وصف
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, البحرية, energy and hygienic process piping.
What is an F316L weld neck flange?
ان ASTM A182 شفة عنق اللحام 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
| منتج | Forged weld neck flange / شفة WN / WNRF or WNRTJ |
|---|---|
| مادة أستم | ASTM A182 F316L |
| تسميات المواد | UNS S31603; عادة ما يتم الرجوع إليها مع EN 1.4404 / X2CrNiMo17-12-2 |
| North American standard | ASME B16.5 |
| European option | EN 1092-1 يكتب 11, supplied to the ordered material and project specification |
| الحجم الاسمي | ASME: مصادر القدرة النووية 1/2–24; EN: DN15–DN600; larger project sizes available subject to drawing review |
| تصنيف الضغط | فئة ASME 150, 300, 400, 600, 900, 1500 و 2500 within the size limits of the standard; EN PN6–PN100 |
| مواجهة | وجه مرفوع (الترددات اللاسلكية), نوع الحلقة المشتركة (آر تي جيه), وجه مسطح (FF) or project-specific finish |
| تتحمل / جدول الحائط | Machined to match the specified pipe OD and wall schedule, including Sch 10S, 40س, 80S and heavier walls |
| وثائق التفتيش | EN 10204 3.1 شهادة المواد, تقرير الأبعاد, PMI report and additional testing as ordered |
الأبعاد النهائية, pressure-temperature rating and material acceptance criteria follow the ordered standard, edition and project specification.
ASME B16.5 و إن 1092-1 supply options
For North American projects
تحديد ASTM A182 F316L, ASME B16.5 الحجم والطبقة, جدول الأنابيب, نوع المواجهة, surface finish and required inspection. Typical descriptions include “2 in Class 300 WNRF, bore for Sch 40S.”
للمشاريع الأوروبية
تحديد EN 1092-1 يكتب 11, DN and PN rating, وجه الختم, pipe dimensions and the required European material designation, عادة 1.4404 for 316L applications.
F316L vs F316 weld neck flange
| نقطة الاختيار | 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 |
تطبيقات نموذجية
| صناعة | خدمة نموذجية | Why F316L is selected |
|---|---|---|
| المعالجة الكيميائية | Process lines, أنظمة المذيبات, reactor connections | Corrosion resistance and reliable welded joints |
| زيت, gas and refining | Utility piping, skids, selected corrosive streams | قوة, traceability and pressure-class availability |
| المعالجة البحرية والمياه | Treatment equipment, desalination auxiliaries, pump connections | Better chloride resistance than 304-series grades for suitable design conditions |
| Food and pharmaceutical | Clean utilities and process equipment connections | Cleanable stainless surface and low-carbon weldability |
| Power and industrial plants | Cooling water, auxiliaries and process utility lines | Tapered-hub stress distribution and long service life |
تصنيع, التفتيش والتوثيق
SASA FLANGE supplies F316L weld neck flanges with identification linked to the raw-material heat number. The production route can include forging, المعالجة الحرارية الحل, التصنيع باستخدام الحاسب الآلي, تواجه, حفر, تنظيف, final inspection and export packing according to the purchase order.
مراجعة شركة إم تي سي, heat-number control and PMI when specified.
ل, سماكة, مَركَز, تتحمل, دائرة الترباس, holes and facing.
حزب العمال, يوتا, hardness or third-party inspection as ordered.
EN 10204 3.1 certificate and inspection records per PO.
Information required for a fast quotation
- Standard and edition
- درجة المادة
- الحجم الاسمي / الاسم المميز
- Class or PN rating
- Pipe schedule / تتحمل
- Facing and surface finish
- كمية
- Inspection and certification
الأسئلة المتداولة
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 من خلال مصادر القدرة النووية 24. Common ratings are Class 150, 300, 400, 600, 900 و 1500; فصل 2500 applies within the smaller size range defined by the standard.
Can the flange bore match a specific pipe schedule?
نعم. 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. The mating flange, gasket and facing must be compatible.
Which certificates can be supplied?
تتضمن الوثائق النموذجية EN 10204 3.1 شهادة المواد, heat-number traceability and dimensional inspection report. مؤشر مديري المشتريات, حزب العمال, يوتا, hardness testing and third-party inspection can be arranged when included in the order requirements.
Request an F316L weld neck flange quotation
أرسل مقاسك, class or PN rating, جدول الأنابيب, تواجه, quantity and documentation requirements. SASA FLANGE will review the specification and return a project-specific quotation.
