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Welding Austenitic heat exchanger u tube, U Bend Pipe Precision TIG Welding

Categories Stainless Steel Heat Exchanger Tube
Brand Name: SPEZILLA
Model Number: ASME SA688
Certification: ISO9001:2008
Place of Origin: CHINA
MOQ: Negotiation
Price: Negotiation
Payment Terms: T/T, L/C
Supply Ability: 100 TONS / MONTH
Delivery Time: WITHIN 30 DAYS
Packaging Details: WOODEN BOXED
Product Name: Stainless Steel U Tube
Finish: Bright Annealed
Type: Welded
Material Grade: TP304, TP304L
O.D.: 1/2'' - 1''
W.T.: 0.035'' - 0.120''
Package: Wooden Boxed
Application: Heat Exchanger
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Welding Austenitic heat exchanger u tube, U Bend Pipe Precision TIG Welding

Welding Austenitic heat exchanger u tube, U Bend Pipe Precision TIG Welding


Spezilla is profession on manufacturing welded stainless steel U bend tubes for feedwater heaters from 1/2'' (12.70mm) to 1'' (25.4mm).

Materials Specifications:

Austenitic Stainless Steel: TP304, TP304L, TP316L, TP321 etc.

Duplex Stainless Steel: UNS31803, 2205

Ferriticc Stainless Steel: TP409L, TP439, TP430 etc.

Specifications of Stainless Steel U Bend Tube:

U Bend Tubes produced to dimensional tolerances and finish requirements of ASTM and ASME A 249/SA 249, A 688/SA 688, and A 803/SA 803 specifications.

Manufacturing Process:

1. TIG Welding, Fully-Finished Tubing Mill

2. Drawing for High Pressure Feedwater Heaters

3. Stretch Straightener

4. Environmentally Friendly Bright Annealing

5. CNC Bending

6. Precision Stress Relief Anneal Station

7. Custom Stack-Rack Boxing

Quality Testing:

Spezilla performs extensive in-line QA testing including:

1. Eddy Current

2. Ultrasonic

3. Hydrostatic

4. Pressure Decay

5. Air Under Water After Bending

Size of Stainless Steel U Bend Tube:

Wall Thickness
OD.035" (.889 mm).049" (1.245 mm).065" (1.651 mm).083" (2.108 mm).095" (2.413 mm).120" (3.048 mm)
(12.7 mm)
(15.875 mm)
(19.05 mm)
(25.4 mm)
R = Redrawn S = Seamless
Depending upon bend radius, some inner tube rows may require an increase in wall thickness

Tolerance of Stainless Steel U Bend Tube:

SizesStandard Tolerances
ProductsODWallLengths and/or coilsGradesODWallLengths
Welded Austenitic Steel Boiler, Super Heater, Heat-Exchangers & Condenser Tubes

Specifications: ASTM-A249, ASME-SA249, ASTM-A688, ASME-SA688

Metric sizes available0.020" (0.51 mm) to 0.220" (5.59 mm)Random or cut lengths up to 90' (27.4 m) Coils to 1-1/2" OD304/304L/
Under 1" (25.4 mm) ±0.004" (0.10 mm) 1" (25.4 mm) to
1-1/2" (38.1 mm) ±0.006" (0.15 mm)
>1-1/2" (38.1 mm) to 2" (50.8 mm) ±0.008" (0.20 mm)
>2" (50.8 mm) to 2-1/2" (63.5 mm) ±0.010" (0.25 mm)
>2-1/2" (63.5 mm) to 3" (76.2 mm) ±0.012" (0.30 mm)
3" (76.2 mm) to 4" (101.6 mm) ±0.015" (0.38 mm)
±10%Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0" Coils to 80,000' (24,384 m)

Applications & Markets:

1. Power Generation

2. Chemical

3. Petrochemical

4. Food

Product Tags:

u bend tube


welded finned tubes

Quality Welding Austenitic heat exchanger u tube, U Bend Pipe Precision TIG Welding for sale
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