Keterangan
Detil Produk
A long WN flange, also called a long weld neck flange, is a special type of weld neck flange with an extended tapered hub that can act as an integral reinforcement section or nozzle connection. It is widely used in pressure vessels, kolom, reaktor, process piping and high-integrity lines where improved stress distribution, fatigue resistance and reliable butt-weld connection are required. Typical industries include oil and gas, pemrosesan kimia, pembangkit listrik, pengolahan laut dan air.
SASA FLANGE supplies long WN flanges in standard and custom dimensions based on ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS, GB and customer drawings. Each flange can be provided with chemical analysis, pengujian mekanis, pemeriksaan dimensi, pengujian PMI, menyegel verifikasi wajah, EN 10204 3.1 certificate and full heat number traceability to support critical industrial projects.
- ✓Nama Produk: Long WN Flange
- ✓Kelas Bahan: Baja karbon, baja tahan karat, baja paduan, duplex stainless steel and low-temperature steel grades
- ✓Jenis Produk: Weld Neck Flange with extended hub / long tapered neck
- ✓Fitur Utama: Excellent stress distribution, strong butt-weld connection, suitable for severe pressure and temperature service
- ✓Aplikasi: Bejana tekan, refinery piping, modul lepas pantai, pembangkit listrik, chemical units, process equipment nozzles
Parameter Produk
| Nama Produk | Long WN Flange |
| Kelas Bahan | ASTM A105, A350 LF2, A694 F52/F60/F65, ASTM A182 F304/F304L, F316/F316L, F321, F11, F22, F5, F9, F51, F53 |
| Jenis Bahan | Baja Karbon, Baja Tahan Karat, Baja Paduan, Baja Tahan Karat Dupleks, Low Temperature Steel |
| Formulir Produk | Forged long weld neck flange, flensa mesin, custom nozzle flange |
| Rentang Ukuran | DN15 – DN1500 (1/2 inci – 60 inci) |
| Kelas Tekanan | Kelas 150 – 2500 / PN10 – PN100 |
| Menyegel Wajah | Federasi Rusia, FF, RTJ, PT, MFM |
| Perawatan Permukaan | Minyak anti karat, cat hitam, galvanis celup panas, pengawetan, pasif, hasil akhir yang dikerjakan dengan mesin |
| Standar | ASME B16.5, ASME B16.47, 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
Chemical composition below is for reference based on a common carbon steel grade used for long WN flanges. Final chemistry depends on the specified material grade, heat treatment condition and applicable manufacturing standard. Actual values are confirmed by mill test certificate, incoming material verification and project inspection requirements.
| Elemen | C | Dan | M N | P | S | Kr | Di dalam | Mo | Lainnya |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A105 Isi % | 0.35 maks | 0.10 – 0.35 | 0.60 – 1.05 | 0.035 maks | 0.040 maks | 0.30 maks | 0.40 maks | 0.12 maks | Cu 0.40 maks, V 0.08 maks |
Sifat Mekanik
Mechanical properties for long WN flanges vary according to material grade, rasio reduksi penempaan, kondisi perlakuan panas dan ketebalan bagian. The following values are typical minimum requirements for commonly specified grades. Project-specific requirements, impact testing and hardness limits can be provided according to purchase order and applicable standard.
| Nilai | Kekuatan Tarik | Kekuatan Hasil | Pemanjangan | Kekerasan | Kepadatan |
|---|---|---|---|---|---|
| ASTM A105 | 485 MPa min | 250 MPa min | 22% menit | 137-187 HB | 7.85 gram/cm3 |
| ASTM A182 F316L | 485 MPa min | 170 MPa min | 30% menit | 95 HB max typical | 7.98 gram/cm3 |
Tabel Ukuran Umum
| Rentang Ukuran | Kelas Tekanan | Menyegel Wajah | Bahan | Tersedianya |
|---|---|---|---|---|
| DN15 – DN50 | Kelas 150 – 600 | Federasi Rusia | A105, F304L, F316L | Saham / Produksi |
| DN65 – DN300 | Kelas 150 – 1500 | Federasi Rusia / RTJ | A105, LF2, F304, F316, F11 | Saham / Produksi |
| DN350 – DN600 | Kelas 150 – 2500 | Federasi Rusia / RTJ | A105, F22, F316L, F51 | Produksi |
| DN700 – DN1500 | Kelas 150 – 900 | Federasi Rusia | A105, A694 F60, F304L, F316L | Dibuat Sesuai Pesanan |
Perbandingan Spesifikasi Berbeda
| Jenis | Keterangan | Penggunaan Khas |
|---|---|---|
| Flensa Leher Las Standar | Conventional tapered hub flange for butt welding to pipe | General process piping and pressure lines |
| Long WN Flange | Extended neck flange with longer hub for reinforcement and nozzle connection | Bejana tekan, kolom, towers and critical piping transitions |
| RTJ Long WN Flange | Long weld neck flange with ring type joint groove for high-pressure sealing | Kilang minyak, offshore and high-pressure hydrocarbon service |
| Custom Nozzle Long WN Flange | Long WN flange machined to project drawing with special neck length and bore | Equipment nozzles, reactors and special engineered systems |
Standar Setara dan Nama Internasional
Long WN flanges are commonly produced to ASME dimensions or to custom equipment drawings, while equivalent drilling and flange systems can also be supplied to European, German, Japanese and Chinese standards. Material grade naming differs by region, so final selection should be confirmed by pressure rating, temperature range and corrosion service requirements.
| Standar / Wilayah | Kode Standar | Kelas Khas / Setara |
|---|---|---|
| Amerika Serikat | ASME B16.5 | ASTM A105, A350 LF2, A182 F304/F316, F11/F22 |
| Eropa | EN 1092-1 | P245GH, C22.8, 1.4301, 1.4404, 13CrMo4-5 |
| Jerman | DIN 2527 / 2566 | C22.8, 1.0460, 1.4571, 1.7380 |
| Jepang | JIS B2220 | SFVC2A, SUS304, SUS316, SF440A |
| Cina | GB/T 9119 | 20#, 16M N, 304, 316L, 12Cr1MoV |
Alur Proses Produksi
SASA FLANGE controls each manufacturing stage for long WN flanges to ensure correct grain flow, neck geometry, sealing face accuracy and traceable material compliance for critical industrial service.
- 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 | Normalisasi, tempering atau anil | 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 composition inspection is performed on raw material and, bila diperlukan, on finished forgings to verify compliance with the specified grade such as A105, LF2 or A182 stainless and alloy steel. Testing confirms limits for carbon, mangan, phosphorus, sulfur and alloying elements, ensuring the long WN flange matches project specifications and material certificates.
2. Pengujian Sifat Mekanik
Mechanical properties testing includes tensile strength, kekuatan hasil, elongation and hardness verification in accordance with the applicable ASTM or EN material standard. For low-temperature or critical service, impact testing can also be arranged. These tests confirm the long weld neck flange has sufficient strength, ductility and integrity for pressure-containing service.
3. Inspeksi Dimensi
Pemeriksaan dimensi mencakup diameter luar, ketebalan, panjang hub, neck taper, ukuran lubang, lingkaran lubang baut, hole quantity and hole alignment. The raised face or RTJ groove is also checked for accuracy and surface finish. This inspection is especially important for long WN flanges because extended neck dimensions often follow customer drawings or equipment nozzle requirements.
4. Pengujian PMI dan Pengujian Hidrostatis
PMI testing is available to confirm alloy content and prevent material mix-up, particularly for stainless steel, alloy steel and duplex long WN flanges. Hydrostatic pressure testing can be arranged when required for assembled components or project specifications. EN 10204 3.1 sertifikat, inspection reports and full heat number traceability are supplied to support documented quality control.
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
Long WN flanges are selected for demanding piping and equipment connections where additional neck length, smooth stress flow and strong butt-weld performance are required. They are widely used in process plants, pressure equipment and severe service systems where leakage resistance and structural reliability are critical.
| Industri | Aplikasi Khas | Mengapa Produk Ini Digunakan |
|---|---|---|
| Minyak dan Gas | Perpipaan kilang, tergelincir di lepas pantai, high-pressure process lines, pressure vessel nozzles | Provides strong butt-weld joint, better stress distribution and reliable sealing in severe service |
| Pengolahan Kimia | Reaktor, kolom, corrosive fluid transfer lines, nozel peralatan | Suitable for alloy and stainless grades with custom neck length for engineered connections |
| Pembangkit Listrik | Jalur umpan boiler, sistem uap, turbine auxiliaries, high-temperature headers | Handles elevated pressure and temperature with improved structural reinforcement |
| Pengolahan Air | Large process piping, chemical dosing systems, pump and vessel connections | Offers durable flange-to-pipe transition and stable sealing performance |
| Kelautan dan Lepas Pantai | Modul FPSO, sistem air laut, deck process piping, nozel kapal | Resists vibration and cyclic loading, with material options for corrosion-prone environments |
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 long WN flange?
A: A long WN flange is a long weld neck flange with an extended tapered hub compared with a standard weld neck flange. It is designed to provide gradual stress transfer from pipe or vessel nozzle to the flange. It is widely used in pressure vessels, high-pressure piping and critical service applications where reinforcement and fatigue resistance are important.
Q: What materials are available for long WN flanges?
A: SASA FLANGE supplies long WN flanges in carbon steel, baja suhu rendah, baja tahan karat, baja paduan dan baja tahan karat dupleks. Nilai umum meliputi ASTM A105, A350 LF2, A694 F52/F60, A182 F304/F304L, F316/F316L, F11, F22, F51 dan F53. Pemilihan material tergantung pada tekanan, suhu, corrosion environment and project specifications.
Q: Kelas tekanan apa yang didukung?
A: Long WN flanges can be supplied in ASME Class 150, 300, 600, 900, 1500 Dan 2500, as well as equivalent PN ratings such as PN10 to PN100 where applicable. The actual rating depends on flange design, kelas materi, operating temperature and the governing standard or customer drawing for the equipment connection.
Q: Bisa SASA FLANGE menyediakan ukuran khusus?
A: Ya. SASA FLANGE can manufacture custom long WN flanges according to drawings, including special neck length, dimensi hub, ukuran lubang, transisi dinding, tipe menghadap, drilling pattern and non-standard materials. This is especially useful for vessel nozzles, process equipment and replacement components where standard dimensions do not fully match the installation requirements.
Q: Sertifikat apa yang diberikan?
A: SASA FLANGE menyediakan EN 10204 3.1 material certificate as standard for long WN flange orders. Supporting documents can include mill test certificate, analisis kimia, laporan pengujian mekanis, catatan PMI, dimensional inspection report and hydrostatic test report when required. Full heat number traceability is maintained from raw material to finished product for project quality assurance.
Hubungi kami
If you are looking for long wn flange 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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- ☎️ Telp: +86 21 52236361
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