| 标准： | ASTM A269/A213/A312/A789/A790 | 申请： | 热交换器 |
|---|---|---|---|
| 厚度 | 2 - 70 毫米 | 技术： | 热轧，冷拉，冷轧 |
| 长度 | 定制 | 类型 | 无缝 |
| 证书 | ISO， SGS， BV | 颜色 | 银色 |
| 连接： | 焊接 | 材料 | 不锈钢 |
| 包装 | 木箱 | 压力： | 高压 |
| 形状 | 圆形 | 尺寸 | 定制 |
| 表面处理： | 抛光 | 温度 | High Temperature |
| 壁厚 | 0.5-2.0mm | ||
| 强光 | heat exchangers titanium seamless tube， heat exchangers titanium， sb338 gr.7 titanium | ||
ASME SB338 GR.7 Titanium Alloy Seamless Tube Cold Drawn For Heat Exchanger
We are one of the largest stainless steel， duplex and alloy steel pipe manufacturers in China. After more than 20 years of development， we have accumulated many customers all over the world， and TONG CHUANG products have also won unanimous praise from customers.
ASME SB338 is a Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tube or Tubing for Surface Condensers， Evaporators， and Heat Exchangers. It is the same as ASTM B338 with some minor differences in product marking. There are 28 grades of titanium and titanium alloys used for pipe， with titanium grades 2， 7 and 12 being the most common in pipe applications.
Grade 7 titanium tubing is mechanically and physically identical to CP 2 grade titanium， but due to the addition of palladium to grade 7 titanium， it is the most corrosion resistant of all titanium alloys. Grade 7 titanium tubes are widely used in heat exchange equipment such as tubular heat exchangers， coil heat exchangers， serpentine heat exchangers， condensing evaporators and conveying pipes. Many nuclear power industries use grade 7 titanium tubing as the standard tube for their equipment.
Titanium seamless tubes shall be made from hollow billets by any cold drawing or cold rolling process， with a continuous perimeter at all stages of the manufacturing operation. Titanium welded pipes shall be made from annealed flat rolled sheets by automatic arc welding or other welding processes.
ASME SB338 GR.7 CHEMICAL COMPOSITION
| 要素 | Ti Alloy Gr.7 |
| C | 0.08 最大值 |
| 铁 | 0.30 最大值 |
| Ti | 巴尔 |
| H | 0.015 最大值 |
| Pd | 0.12 – 0.25 |
| O | 最大 0.25 |
| Al | – |
| N | 0.03 最大值 |
ASME SB338 GR.7 MECHANICAL PROPERTIES
| 要素 | Gr7 钛合金 |
| 密度 | 0.163 磅/英寸3 |
| 拉伸强度 | 50 |
| 屈服强度（0.2%Offset） | 40/65 |
| 伸长率 | 20% |
ASME SB338 GR.7 PHYSICAL PROPERTIES
| Beta Transus (F ± 25) | 1675 | ||||
| 热膨胀系数（10-6 英寸/英寸/华氏度） | 32-212 | 4.8 | |||
| 32-600 | 5.1 | ||||
| 32-1000 | 5.4 | ||||
| 32-1200 | 5.6 | ||||
| 32-1500 | 5.6 | ||||
| 密度（磅/立方英寸） | 0.163 | ||||
| 熔点，约（华氏） | 3020 | ||||
| 室温下的电阻率（微欧厘米） | 56 | ||||
| 弹性模量 - 张力（106 磅/平方英寸） | 14.9 | ||||
| 弹性模量 - 扭转（106 磅/平方英寸） | 6.5 | ||||
| 导热性 | 室温下为 9.5 | ||||
| （英制热量/小时/平方英尺/华氏度/英尺） | |||||
| 室温下的比热（Btu/lb./F）。 | 0.124 | ||||
| 焊接性 | 良好 | ||||
| 退火温度 (F) | 全部 | 1300°/30 Min.- 2 小时，风冷 | |||
| 缓解压力 | 1000-1100°/30 分钟；空气冷却 | ||||
| 锻造* 温度 (F) | 封锁 | 1600-1700° | |||
| 加工 | 1500-1600° | ||||
| 现有磨机产品 | 管材，油管 | ||||
| 典型应用 | 用于化工行业中介质具有轻度还原性的耐腐蚀领域 | ||||
| 或在氧化性和还原性之间变化。 | |||||
| Industry Specifications | 美国材料与试验协会 | ||||
| F338 Grade 7 | |||||
Complete titanium tube production system， from smelting to finished tube production. TONG CHUANG GRUOP has modern production equipment， 20 various rolling mills， 3 vacuum annealing furnaces (effective length up to 18.5 meters)， 2 2 ton vacuum consumables melting furnaces and 3 ton vacuum consumables melting furnaces， 1 extruder 2000 tons， 1 hydraulic press 3000 tons. The company has complete quality inspection equipment， equipped with metallographic chemical analyzer， hydrogen， oxygen， nitrogen analyzer and ordinary wire drawing machine， testing machine， hydraulic pneumatic testing machine， hardness tester， eddy current， ultrasonic flaw detection equipment.
应用
- 食品加工业
- 制造行业
- 石油和天然气工业
- 化学工业
- 管道系统
- 通用应用
- 暖气
- 供水系统
- 发电厂
- 造纸和纸浆工业
