Keterangan
Detil Produk
A duplex welding neck flange is a forged flange with a long tapered hub that is butt welded to pipe, providing smooth flow transition, strong joint integrity and excellent resistance to pressure, temperature fluctuation and cyclic loading. Duplex and super duplex grades combine high mechanical strength with superior resistance to chloride stress corrosion cracking, korosi pitting dan celah, making them suitable for offshore, subsea, desalinasi, chemical and power piping systems.
SASA FLANGE supplies duplex welding neck flanges in standard and customized sizes according to ASME B16.5, ASME B16.47, EN 1092-1, DIN, Persyaratan JIS dan GB. Setiap batch dapat didukung dengan analisis kimia, pengujian mekanis, pemeriksaan dimensi, pengujian PMI, EN 10204 3.1 certificate and full heat number traceability to meet project and end-user specifications.
- ✓Nama Produk: Duplex Welding Neck Flange
- ✓Kelas Bahan: ASTM A182 F51, F53, F55, F60, F61
- ✓Jenis Produk: Forged Weld Neck Flange
- ✓Fitur Utama: Kekuatan tinggi, butt weld connection, excellent chloride and seawater corrosion resistance
- ✓Aplikasi: Minyak dan gas, di lepas pantai, pemrosesan kimia, desalinasi, power generation and water treatment
Parameter Produk
| Nama Produk | Duplex Welding Neck Flange |
| Kelas Bahan | ASTM A182 F51, F53, F55, F60, F61 |
| Jenis Bahan | Baja Tahan Karat Dupleks / Super Duplex Stainless Steel |
| Formulir Produk | Forged Weld Neck Flange with tapered hub and butt weld end |
| Rentang Ukuran | DN15 – DN1500 (1/2 inci – 60 inci) |
| Kelas Tekanan | Kelas 150 – 2500 / PN10 – PN160 |
| Menyegel Wajah | Federasi Rusia, FF, RTJ, PT, MFM |
| Perawatan Permukaan | Mesin alami, pengawetan, pasif, face protection, anti-rust oil on carbon steel contact areas if required |
| Standar | ASME B16.5, ASME B16.47 Seri A/B, EN 1092-1, DIN, JIS B2220, GB/T 9119 atau spesifikasi pelanggan |
| Inspeksi | Analisis Kimia, Uji Mekanik, Tes PMI, Dimensi, Hidrostatik |
| Sertifikat | EN 10204 3.1 Sertifikat Bahan tersedia |
| Layanan Pemrosesan | Pemotongan, Pemesinan CNC, Pengeboran Khusus, Pemrosesan Ukuran Khusus |
Komposisi Kimia
Typical chemical composition shown below is for reference for common duplex grade ASTM A182 F51 / UNS S31803-S32205. Final composition depends on the ordered grade, applicable standard and mill test certificate. For project orders, SASA FLANGE verifies chemistry through raw material certification and positive material identification before shipment.
| Elemen | C | Dan | M N | P | S | Kr | Di dalam | Mo | Lainnya |
|---|---|---|---|---|---|---|---|---|---|
| Isi % | 0.03 maks | 1.00 maks | 2.00 maks | 0.03 maks | 0.02 maks | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | N 0.14-0.20 |
Sifat Mekanik
Mechanical properties below are typical reference values for annealed duplex and super duplex forging materials used for weld neck flanges. Actual values can vary by grade, kondisi perlakuan panas, product thickness and standard requirements. Final certified values are confirmed by test reports and EN 10204 3.1 sertifikat materi.
| Nilai | Kekuatan Tarik | Kekuatan Hasil | Pemanjangan | Kekerasan | Kepadatan |
|---|---|---|---|---|---|
| ASTM A182 F51 | 620 MPa min | 450 MPa min | 25% menit | 290HB maks | 7.80 gram/cm3 |
| ASTM A182 F55 | 795 MPa min | 550 MPa min | 15% menit | 310HB maks | 7.80 gram/cm3 |
Tabel Ukuran Umum
| Rentang Ukuran | Kelas Tekanan | Menyegel Wajah | Bahan | Tersedianya |
|---|---|---|---|---|
| DN15 – DN50 | Kelas 150 – 600 | Federasi Rusia | A182 F51 / F60 | Saham / Produksi |
| DN65 – DN300 | Kelas 150 – 1500 | Federasi Rusia / RTJ | A182 F51 / F53 / F55 | Saham / Produksi |
| DN350 – DN600 | Kelas 150 – 2500 | Federasi Rusia / RTJ | A182 F51 / F55 | Produksi |
| DN700 – DN1500 | Kelas 150 – 900 | Federasi Rusia | A182 F51 / F53 / F55 | Dibuat Sesuai Pesanan |
Perbandingan Spesifikasi Berbeda
| Jenis | Keterangan | Penggunaan Khas |
|---|---|---|
| ASME Weld Neck Flange | Forged flange with tapered hub and butt weld end manufactured to ASME B16.5 atau dimensi B16.47 | Minyak dan gas, kilang minyak, petrochemical and high-pressure process lines |
| EN Welding Neck Flange Type 11 | European standard welding neck flange produced to EN 1092-1 with PN rating system | Pengolahan air, tanaman kimia, utility and industrial pipe systems in Europe |
| RTJ Duplex Weld Neck Flange | Ring type joint face for high-pressure sealing performance in critical duty service | Di lepas pantai, high-pressure injection, gas processing and severe service pipelines |
| Custom Duplex Weld Neck Flange | Non-standard dimensions, pengeboran, bore or facing produced according to drawing or project specification | Skid packages, peralatan oem, replacement flanges and special engineered systems |
Standar Setara dan Nama Internasional
Duplex welding neck flanges are supplied to international dimensional standards, while the material grade is specified separately according to forging standards such as ASTM A182. Penamaan yang setara mungkin berbeda di setiap wilayah, but common duplex grades include 2205 dan super dupleks 2507. SASA FLANGE can match project specifications across American, Eropa, Japanese and Chinese systems.
| Standar / Wilayah | Kode Standar | Kelas Khas / Setara |
|---|---|---|
| Amerika Serikat | ASME B16.5 | ASTM A182 F51 / F53 / F55 |
| Eropa | EN 1092-1 | 1.4462 / 1.4410 |
| Jerman | DIN 2633 / 2635 / 2637 | X2CrNiMoN22-5-3 / X2CrNiMoN25-7-4 |
| Jepang | JIS B2220 | SUS329J3L / duplex equivalent by project specification |
| Cina | GB/T 9119 | 022Cr22Ni5Mo3N / 022Cr25Ni7Mo4N |
Alur Proses Produksi
Strict manufacturing control is essential for duplex stainless steel flanges to maintain phase balance, corrosion resistance and dimensional accuracy. SASA FLANGE monitors each production stage from raw material verification to final marking and export packing.
- 1. Pemilihan Bahan Baku
- 2. Penempaan / Pemotongan
- 3. Perlakuan Panas
- 4. Pemesinan Kasar
- 5. Selesaikan Pemesinan
- 6. Pengeboran
- 7. Perawatan Permukaan
- 8. Inspeksi
- 9. Menandai
- 10. Sedang mengemas
- 11. Pengiriman
| Langkah Proses | Keterangan | Titik Kendali Mutu |
|---|---|---|
| Bahan mentah | Pilih billet atau pelat tempa bersertifikat | Sertifikat material dan ketertelusuran |
| Penempaan | Penempaan panas untuk mencapai bentuk yang dibutuhkan | Suhu penempaan dan rasio reduksi |
| Perlakuan Panas | Solution annealing and rapid cooling as required for duplex grades | Kontrol suhu dan waktu penahanan |
| permesinan | Menyegel wajah, lubang baut, ukuran | Keakuratan dimensi dan penyelesaian permukaan |
| Inspeksi | Inspeksi akhir sebelum pengiriman | Dimensi, permukaan, PMI, hidrostatik |
Inspeksi Produk
1. Pemeriksaan Komposisi Kimia
Chemical analysis is performed to confirm that chromium, nikel, molibdenum, nitrogen, karbon, sulfur and phosphorus meet the specified duplex or super duplex grade. This verification is based on raw material certificates and can be cross-checked by spectrometer analysis to ensure corrosion resistance and compliance with ASTM A182 dan persyaratan proyek.
2. Pengujian Sifat Mekanik
Pengujian mekanis memverifikasi kekuatan tarik, kekuatan hasil, elongation and hardness of the forging material after proper heat treatment. These tests help confirm that the duplex welding neck flange has the required strength for high-pressure service while maintaining suitable ductility for fabrication, welding and long-term performance in aggressive industrial environments.
3. Inspeksi Dimensi
Each flange is checked for outside diameter, ketebalan, dimensi hub, ukuran lubang, lingkaran baut, bolt hole quantity, hole diameter and raised face or RTJ profile. Dimensional inspection ensures full conformity with ASME, EN, DIN, JIS or GB standards so the flange fits correctly with mating pipe, gasket and bolting assemblies at site.
4. Pengujian PMI dan Pengujian Hidrostatis
Pengujian PMI tersedia untuk mengonfirmasi identitas paduan dan mencegah tercampurnya material, which is critical for duplex stainless steel service. Hydrostatic or system pressure testing can be arranged according to order requirements. SASA FLANGE menyediakan EN 10204 3.1 sertifikat materi, inspection records and traceable heat numbers for reliable project documentation and quality assurance.
Kemasan Produk
- ✓Kemasan Kotak Kayu: Cocok untuk produk bertekanan tinggi dan berdiameter besar
- ✓Pengepakan Palet dengan Shrink Wrap: Cocok untuk pengiriman batch dan ukuran standar
- ✓Lapisan Minyak Anti Karat + Kertas Tahan Air: Digunakan untuk perlindungan angkutan laut
- ✓Kantong Plastik Individu + Karton: Digunakan untuk perlengkapan kecil dan produk berulir
- ✓Hapus Penandaan: Nilai, ukuran, kelas tekanan, nomor panas dan nomor PO
Aplikasi
Duplex welding neck flanges are widely used where high strength and corrosion resistance are required at the same time. They are especially suitable for chloride-bearing, seawater and aggressive process media, where conventional stainless steel or carbon steel flanges may have reduced service life or higher maintenance requirements.
| Industri | Aplikasi Khas | Mengapa Produk Ini Digunakan |
|---|---|---|
| Minyak dan Gas | Proses perpipaan, sistem air terproduksi, injection lines, topside modules and refinery units | Kekuatan tinggi, pressure resistance and excellent resistance to chloride corrosion and SCC |
| Pengolahan Kimia | Jalur penanganan asam, reaktor, storage transfer lines and corrosive chemical piping | Good pitting and crevice corrosion resistance with reliable welded joint performance |
| Pembangkit Listrik | sistem FGD, cooling water lines, condensate systems and auxiliary process piping | Durable performance under pressure, temperature variation and corrosive media exposure |
| Pengolahan Air | Pabrik desalinasi, seawater intake, RO skids and brine handling pipelines | Duplex grades perform well in seawater and high-chloride service environments |
| Kelautan dan Lepas Pantai | Perpipaan kapal, platform lepas pantai, subsea support systems and firewater lines | Ketahanan korosi yang kuat, long service life and reduced maintenance in marine atmosphere |
Mengapa Memilih SASA FLANGE?
- ✓Professional manufacturer of Weld Neck Flange for global industrial projects
- ✓Ukuran yang disesuaikan, kelas tekanan dan kelas material sesuai gambar
- ✓Dukungan standar penuh: ASME, EN, DIN, JIS, GB, Spesifikasi gost dan pelanggan
- ✓Ketertelusuran material dengan kontrol nomor panas dan EN 10204 3.1 sertifikat materi
- ✓Analisis kimia, pengujian mekanis, pengujian PMI, pemeriksaan hidrostatik dan dimensi
- ✓Ketersediaan stok untuk barang standar, waktu tunggu 3-7 hari; produksi khusus 15-30 hari
- ✓Kemasan kelas ekspor untuk laut, transportasi udara dan darat
- ✓15+ pengalaman bertahun-tahun memasok 50+ negara-negara di seluruh dunia
Pertanyaan Umum
Q: What is a duplex welding neck flange?
A: A duplex welding neck flange is a forged flange with a long tapered hub and butt weld end, manufactured from duplex stainless steel. It is designed to provide strong mechanical performance, smooth flow transition and reliable sealing in high-pressure or corrosive piping systems. It is commonly used in offshore, kimia, desalination and process plant applications.
Q: What materials are available for duplex welding neck flanges?
A: SASA FLANGE supplies duplex and super duplex forged grades including ASTM A182 F51, F60, F53, F55 and F61. Equivalent material designations such as 2205 Dan 2507 can also be supported depending on project requirements. Pemilihan bahan tergantung pada kadar klorida, tekanan desain, temperature and corrosion allowance required by the final service condition.
Q: Kelas tekanan apa yang didukung?
A: Duplex welding neck flanges can be supplied in ASME Class 150, 300, 600, 900, 1500 Dan 2500, as well as EN PN10 to PN160 depending on standard and size. Untuk diameter lebih besar, ASME B16.47 Series A or B is available. The correct class should match the pipeline design pressure, temperature and gasket arrangement.
Q: Bisa SASA FLANGE menyediakan ukuran khusus?
A: Ya. SASA FLANGE can manufacture custom duplex welding neck flanges according to drawings or project specifications, including non-standard bore, wall match, dimensi hub, pola pengeboran, facing type and special material grades. Federasi Rusia, FF, RTJ and other sealing faces can be machined, and PMI plus dimensional reports can be included for critical orders.
Q: Sertifikat apa yang diberikan?
A: Pasokan standar dapat mencakup EN 10204 3.1 sertifikat material dengan ketertelusuran nomor panas penuh. Additional documentation may include raw material MTC, chemical composition report, mechanical test report, laporan inspeksi dimensi dan catatan PMI. Hydrostatic or third-party inspection can also be arranged according to project, end-user or EPC documentation requirements.
Hubungi kami
If you are looking for flange duplex welding neck or related custom flange products, silakan hubungi SASA FLANGE dengan ukuran yang Anda butuhkan, kelas tekanan, kelas materi, standar, perawatan permukaan, kuantitas dan persyaratan inspeksi. Tim kami akan memberikan solusi teknis profesional dan penawaran harga kompetitif di dalamnya 24 jam.
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