Model NO.ASME B163
Connection MethodWelding
ProcessExtruded
CertificationQS, ISO, CE
Surface TreatmentGalvanized
Wall Thickness0.89mm - 2.77mm
Diameter12.7mm - 38.1mm
ColorIvory
Heat TreatmentU-Bending
Transport PackageSeaworthy Plywood Cases or Pallets
SpecificationASME B163 B677 Stainless Stee
HS Code7307230000
Production Capacity1000 Tons Per Month
Detailed description:
Quick Detail:
●Name: ASME B163 B677 Stainless Steel U Bends, Stainless Exhaust Tubing
●Shape: Stainless Steel U Bends
●Material: Stainless Steel
●Steel Grade: 304/304L/304H, 316/316L ...
Packaging & Delivery
| Packaging Detail: |
According to customer's require or export's standard |
| Delivery Detail: |
2 - 15 days after confirmation |
Specifications
✓OD: 12.7mm - 38.1mm
✓WT: 0.89 - 2.77mm
✓Bending Radius: From 1.5*OD to 1500mm (Radius ≤ 1.5*OD requires precision agreement)
✓Straight Tubes Max Length: 35000 mm (Before Bending)
✓Leg Length: Min 1 Meter, Max 16500 mm
✓Heat Treatment: Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg)
| Parameter |
Detail |
Parameter |
Detail |
| Application |
Heat-exchanger Systems |
Bending Radius |
1.5*OD - 1500mm |
| Heat Treatment |
Stress Relieved After U-Bending |
Material Grade |
304/304L/304H, 316/316L, 316Ti, 321, 309S, 310S, 317L, 321H, 347H, 2205, S31803, 2507, 904L |
| Outer Diameter |
12.7mm - 38.1mm |
Standard |
ASTM A312, ASTM A269, ASME SA213, ASTM A249, ASME SA249, ASTM A789, EN10216-5 A106/A1016M |
| Type |
Stainless Steel U Bends/U Tube |
Wall Thickness |
0.89mm - 2.77mm |
"U" Stainless Steel Tubes are manufactured as per customer requirements. Bends can be Heat Treated followed by hydrostatic testing and dye penetrant testing if required.
U bend stainless steel tubes are essential in strategically important and critical fields - nuclear and petro-chemical machine building. Designed for high temperature applications, especially for steam condensing or hot oil systems.
Testing and Processing
1.High Pressure hydrostatic Test: Minimum 10 Mpa - 25Mpa
2.Air Under Water Test After Bending
3.U Tube wall thickness Test
4.Eddy Current Test Before U bend Formed
5.Ultrasonic test before U bend Formed
6.Heat Treatment to stress relieved
7.Ball passing Test
Frequently Asked Questions
Q1: What are the primary standards for these Stainless Steel U Bends?
The tubes comply with major international standards including ASTM A312, ASTM A269, ASME SA213, ASTM A249, ASME SA249, ASTM A789, and EN10216-5.
Q2: What is the range of bending radius available?
We offer a bending radius ranging from 1.5 times the Outside Diameter (OD) up to 1500mm. For radii less than 1.5*OD, specific geometric precision agreements are required.
Q3: Which stainless steel grades are available?
We provide a wide range of grades including 304/304L/304H, 316/316L, 316Ti, 321, 309S, 310S, 317L, 321H, 347H, and duplex steels like 2205, S31803, 2507, and 904L.
Q4: Are the U-bends heat treated after the bending process?
Yes, the tubes undergo stress-relieved heat treatment after U-bending, covering the bending area plus 300mm for each leg to ensure material integrity.
Q5: What quality tests are performed on the U-tubes?
We conduct rigorous testing including high-pressure hydrostatic tests (10-25Mpa), air under water tests, eddy current testing, ultrasonic testing, wall thickness verification, and ball passing tests.
Q6: What are the typical applications for these U-tubes?
They are widely used in heat-exchanger systems, particularly in nuclear power plants, petrochemical facilities, and high-temperature steam condensing or hot oil systems.
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