ASTM A178 Supper Tabung Penukar Panas Baja Karbon, Pipa Las Tahan Listrik
Rincian produk
baja karbon Tabung
,Penukar panas tabung
ASTM A178 Kotel dan tabung superheater baja karbon dan baja karbon mangan yang dilas dengan resistensi listrik
Aplikasi: untuk boiler, superheater, heat exchanger, condenser, boiler flues, superheater flues dan e ends
Bahan: Baja karbon dan baja karbon mangan
Produksi: Pengelasan Resistensi Listrik
Jangkauan ukuran:O.D.:6-127mm W.T.:0.9-9.1mm L: sesuai dengan kebutuhan pelanggan
| Kelas baja dan komposisi kimia: | |||||
| Elemen | Kelas A, Baja Karbon Rendah | Kelas C, Baja Karbon Rata-rata | Kelas D, Karbon-Mangan Baja | ||
| Karbon | 0.06-0.18 | 0.35 maksimal | 0.27 maksimal | ||
| Mangan | 0.27-0.63 | 0.80 maksimal | 1.00-1.50 | ||
| Fosfor, maksimal | 0.035 | 0.035 | 0.030 | ||
| Sulfur, maksimal | 0.035 | 0.035 | 0.015 | ||
| Silikon | - | - | 0.10 menit | ||
| Sifat Mekanis | Kelas A | Kelas C | Kelas D | ||
| Stretch Tensile: min ksi[Mpa] | 47[325] | 60[415] | 70[485] | ||
| Titik Hasil: min ksi[Mpa] | 26[180] | 37[255] | 40[275] | ||
| Perpanjangan: | ≥ 35% | ≥ 30% | ≥ 30% | ||
| Toleransi untuk OD dan WT ((SA-450/SA-450M) | |||||
| OD dalam ((mm) | + | - | WT dalam mm) | + | - |
| <1''(25.4) | 0.10 | 0.10 | ≤1,1/2'(38.1) | 20% | 0 |
| 1'''1'1'1'25.4'38.1 | 0.15 | 0.15 | >1.1/2'(38.2) | 22% | 0 |
| > 1,1/2' ′ < 2' ′8 | 0.20 | 0.20 | |||
| 2' ′ < 2.1/2 ′ ((50.8 ′ 63.5) | 0.25 | 0.25 | |||
| 2.1/2''<3'(63.5'76.2) | 0.30 | 0.30 | |||
| 3''?? < 4' ((76.2 ️ 101.6) | 0.38 | 0.38 | |||
| 4' ′ < 7.1/2' ((101.6 ′ 190.5) | 0.38 | 0.64 | |||
| > 7.1/2 ′9′(190.5 ′228.6) | 0.38 | 1.14 | |||
Pengolahan panas:
Setelah pengelasan, semua tabung dirawat panas pada suhu 1650 °F (900 °C) atau lebih tinggi dan diikuti oleh pendinginan di udara atau di ruang pendinginan dari tungku atmosfer terkontrol.
Tabung Cold-Drawn dirawat panas setelah melewati cold-draw terakhir pada suhu 1200 °F ((650 °C) atau lebih tinggi.
Uji dan Pemeriksaan:
Uji ketegangan
Uji menghancurkan
Tes Mekanis
- Tes perataan
- Uji Flange
Dokumen referensi:
Spesifikasi ASTM A450/A450M untuk persyaratan umum untuk tabung baja karbon, paduan ferit, dan paduan austenit
E213 Praktik untuk Pemeriksaan Ultrasonik Pipa dan Tabung Logam
E273 Praktik untuk Pemeriksaan Ultrasonik Pipa dan Tabung Las Lengan
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