Perlawanan Listrik Dilas Tabung Penukar Panas Baja Karbon ASTM A178 / SA178
Rincian produk
high carbon steel tube
,Penukar panas tabung
ASTM A178/ SA178 Resistensi Listrik Las Baja Karbon Dan Baja Karbon Manganis Boiler Dan Tabung Superheater
Bahan:Baja karbon dan baja karbon mangan
Produksi:Pengelasan Resistensi Listrik
Jangkauan ukuran:O.D.: 12,7-127mm W.T.:0.9-9.1mm L: sesuai dengan kebutuhan pelanggan
Aplikasi:Untuk Boiler, Superheater, Heat-Exchanger, Condensers, Boiler flues, Superheater flues dan ujungnya
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
Sifat Kimia
| Elemen | Kelas A,Baja rendah karbon | Kelas C,Baja Karbon Rata-rata | Kelas D, Baja karbon-mangan | |
| Karbon | 0.06-0.18 | 0.35 Max | 0.27Max | |
| Mangan | 0.27-0.63 | 0.80Max | 1.00-1.50 | |
| Fosfor, Max. | 0.035 | 0.035 | 0.030 | |
| Sulfur, Max. | 0.035 | 0.035 | 0.015 | |
| Silikon | - | - | 0.10 menit | |
| Sifat Mekanis | Kelas A | Kelas C | Kelas D | |
| Kekuatan tarik: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 |
Tag:Tabung baja las, Tabung penukar panas baja karbon
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