Keterangan
Detil Produk
A weld neck flange is a butt-welded flange featuring a long tapered neck that transfers stress from the flange to the pipe, making it one of the most reliable flange types for high pressure, high temperature and cyclic service. Ini banyak digunakan dalam proses perpipaan, platform lepas pantai, kilang, power plants and critical utility systems where strength, leak tightness and long service life are required.
SASA FLANGE supplies weld neck flanges in standard and customized dimensions according to ASME, EN, DIN, JIS, GB and project drawings. Setiap ordo dapat didukung dengan analisis kimia, pengujian mekanis, pemeriksaan dimensi, pengujian PMI, sealing face inspection, EN 10204 3.1 certificate and full heat number traceability to meet international project quality requirements.
- ✓Nama Produk: Flensa Leher Las
- ✓Kelas Bahan: Baja karbon, baja tahan karat, baja paduan, low temperature steel and duplex stainless steel grades
- ✓Jenis Produk: Forged pipe flange with long tapered hub and butt weld end
- ✓Fitur Utama: High strength connection, excellent stress distribution, reliable sealing for severe service
- ✓Aplikasi: Minyak dan gas, petrokimia, pembangkit listrik, pembuatan kapal, desalination and water treatment piping
Parameter Produk
| Nama Produk | Flensa Leher Las |
| Kelas Bahan | ASTM A105, A350 LF2, A694 F52/F60/F65, ASTM A182 F304/F304L/F316/F316L/F321/F11/F22/F91/F51/F53/F55 |
| Jenis Bahan | Baja Karbon, Baja Tahan Karat, Baja Paduan, Low Temperature Steel, Baja Tahan Karat Dupleks, Super Duplex Stainless Steel |
| Formulir Produk | Flensa palsu, flensa mesin, flensa leher las panjang, standard weld neck flange |
| Rentang Ukuran | DN15 – DN1500 (1/2 inci – 60 inci) |
| Kelas Tekanan | Kelas 150 – 2500 / PN6 – PN100 / HANYA 5K – 40K |
| Menyegel Wajah | Federasi Rusia, FF, RTJ, PT, MFM |
| Perawatan Permukaan | Minyak anti karat, painted, galvanis celup panas, pengawetan, pasif, hasil akhir yang dikerjakan dengan mesin |
| 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
The following chemical composition is for reference based on a common carbon steel weld neck flange grade. Actual composition depends on the specified material grade, standard and heat number. Final chemical values shall comply with the applicable ASTM, EN, DIN, JIS or GB material standard and be confirmed by the mill test certificate.
| 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 |
Sifat Mekanik
Mechanical properties of weld neck flanges vary according to material grade, kondisi perlakuan panas dan ketebalan bagian. The data below shows typical minimum values for commonly requested grades used in industrial piping. For project orders, SASA FLANGE provides mechanical test reports in accordance with the relevant material standard and purchase specification.
| Nilai | Kekuatan Tarik | Kekuatan Hasil | Pemanjangan | Kekerasan | Kepadatan |
|---|---|---|---|---|---|
| ASTM A105 | 485 MPa min | 250 MPa min | 22% menit | 187 HB maks | 7.85 gram/cm3 |
| ASTM A182 F316/F316L | 515 MPa min | 205 MPa min | 30% menit | 217 HB maks | 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, A694 F52, F22, F316L | Produksi |
| DN700 – DN1500 | Kelas 150 – 900 | Federasi Rusia | A105, A350 LF2, F304L, F51 | Dibuat Sesuai Pesanan |
Perbandingan Spesifikasi Berbeda
| Jenis | Keterangan | Penggunaan Khas |
|---|---|---|
| Flensa Leher Las Wajah Mengangkat | Standard weld neck flange with raised sealing face for common gasket seating | Perpipaan proses umum, minyak dan gas, water and utility systems |
| Ring Type Joint Weld Neck Flange | High pressure weld neck flange with RTJ groove for metal ring gasket sealing | High pressure hydrocarbon, refinery and offshore systems |
| Flensa Leher Las Panjang | Extended hub design often used as a nozzle flange or vessel connection | Bejana tekan, kolom, tanks and specialized piping connections |
| Flat Face Weld Neck Flange | Flat sealing face for use with full-face gaskets and cast iron equipment | Low pressure water service and equipment connections |
Standar Setara dan Nama Internasional
Weld neck flanges are manufactured to multiple international dimensional standards, while material grades are selected separately according to ASTM, EN or other specified codes. Buyers should confirm both the flange standard and the forging material grade when ordering. The table below shows common dimensional standards and typical material equivalents used in global projects.
| Standar / Wilayah | Kode Standar | Kelas Khas / Setara |
|---|---|---|
| Amerika Serikat | ASME B16.5 | ASTM A105, A182 F304/F316, A350 LF2, A694 F52 |
| Eropa | EN 1092-1 | P245GH, C22.8, 1.4301, 1.4404, 1.4462 |
| Jerman | DIN 2633 / 2635 / 2638 | C22.8, P250GH, 1.4571, 1.4462 |
| Jepang | JIS B2220 | SFVC2A, SUS304, SUS316, SF440A |
| Cina | GB/T 9119 | 20#, 16M N, 304, 316L, 2205 |
Alur Proses Produksi
Weld neck flange quality depends on strict control of forging, heat treatment and precision machining. SASA FLANGE follows documented manufacturing procedures to ensure dimensional accuracy, kinerja penyegelan, traceability and compliance with project specifications.
- 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 finished flange samples to verify compliance with the specified grade such as A105, F316L or F11. Testing is carried out by spectrometer or laboratory analysis to confirm carbon, mangan, kromium, nikel, molybdenum and other required elements before release for production or shipment.
2. Pengujian Sifat Mekanik
Mechanical testing verifies that the flange material meets the required tensile strength, kekuatan hasil, elongation and hardness values after forging and heat treatment. Test coupons are prepared according to applicable standards, and the results are reviewed against ASTM or EN requirements to ensure the weld neck flange performs safely in pressure piping service.
3. Inspeksi Dimensi
Dimensional inspection covers outer diameter, ketebalan flensa, dimensi hub, ukuran lubang, lingkaran baut, diameter lubang baut, facing height and overall machining tolerances. Sealing face finish and concentricity are also checked to ensure proper gasket seating and alignment with mating flanges, reducing the risk of installation problems and leakage in the field.
4. Pengujian PMI dan Pengujian Hidrostatis
PMI testing is available to confirm alloy identity for stainless steel, duplex and alloy steel weld neck flanges, preventing material mix-up on critical projects. Hydrostatic testing can be arranged according to customer specification or assembled system requirements. EN 10204 3.1 sertifikat, inspection records and heat number traceability are supplied for complete quality documentation.
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
Weld neck flanges are preferred in piping systems that require high mechanical strength, reliable leak tightness and resistance to pressure or temperature cycling. Their tapered hub design reduces stress concentration and makes them suitable for critical service across many industrial sectors.
| Industri | Aplikasi Khas | Mengapa Produk Ini Digunakan |
|---|---|---|
| Minyak dan Gas | Pipa transmisi, kilang, gas processing units, platform lepas pantai | Provides strong butt-welded connection for high pressure, vibration and cyclic loading |
| Pengolahan Kimia | Corrosive fluid lines, reaktor, process skids, acid and solvent piping | Available in stainless and alloy grades for corrosion resistance and sealing reliability |
| Pembangkit Listrik | Saluran uap, boiler feed systems, turbine auxiliaries, high temperature piping | Handles elevated temperature and pressure with good stress distribution |
| Pengolahan Air | Pump stations, unit desalinasi, filter systems, large utility pipelines | Offers durable flanged connection with easy maintenance and dependable gasket sealing |
| Kelautan dan Lepas Pantai | Sistem air laut, garis pemberat, fire-fighting pipelines, topside process piping | Suitable for harsh service where strength, corrosion resistance and inspection traceability are important |
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: Apa itu flensa leher las?
A: A weld neck flange is a forged flange with a long tapered hub that is butt welded to the pipe. This design improves stress distribution from the flange into the pipe wall and makes it suitable for high pressure, high temperature and severe cyclic service. It is widely used where joint integrity and long-term reliability are critical.
Q: What materials are available for weld neck flanges?
A: SASA FLANGE supplies weld neck flanges in carbon steel, baja karbon suhu rendah, baja tahan karat, baja paduan, duplex and super duplex grades. Bahan umum meliputi ASTM A105, A350 LF2, A694 F52, A182 F304/F316, F11, F22, F91, F51 dan F53, selected according to pressure, temperature and corrosion requirements.
Q: Kelas tekanan apa yang didukung?
A: Weld neck flanges are available in ASME Class 150, 300, 400, 600, 900, 1500 Dan 2500, as well as EN PN6 to PN100 and JIS 5K to 40K ranges depending on size and standard. The correct pressure rating should be selected together with material grade and design temperature for the actual service condition.
Q: Bisa SASA FLANGE menyediakan ukuran khusus?
A: Ya. SASA FLANGE can produce weld neck flanges to customized bore sizes, dimensi hub, pola pengeboran, facing types and non-standard thicknesses based on drawings or project specifications. We also support special materials, long weld neck designs, Alur RTJ, large diameters and machining requirements for OEM and EPC project supply.
Q: Sertifikat apa yang diberikan?
A: Dokumentasi standar meliputi EN 10204 3.1 sertifikat material dengan ketertelusuran nomor panas. According to project requirements, SASA FLANGE can also provide MTC, laporan inspeksi dimensi, laporan PMI, hasil pengujian mekanis, chemical analysis records and hydrostatic or other third-party inspection documents to support quality approval and export compliance.
Hubungi kami
If you are looking for weld neck 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.
- 📧 Surel: penjualan@sasaflange.com
- 📱 Ada apa: +86 13764965049
- ☎️ Telp: +86 21 52236361
- 🌐 Situs web: www.sasaflange.com
