Descrição
Corrosion-resistant forged piping component
ASTM A182 F316L Weld Neck Flange
A low-carbon, molybdenum-bearing stainless steel weld neck flange engineered for full-penetration butt-welded joints in chemical, marinho, energy and hygienic process piping.
What is an F316L weld neck flange?
Um ASTM A182 Flange de pescoço de solda F316L is a forged austenitic stainless steel pipe flange with a tapered hub and a butt-weld end. The hub transfers stress gradually from the flange into the pipe, while the full-penetration weld provides a strong, inspectable joint for pressure and temperature cycling.
F316L is the low-carbon version of F316. Its maximum carbon content helps reduce the risk of sensitization during welding, while chromium, nickel and molybdenum provide better resistance to pitting and crevice corrosion than 304-series stainless steel in many process environments.
F316L weld neck flange specifications
| Produto | Forged weld neck flange / Flange WN / WNRF or WNRTJ |
|---|---|
| Material ASTM | ASTM A182 F316L |
| Designações de materiais | UNS S31603; comumente referenciado com EN 1.4404 / X2CrNiMo17-12-2 |
| Padrão norte-americano | ASME B16.5 |
| Opção europeia | EN 1092-1 Tipo 11, fornecido de acordo com o material solicitado e especificação do projeto |
| Tamanho nominal | ASME: NPS 1/2–24; EN: DN15–DN600; larger project sizes available subject to drawing review |
| Classificação de pressão | Classe ASME 150, 300, 400, 600, 900, 1500 e 2500 within the size limits of the standard; EN PN6–PN100 |
| Enfrentando | Rosto levantado (RF), Junta tipo anel (RTJ), Rosto plano (FF) or project-specific finish |
| Furo / cronograma de parede | Machined to match the specified pipe OD and wall schedule, including Sch 10S, 40S, 80S and heavier walls |
| Documentos de inspeção | EN 10204 3.1 certificado de material, relatório dimensional, Relatório PMI e testes adicionais conforme solicitado |
Dimensões finais, pressure-temperature rating and material acceptance criteria follow the ordered standard, edition and project specification.
ASME B16.5 e PT 1092-1 supply options
Para projetos norte-americanos
Especificar ASTM A182 F316L, ASME B16.5 tamanho e classe, cronograma de tubulação, tipo de revestimento, surface finish and required inspection. Typical descriptions include “2 in Class 300 WNRF, bore for Sch 40S.”
Para projetos europeus
Especificar EN 1092-1 Tipo 11, Classificação DN e PN, face de vedação, pipe dimensions and the required European material designation, comumente 1.4404 for 316L applications.
F316L vs F316 weld neck flange
| Ponto de seleção | F316L | F316 |
|---|---|---|
| Carbon limit | Lower carbon, 0.030% maximum | Higher permitted carbon limit |
| Primary benefit | Reduced sensitization risk during welding | May provide slightly higher strength in some conditions |
| Typical choice | Welded process piping and corrosive service | Service selected by the governing design and material specification |
Aplicações típicas
| Indústria | Serviço típico | Why F316L is selected |
|---|---|---|
| Processamento químico | Linhas de processo, sistemas solventes, conexões do reator | Corrosion resistance and reliable welded joints |
| Óleo, gas and refining | Utility piping, derrapagens, selected corrosive streams | Força, traceability and pressure-class availability |
| Tratamento marinho e de água | Treatment equipment, desalination auxiliaries, conexões da bomba | Better chloride resistance than 304-series grades for suitable design conditions |
| Alimentos e farmacêuticos | Clean utilities and process equipment connections | Cleanable stainless surface and low-carbon weldability |
| Power and industrial plants | Água de resfriamento, auxiliaries and process utility lines | Tapered-hub stress distribution and long service life |
Fabricação, inspeção e documentação
SASA FLANGE supplies F316L weld neck flanges with identification linked to the raw-material heat number. The production route can include forging, tratamento térmico em solução, Usinagem CNC, enfrentando, perfuração, limpeza, final inspection and export packing according to the purchase order.
Revisão do CTM, controle de número de calor e PMI quando especificado.
DE, grossura, eixo, chato, círculo de parafuso, buracos e revestimento.
PT, UT, dureza ou inspeção de terceiros conforme solicitado.
EN 10204 3.1 certificate and inspection records per PO.
Informações necessárias para uma cotação rápida
- Padrão e edição
- Grau do material
- Tamanho nominal / DN
- Classificação de classe ou PN
- Cronograma de tubulação / chato
- Revestimento e acabamento superficial
- Quantidade
- Inspeção e certificação
Perguntas frequentes
What is the material designation for an F316L weld neck flange?
The ASTM designation is ASTM A182 F316L and the UNS number is S31603. EN 1.4404 is commonly used for comparable European 316L applications, but the ordered standard and acceptance criteria should always be stated explicitly.
Which ASME sizes and pressure classes are available?
ASME B16.5 covers weld neck flanges from NPS 1/2 através do NPS 24. Common ratings are Class 150, 300, 400, 600, 900 e 1500; Aula 2500 applies within the smaller size range defined by the standard.
Can the flange bore match a specific pipe schedule?
Sim. The weld end and bore can be machined to match the ordered pipe outside diameter and wall schedule. Include the pipe specification and schedule in the RFQ to ensure correct weld preparation and alignment.
What is the difference between RF and RTJ facing?
A raised face uses a flat gasket contact area above the flange face. An RTJ flange has a precision-machined groove for a metallic ring gasket and is commonly specified for more severe pressure and temperature service. O flange correspondente, gasket and facing must be compatible.
Quais certificados podem ser fornecidos?
A documentação típica inclui um EN 10204 3.1 certificado de material, rastreabilidade do número de calor e relatório de inspeção dimensional. PMI, PT, UT, hardness testing and third-party inspection can be arranged when included in the order requirements.
Request an F316L weld neck flange quotation
Envie seu tamanho, classe ou classificação PN, cronograma de tubulação, enfrentando, quantity and documentation requirements. SASA FLANGE will review the specification and return a project-specific quotation.
