drilling, alternative facing types such as RF or RTJ, materiales especiales, extra machining requirements and marked traceability to match valves, equipment or skid package connections.
q: ¿Qué certificado se proporciona??
A: SASA FLANGE proporciona EN 10204 3.1 material certificate for raised face weld neck flanges, together with mill test certificate data and inspection reports as required. Available documentation can include chemical analysis, propiedades mecánicas, registros de inspección dimensional, PMI testing results and heat number traceability. Additional third-party inspection support can also be arranged for project orders.
Contáctenos
If you are looking for raised face weld neck or related custom flange products, por favor contacte SASA FLANGE con tu talla requerida, clase de presión, grado del material, estándar, tratamiento superficial, requisitos de cantidad e inspección. Nuestro equipo proporcionará soluciones técnicas profesionales y cotizaciones competitivas dentro de 24 horas.
- 📧 Correo electrónico: sales@sasaflange.com
- 📱 WhatsApp: +86 13764965049
- ☎️ Teléfono: +86 21 52236361
- 🌐 Sitio web: www.sasaflange.com
