وصف
Duplex stainless steel forged pipe flange
ASTM A182 دوبلكس F51 2205 شفة الرقبة اللحام
A high-integrity WN flange combining the strength and chloride-corrosion resistance of Duplex 2205 with a tapered hub and full-penetration butt-weld connection.
ما هو ASTM A182 F51 weld neck flange?
ان ASTM A182 F51 weld neck flange is a forged Duplex 2205 piping component with a long tapered hub and a butt-weld end. The hub transfers mechanical stress gradually into the pipe, while the full-penetration weld supports demanding pressure, درجة حرارة, vibration and cyclic-service requirements.
F51 is the ASTM A182 grade associated with UNS S31803 الفولاذ المقاوم للصدأ على الوجهين. Its ferritic-austenitic microstructure provides higher yield strength than common 300-series austenitic stainless steels and useful resistance to chloride pitting, تآكل الشق وتكسير التآكل الإجهادي. Final suitability depends on temperature, مستوى الكلوريد, الرقم الهيدروجيني, تلفيق, welding procedure and the governing piping code.
Pictured production item
The product photographs show a 2 in weld neck flange with a Schedule 10 تتحمل, manufactured to ASME B16.5, فصل 150, وجه مسطح (FF). The edge marking identifies F51 and S31803/S32205, and the PMI photograph documents an on-site alloy identification check.
Photographs document this production item only. Each order is manufactured and accepted against the purchase order, الرسم المعتمد, applicable standard and material certificate.
دوبلكس F51 2205 WN flange specifications
| نوع المنتج | Forged Weld Neck flange / ون / WNRF / WNRTJ / WNFF |
|---|---|
| ASTM grade | ASTM A182 F51 |
| تسمية الولايات المتحدة | UNS S31803; UNS S32205 only where the ordered chemistry, mechanical properties and certification support it |
| معايير الأبعاد | ASME B16.5; ASME B16.47 للأقطار الكبيرة المطبقة; EN 1092-1 يكتب 11 عند الطلب |
| الحجم الاسمي | مصادر القدرة النووية 1/2 من خلال مصادر القدرة النووية 24 تحت ASME B16.5; larger sizes and EN dimensions subject to specification review |
| فئة الضغط | فئة ASME 150, 300, 400, 600, 900, 1500 و 2500 within the type and size limits of the selected standard |
| مواجهة | وجه مرفوع (الترددات اللاسلكية), نوع الحلقة المشتركة (آر تي جيه), وجه مسطح (FF) أو مواجهة خاصة بالرسم |
| تتحمل ونهاية اللحام | Machined for the ordered pipe OD, wall schedule and weld preparation |
| Typical documentation | EN 10204 3.1 إم تي سي, إمكانية تتبع رقم الحرارة, dimensional report and PMI report |
| التفتيش الاختياري | حزب العمال, يوتا, فحص الفريت, اختبار التآكل, third-party inspection and additional project tests when ordered |
أبعاد, تقييمات الضغط ودرجة الحرارة, test requirements and acceptance criteria follow the ordered standard edition, material specification and project documents.
F51, S31803 and S32205: how should they be specified?
| Designation | معنى المشتريات | RFQ guidance |
|---|---|---|
| ASTM A182 F51 | Forged duplex grade associated with UNS S31803 | State F51 and the required UNS designation on the purchase order |
| UNS S31803 | Original 2205 composition range with broader nitrogen and alloy limits | Use when the project specifically calls for S31803/F51 |
| UNS S32205 | Tighter 2205 chemistry commonly ordered under ASTM A182 F60 | Specify F60/S32205 or an approved dual-certified requirement rather than assuming equivalence |
تطبيقات نموذجية
انزلاقات العملية, produced-water systems, utility lines and selected corrosive streams.
Seawater auxiliaries, fire-water systems and equipment connections under approved design conditions.
تحلية المياه, brackish-water, filtration and high-chloride treatment systems.
Piping exposed to chloride-bearing water and selected process chemicals.
تصنيع, التفتيش والتتبع
Production can include controlled forging, المعالجة الحرارية الحل, التصنيع باستخدام الحاسب الآلي, حفر, gasket-face finishing, تنظيف, marking and final inspection. للفولاذ المقاوم للصدأ على الوجهين, material identity and heat-treatment control are important because chemistry alone does not confirm the required phase balance or mechanical performance.
إمكانية تتبع رقم الحرارة, MTC review and PMI as specified.
ل, سماكة, مَركَز, تتحمل, دائرة الترباس, bolt holes and facing.
Ferrite, corrosion or additional metallurgical testing when ordered.
EN 10204 3.1 certificate and project inspection records.
Information needed for quotation
- درجة ASTM وتسمية UNS
- معيار الأبعاد والإصدار
- حجم الأنبوب الاسمي
- فئة الضغط أو تصنيف PN
- Pipe schedule and bore
- تواجه النوع والانتهاء
- وجهة الكمية والتسليم
- اختبار, certification and inspection
الأسئلة المتداولة
يكون ASTM A182 F51 a super duplex grade?
لا. F51/S31803 is normally classified as Duplex 2205. Super duplex usually refers to higher-alloy grades such as ASTM A182 F53/UNS S32750 or F55/UNS S32760. The product must be described by its exact ASTM and UNS designation.
Are S31803 and S32205 the same material?
Both are commonly called Duplex 2205, but S32205 has tighter chemistry limits and is commonly associated with ASTM A182 F60. A dual-certified flange must satisfy the chemistry, mechanical and certification requirements stated in the purchase order.
Which ASME sizes and classes can be supplied?
ASME B16.5 covers weld neck flanges from NPS 1/2 من خلال مصادر القدرة النووية 24 across the pressure classes and size limits defined by the standard. ASME B16.47 options can be reviewed for applicable larger diameters.
Can the flange bore match a specific pipe schedule?
نعم. The bore and weld end are machined to the ordered pipe OD and wall schedule. Include the pipe specification, schedule and any required transition detail in the RFQ.
ما هي وثائق التفتيش المتاحة?
تتضمن الوثائق النموذجية EN 10204 3.1 شهادة المواد, إمكانية تتبع رقم الحرارة, dimensional report and PMI report. حزب العمال, يوتا, الفريت, corrosion testing and third-party inspection can be arranged when specified before manufacture.
طلب دوبلكس 2205 weld neck flange quotation
Send the grade, تسمية الولايات المتحدة, مقاس, فصل, جدول, تواجه, quantity and inspection requirements for a specification review and project quotation.
