Forged RTJ flange with machined ring groove

Yüksek Sıcaklık Enerji Santrali Projesi İçin Üretilen F91 RTJ Flanşları

Proje HaberleriYayınlandı: 3 Ağustos 2026SASA FLANGE Proje Ekibi
Proje tamamlandı

ASTM A182 F91 ring type joint flanges were manufactured for a high-temperature power plant piping package. The order combined controlled material condition with RTJ groove inspection, PMI, ultrasonic examination, hardness testing and documented dimensional release.

Proje anlık görüntüsü

Proje durumu Manufacturing and final inspection completed
Malzeme ASTM A182 F91 forged alloy steel
Flanş tipi Weld neck RTJ
Standart ASME B16.5
Basınç sınıfı Sınıf 900
Boyut aralığı NPS 4–12; project-specific bores and weld ends
Denetleme PMI, UT, sertlik, RTJ groove and dimensional inspection
Başvuru High-temperature power generation piping

Teslimatın öne çıkanları

RTJ groove geometry and surface condition were treated as critical sealing characteristics.
Hardness and heat-treatment records were reviewed alongside chemical identity.
Weld ends were matched to the project pipe wall and protected after inspection.

Why F91 required additional production control

F91 is a modified 9Cr-1Mo material whose high-temperature properties depend on the correct normalized-and-tempered condition. Chemistry alone cannot confirm that condition. The production route therefore preserved traceability to heat-treatment and mechanical-property records while preventing uncontrolled thermal exposure during later operations.

The flange hubs and weld ends were machined for the adjoining Grade 91 piping arrangement. Project welding and post-weld heat-treatment requirements remain part of the installed joint design and must be coordinated with the released flange condition.

RTJ groove and NDE verification

The ring groove was checked for profile, derinlik, pitch diameter, finish and freedom from damage. Ring number compatibility was verified from the approved project description. Ultrasonic testing addressed internal discontinuities in the forging, while visual and dimensional inspection covered accessible surfaces and geometry.

PMI, UT and hardness are complementary controls: PMI addresses alloy identity, UT addresses internal soundness and hardness supports verification of the delivered material condition.

Karşılaştırılabilir bir RFQ için gerekli bilgiler

Karşılaştırılabilir bir araştırma, malzeme spesifikasyonunu ve derecesini tam olarak tanımlamalıdır., geçerli standart ve baskı, NPS'ler, basınç sınıfı, flanş tipi, karşı karşıya, delik veya eşleşen boru programı, miktar ve hedef. Bu proje haber kapsamı için, temel referans noktaları şunlardı: ASTM A182 F91 forged alloy steel, Weld neck RTJ, Sınıf 900 Ve NPS 4–12; project-specific bores and weld ends.

Gerekli olanı belirtin EN 10204 sertifika türü, ısı numarası izlenebilirliği, PMI boyutu, sertlik sınırları, boyutlu rapor, NDE yöntemi ve kabul standardı, üçüncü taraf tanık noktaları, Teklif aşamasında paketleme yöntemi ve gerekli teslimat tarihi. Erken tanımlama üretime olanak sağlar, birlikte gözden geçirilecek denetim ve belge programları.

Üretme, inspection and packing photos

Images show the relevant SASA FLANGE production, quality-control and shipment stages used for this project-news report.

Sık sorulan sorular

Can PMI prove that an F91 flange received the correct heat treatment?

HAYIR. PMI checks alloy chemistry. Isıl işlem kayıtları, mechanical properties and hardness provide evidence about material condition.

Why use an RTJ facing in high-pressure power piping?

RTJ joints use a metallic ring and machined groove for demanding pressure and temperature service when specified by the piping design.

Was the F91 flange selected independently of the pipe?

HAYIR. Seviye, delik, weld end, filler metal and field heat-treatment planning must be reviewed as one piping system.

Alaşımlı çelik flanşlar için teklif isteyin

ASTM notunu gönder, standart ve sürüm, NPS'ler, basınç sınıfı, flanş tipi, karşı karşıya, delik veya boru programı, miktar, Teslimat hedefi ve gerekli PMI, ÖYD, sertlik, üçüncü taraf denetimi ve dokümantasyonu.

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