Tempat asal:
Cina
Nama merek:
YUHONG
Sertifikasi:
ISO 9001/TUV/PED
Nomor model:
ASTM A335 P22
| Rows Bend Tube | U-Tube |
| Enables very dense tube arrangement, high heat transfer area density – ideal for large industrial boiler superheaters, reheaters, and similar applications requiring large surface areas. | Limited by the 180° return bend radius; space in the center of the tube bundle is wasted, resulting in reduced heat transfer area. |
| Serpentine (multi-bend) design distributes thermal stress across multiple bends, offering more uniform stress distribution – suitable for frequent start-stop cycles. | Each U-bend expands/contracts independently, effectively eliminating thermal stress – ideal for applications with large temperature differences. |
| More complex process; requires specialized equipment for continuous bending, but reduces the number of connections – cost-effective for large-scale, standardized production. | Simpler single-tube bending process; high equipment versatility – suitable for small-batch or custom production. |
| Open structure with regular tube gaps allows easy physical cleaning (e.g., high-pressure water jetting) – good maintainability. | Internal tube surfaces are difficult to clean mechanically; typically requires chemical cleaning. Replacement of inner tubes is difficult; leaking tubes often must be plugged. |
| Large power station boiler superheaters/reheaters, tubular heaters in large industrial furnaces. | Heat exchangers in chemical and refinery plants, especially where large temperature differences or high pressures exist between shell and tube sides. |
| Chemical Composition (Ladle Analysis) | |
| Element | Composition (wt%) |
| Carbon (C) | 0.05 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | ≤ 0.50 |
| Chromium (Cr) | 1.90 – 2.60 |
| Molybdenum (Mo) |
0.87 – 1.13 |
| Mechanical Properties (as normalized and tempered) | |
| Property | Value (min.) |
| Tensile Strength | ≥ 415 MPa (60 ksi) |
| Yield Strength (0.2% offset) | ≥ 205 MPa (30 ksi) |
| Elongation (longitudinal) | ≥ 30% |
| Elongation (transverse) | ≥ 20% |
| Hardness (Brinell) | ≤ 163 HBW |
Application:
Kirimkan pertanyaan Anda langsung kepada kami
english
français
Deutsch
Italiano
Русский
Español
português
Nederlandse
ελληνικά
日本語
한국
polski
فارسی
বাংলা
ไทย
tiếng Việt
العربية
हिन्दी
Türkçe
indonesia
Peringkat Umum
Cuplikan Penilaian
Berikut ini adalah distribusi semua peringkatSemua Ulasan