Descripción
Detalle del producto
Hastelloy B2 long weld neck flanges are specialty forged alloy flanges featuring an extended tapered hub that provides improved stress distribution, stronger reinforcement at the nozzle connection and reliable performance in high-pressure or temperature-varying systems. This flange type is commonly selected for reactor nozzles, pressure vessels, corrosive transfer lines and critical process piping in chemical, petrochemical and offshore applications where resistance to hydrochloric acid and other reducing media is required.
SASA FLANGE supplies Hastelloy B2 long weld neck flanges in standard and custom dimensions according to ASME, EN, DIN, JIS, GB or project drawings. 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 ensure compliance with demanding industrial procurement and EPC documentation requirements.
- ✓Nombre del producto: Hastelloy B2 Long Weld Neck Flange
- ✓Grado del material: ASTM B564 UNS N10665 / Hastelloy B2
- ✓Tipo de producto: Forged nickel alloy long weld neck flange
- ✓Característica principal: Excellent corrosion resistance in reducing acid service with reinforced long hub design
- ✓Aplicaciones: Procesamiento químico, manejo de ácido, pressure vessels, sistemas marinos, specialty piping
Parámetros del producto
| Nombre del producto | Hastelloy B2 Long Weld Neck Flange |
| Grado del material | ASTM B564 UNS N10665, Hastelloy B2 |
| Tipo de material | Nickel-Molybdenum Alloy |
| Formulario de producto | Falsificado / machined long weld neck flange |
| Rango de tamaño | DN15 – DN1500 (1/2 pulgada – 60 pulgada) |
| Clase de presión | Clase 150 – 2500 / PN10 – PN100 |
| Cara de sellado | RF, FF, RTJ, TG, MFM |
| Tratamiento superficial | Decapado, pasivación, acabado mecanizado, protective oil, custom preservation for export |
| Estándar | ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS, GB 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 following chemical composition is for reference for Hastelloy B2 forged material. Actual values may vary slightly by mill heat, product form and applicable specification. Final chemical composition shall comply with ASTM requirements and be confirmed by the material test certificate and project inspection documents supplied with the order.
| Elemento | do | Y | Minnesota | PAG | S | cr | En | Mes | Otro |
|---|---|---|---|---|---|---|---|---|---|
| Contenido % | 0.02 máximo | 0.10 máximo | 1.00 máximo | 0.04 máximo | 0.03 máximo | 1.00 máximo | Balance | 26.0-30.0 | fe 2.0 máximo, Co 1.0 máximo |
Propiedades mecánicas
Mechanical properties shown below are typical reference values for Hastelloy B2 and project-specified equivalent forged alloy grades. Actual results may vary according to heat treatment condition, section thickness and manufacturing route. Final acceptance values should be based on the applicable ASTM material standard, purchase specification and certified test reports.
| Calificación | Resistencia a la tracción | Fuerza de producción | Alargamiento | Dureza | Densidad |
|---|---|---|---|---|---|
| Hastelloy B2 / UNS N10665 | 760 MPa | 350 MPa | 40% mín. | 100 HRB max | 9.24 g/cm3 |
| Alloy B2 Forged Condition | 750 MPa | 340 MPa | 40% mín. | 100 HRB max | 9.24 g/cm3 |
Tabla de tamaños comunes
| Rango de tamaño | Clase de presión | Cara de sellado | Material | Disponibilidad |
|---|---|---|---|---|
| DN15 – DN50 | Clase 150 – 600 | RF | Hastelloy B2 / UNS N10665 | Existencias / Producción |
| DN65 – DN300 | Clase 150 – 1500 | RF / RTJ | Hastelloy B2 / UNS N10665 | Existencias / Producción |
| DN350 – DN600 | Clase 150 – 2500 | RF / RTJ | Hastelloy B2 / UNS N10665 | Producción |
| DN700 – DN1500 | Clase 150 – 900 | RF | Hastelloy B2 / UNS N10665 | Hecho a pedido |
Comparación de diferentes especificaciones
| Tipo | Descripción | Uso típico |
|---|---|---|
| ASME Long Weld Neck Flange | Extended hub flange machined to ASME dimensions with butt weld end for vessel or nozzle transition | Recipientes a presión, high-stress nozzles, process piping |
| RTJ Long Weld Neck Flange | Long weld neck flange with ring type joint groove for high-pressure sealing service | High-pressure chemical lines, reactor connections, refinery units |
| RF Long Weld Neck Flange | Raised face version suitable for standard gasketed joints and corrosive process systems | General corrosive service, pump and equipment connections |
| Custom Forged Long Weld Neck Flange | Project-made flange produced to vessel neck dimensions, wall thickness and drilling pattern | EPC projects, pressure vessel fabrication, custom skids |
Normas equivalentes y nombres internacionales
Long weld neck flange dimensional standards differ by region, while the alloy grade is normally specified by ASTM or UNS designation for international procurement. Hastelloy B2 is commonly ordered as UNS N10665 forged material and manufactured to the required flange standard, drilling pattern and facing type according to project documentation.
| Estándar / Región | Código estándar | Grado típico / Equivalente |
|---|---|---|
| EE.UU | ASME B16.5 | ASTM B564 UNS N10665 / Hastelloy B2 |
| Europa | EN 1092-1 | UNS N10665 nickel alloy to project specification |
| Alemania | DIN 2527 / 2566 | Hastelloy B2 equivalent alloy by drawing or material callout |
| Japón | JIS B2220 | UNS N10665 forged nickel alloy flange |
| Porcelana | GB/T 9119 | NS3202 / UNS N10665 project equivalent |
Flujo del proceso de producción
SASA FLANGE controls each manufacturing stage from raw material verification to final packing to ensure dimensional accuracy, alloy integrity and complete traceability for Hastelloy B2 long weld neck flanges used in demanding corrosive service.
- 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 | Solution annealing and controlled cooling for nickel alloy stability | 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 composition inspection is carried out on the Hastelloy B2 raw material and, donde sea necesario, on the finished flange to verify compliance with UNS N10665 requisitos. Key elements such as nickel, molibdeno, cromo, iron and carbon are checked against ASTM limits. This process helps confirm corrosion-resistant performance and prevents off-grade alloy substitution in critical project supply.
2. Pruebas de propiedades mecánicas
Mechanical properties testing verifies that forged Hastelloy B2 material achieves the specified tensile strength, límite elástico, elongation and hardness after heat treatment. Test samples are reviewed according to relevant ASTM requirements or project specifications. These tests confirm the flange has sufficient structural integrity for pressure-retaining service, welded assemblies and demanding nozzle or vessel connections.
3. Inspección dimensional
Dimensional inspection covers outside diameter, aburrir, hub length, long neck profile, espesor, círculo de pernos, bolt hole diameter and facing geometry. Raised face or RTJ groove dimensions are checked carefully to ensure gasket compatibility and correct assembly. This inspection is especially important for long weld neck flanges used on vessels and equipment where transition dimensions must match design drawings precisely.
4. Pruebas PMI y pruebas hidrostáticas
PMI testing is performed using portable analyzers to confirm the alloy identity of Hastelloy B2 before shipment. Cuando se especifica, hydrostatic or assembly pressure testing is arranged to verify pressure integrity in finished systems or special fabricated components. SASA FLANGE puede proporcionar EN 10204 3.1 certificado, material test reports, inspection records and traceable heat numbers with the delivered flanges.
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
Hastelloy B2 long weld neck flanges are selected for corrosive process systems where excellent resistance to reducing acids and reliable structural reinforcement are required. Their long tapered hub makes them suitable for critical nozzle and vessel connections in industries that demand alloy integrity, dimensional precision and documented traceability.
| Industria | Aplicaciones típicas | Por qué se utiliza este producto |
|---|---|---|
| Petróleo y gas | Acid injection systems, specialty chemical lines, offshore process modules | Provides corrosion resistance in aggressive media and strong reinforcement for critical welded connections |
| Procesamiento químico | Hydrochloric acid service, reactors, evaporators, storage and transfer piping | Hastelloy B2 offers excellent resistance to reducing environments and low carbon content supports weldability |
| Generación de energía | FGD auxiliary systems, chemical dosing skids, specialty boiler island services | Used where alloy durability and pressure boundary reliability are needed in corrosive auxiliary systems |
| Tratamiento de agua | Chemical dosing plants, acid regeneration units, demineralization support systems | Suitable for severe chemical handling duties where standard stainless steel may not perform adequately |
| Marino y Offshore | Offshore chemical injection, topside process piping, FPSO specialty service lines | Combines corrosion-resistant alloy performance with long neck geometry for robust nozzle and piping transitions |
¿Por qué elegir? SASA FLANGE?
- ✓Professional manufacturer of Long 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 Hastelloy B2 long weld neck flange?
A: A Hastelloy B2 long weld neck flange is a forged nickel-molybdenum alloy flange with an extended tapered hub designed for high-stress welded connections. It is commonly used on pressure vessels, columnas, reactors and critical piping systems. The long neck improves stress distribution and makes it suitable for corrosive service involving reducing acids and demanding process conditions.
q: What materials are available for Hastelloy B2 long weld neck flanges?
A: The main material is ASTM B564 UNS N10665, commonly known as Hastelloy B2. For project requirements, SASA FLANGE can also discuss equivalent nickel alloy grades or related corrosion-resistant forged materials based on application conditions, design code and client drawings. Material selection depends on process chemistry, temperatura, pressure and required certification for the final installation.
q: ¿Qué clase de presión se admite??
A: SASA FLANGE can supply Hastelloy B2 long weld neck flanges in ASME Class 150, 300, 600, 900, 1500 y 2500, with EN and other regional ratings produced to project requirements. The available class depends on size, design thickness, facing type and forging feasibility. Higher pressure ratings are commonly manufactured as custom items according to approved drawings.
q: Poder SASA FLANGE suministrar tamaños personalizados?
A: Sí. SASA FLANGE supplies custom long weld neck flanges according to client drawings, vessel nozzle dimensions and project standards. We can manufacture non-standard neck lengths, orificios especiales, custom drilling patterns, RTJ or raised face details, special hub transitions and tailored material grades. This is particularly useful for EPC projects, pressure vessels and replacement parts with exact fit requirements.
q: ¿Qué certificado se proporciona??
A: SASA FLANGE proporciona EN 10204 3.1 material certificate with heat number traceability for Hastelloy B2 long weld neck flanges. Supporting documentation can include chemical analysis, mechanical test results, dimensional inspection records and PMI reports. Hydrostatic testing or additional third-party inspection can also be arranged when specified by the purchase order, contract documents or project quality plan.
Contáctenos
If you are looking for hastelloy b2 flanges 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
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- ☎️ Teléfono: +86 21 52236361
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