| 材料 | ASTM A213 T9， ASTM A179 | 鳍片类型： | Stud， L，HFW， G， LL， |
|---|---|---|---|
| 无损检测： | HT， ECT， Bongding Test | 申请： | Ecominizer， Air Cooler |
ASTM A213 T9 Alloy Steel Seamless Stud Fin Tube Customized Size
What is studded finned tube?
Fin tubes， also known as finned tubes， are heat transfer tubes that have extended surfaces (fins) attached to them. These fins increase the surface area of the tubes， which enhances heat transfer efficiency. Fin tubes are commonly used in various applications where heat exchange is required， such as heat exchangers， boilers， air conditioning systems， and refrigeration units.
The fins on these tubes can be of various types， such as plain， serrated， or helical. They are typically made of materials with good thermal conductivity， such as copper， aluminum， or stainless steel. The fins can be either external (externally finned tubes) or internal (internally finned tubes)， depending on the application requirements.
Features of a Studded Finned Tube:
-占用空间少，因此结构紧凑
-高度耐用
-比翅片管更受欢迎，因为它们是热传导系统
-增强性能
不同类型翅片管的尺寸参考
| 类型 | 说明 | 底管 | 翅片规格（毫米） | ||
| 外径（毫米） | 翅片间距 | 鳍片高度 | 翅片厚度 | ||
| 嵌入式 | G 型鳍舌 | 16-63 | 2.1-5 | <17 | ~0.4 |
| 挤压 | 单一金属组合金属 | 8-51 | 1.6-10 | <17 | 0.2-0.4 |
| 低翅片管 t 型翅片管 | 10-38 | 0.6-2 | <1.6 | ~0.3 | |
| 竹筒波纹管 | 16-51 | 8-30 | <2.5 | / | |
| 伤口 | L/KL/LL 型鳍管 | 16-63 | 2.1-5 | <17 | ~0.4 |
| 字符串 | 弦翅管 | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U 型 | U 型管 | 16-38 | / | / | / |
| 焊接 | 高频焊接翅片管 | 16-219 | 3-25 | 5-30 | 0.8-3 |
| H/HH 型翅片管 | 25-63 | 8-30 | <200 | 1.5-3.5 | |
| 带螺纹的鳍管 | 25-219 | 8-30 | 5-35 | φ5-20 | |
T9 的化学成分
| Cr， % | C， % | P， % | S， % | 莫， % | 锰， % | 硅，% |
| 4.00-6.00 | 0.15 最大值 | 最大 0.025 | 最大 0.025 | 0.45-0.65 | 0.30-0.60 | 最大 0.50 |
A213 T9 合金钢无缝管的机械性能
| 属性 | 数据 |
| 拉伸强度，最小值，（兆帕） | 415 兆帕 |
| 屈服强度，最小值，（兆帕） | 205 兆帕 |
| 伸长率，最小值， (%)， L/T | 30/20 |
合金钢 T9 的等效材料
| 美国材料与试验协会 | JIS G 3458 | UNS | BS | 国际标准化组织 |
|---|---|---|---|---|
| T9 | STPA 26 | S50400 | 3604 P1 629-470 | 2604 II TS38 |
Stud fin tubes offer several 优势 in heat transfer applications:
1️⃣ Enhanced Heat Transfer: Stud fins increase the surface area of the tube， improving heat transfer efficiency between the fluid inside the tube and the surrounding medium. This leads to more effective heat exchange and improved overall performance of the system.
2️⃣ Mechanical Stability: The studs on the fin tubes provide mechanical stability and rigidity to the fins， preventing them from bending or getting damaged during handling or operation. This makes stud fin tubes more durable and resistant to mechanical stresses.
3️⃣ Resistance to Fouling: The presence of studs on the fin tubes disrupts the formation of fouling deposits， such as scaling or debris accumulation， on the fin surfaces. This helps maintain consistent heat transfer performance over extended periods and reduces the need for frequent cleaning or maintenance.
4️⃣ Uniform Heat Distribution: Stud fins promote uniform heat distribution along the tube's length. The studs act as spacers between the fins， ensuring that heat is evenly transferred across the entire surface. This results in reduced temperature variations and improved thermal efficiency.
5️⃣ Enhanced Airflow: The studs on the fin tubes create turbulence in the airflow， increasing convective heat transfer. This improves the effectiveness of heat dissipation in applications such as air-cooled heat exchangers or condensers.
应用：
-发电厂
-化学工业
-热回收设备
-加热工业
-蒸汽锅炉
-炼油
