| 无损检测： | ET， UT， HT， PT | 表面： | 抛光，酸洗，光亮退火 |
|---|---|---|---|
| 材料 | TP304/304L/304H ， TP310S/310H， TP316L/316H/316Ti ，TP317/317L ， TP321/321H， TP347/347H 904L ， SAF2205， SAF2507， S31803， S32750 | 标准： | ASME SA213 、ASTM A269 、ASME SA789 、ASTM A 789 、EN10216-5、DIN17458、GOST 9941-81 |
| OD： | 9.53，12.7，19.05，25.4MM…. | WT： | 1.24，1.65MM… |
| 强光 | 光亮退火不锈钢管， 不锈钢卷管 | ||
Stainless Steel Seamless Tube Boiler Tube Pickled / Bright Annealed / U BEND ， COIL
U-Bend Tube are widely used in Heat Exchanger Systems. Heat-Exchanger Equipment on the basis of
Seamless Stainless U-Tubes and Welded Stainless U bend Tube is essential in strategically important and
critical felds—Nuclear And Petrochemical Machine Building.
TONG CHUANG Group Start to Produce U Bending Tube Since 2006，Up to now already supply more than
30000 tons Stainless Steel U Bend Tube to 35 countries.
The U-Bend Tube Comply With The Following Standards:
1. ASTM A688/ASME SA688
2. ASTM A803/ASME SA803
3. ASTM A556/ASME SA556
钢级：
| Ferrite | Austenite | 双工 | 超级双相 | Ni-Alloys | 钛 |
TP410 TP405 S44400 S44660 TP430 | TP304/304L TP316/316L TP316Ti TP317/317L TP321 TP347 | S31803 S32205 S32304 | S32750 S32760 | N06600 N08020 N00880 N08825 N08904 | Gr.2 |
Tube Of Other Alloys And Steel Grades Can Be Produced Upon Agreement.
Technical Requirements:
Straight Tubes Standard Specification For Bending:
ASME SA 213; ASME SB 163; ASME A789， ASME SA268， ASME SA269， etc.
Marking: Before Bending By Marking Machine All Over The Tube Length (Bent Section After Heat
Treatment Without Marking)
请注意： Marking is also possible After Bending On The Straight Parts Of U-Bending Tube.
U-Bend Tubes:
-TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association (9th Edition).
-ASTM A688/ASME SA688 Standard Specification For Welded Tubes Of Austenitic Corrosion Resistant
Steel Grade Designed For Feed Water Boilers.
-ASTM B163/ASME SA163 Standard Techinical Requirements For Tubes Of Nickel And Nickel Alloy For
Condensers And Heat Exchangers.
-Customer Specifications.
弯曲半径 From 1.5*OD(Outside Diameter) To 1500mm
When Ordering Tubes With Radius less or equal to 1.5*OD， It Is Necessary To Agree Precision Of Geometrics.
Straight Tubes Maximum Length:(Before Bending): 35000 mm.
Leg Length: Min 1 Meter， Max. 16500 mm (For Max R=1500mm)
请注意： Other Size Are Available Upon Agreement.
热处理： Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).
Hydrostatic Test After U Bending: Maximum Test Pressure 600 Bar， Soaking 10 Sec. With
Dematerialized Water. Compressed Air Cleaning After Hydro-Test.
包装: In Strong Transport-Worthy Pre-fumigated wooden boxes of corresponding dimensions for
each tube Length， Radius， Diameter， According To PO requirements as well as wrapped In polyethylene
films With soft plastic caps on both end of Tube.
我们进行的部分质量检测包括
| 腐蚀测试 | 仅在客户特别要求时进行 |
| 化学分析 | 按照规定的质量标准进行测试 |
| 破坏性/机械测试 | 拉伸 | 硬度 | 压平 | 扩口 | 法兰 |
| 反向弯曲和反向平面测试 | 完全符合相关标准和 ASTM A-450 和 A-530 规范，可确保无故障膨胀、焊接和客户端使用 |
| 涡流测试 | 利用数字瑕疵标记检测系统检测地下的均匀性 |
| 水压试验 | 100% 静水压力测试根据 ASTM-A 450 标准进行，用于检查管子的泄漏情况，我们可支持的最大压力为 20Mpa/7s。 |
| 空气压力测试 | 检查是否有漏气迹象 |
| 目视检查 | 经过钝化处理后，每根管材都要由经过培训的员工进行彻底的目视检查，以发现表面缺陷和其他瑕疵。 |
补充测试 ： 除上述测试外，我们还对生产的产品进行补充测试。其中包括
|
|
|
