Seamless Carbon Steel U Bend Tube ASTM A179 Black Painting For Oil
Brand Name:YUHONG
Certification:DNV, BV, PED, LR, ABS, TS, CCS
Model Number:ASTM A179
Minimum Order Quantity:1000KGS
Delivery Time:Depends on quantity
Payment Terms:T/T, L/C
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Product Details
Seamless Carbon Steel U Bend Tube ASTM A179 Black Painting For Oil
U Tubes are manufactured after the Straight Tubes are manufactured. The Bending is done in Cold State on an Automatic U Bending Machine. To ensure that wall thinning and diameter ovality are kept in control, bending of tubes Is done with a mandrel inserted in the tubes. Furthermore the U - Bend portion of the U-Tube is Stress Relieved in controlled conditions and cycle to give longer life.
The U bent tubes are finally 100% Tested for Hydrostatic Test.These tubes are vulnerable to getting damaged in transit and hence are required to be handled with care. We ensure this by packing tubes in specially designed steel frames. These frames are fit into the wooden box o further ensure ety of the tubes.
Chemical Composition
| C, % | Mn, % | P, % | S, % |
| 0.06-0.18 | 0.27-0.63 | 0.035 max | 0.035 max |
Mechanical Properties
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HRB |
| 325 min. | 180 min. | 35 min. | 72 max |
A179 Equivalent Grades
| Grade | ASTM A179 / ASME SA179 | |
| UNS No | K01200 | |
| Old British | BS | CFS 320 |
| German | No | 1629 / 17175 |
| Number | 1.0309 / 1.0305 | |
| Belgian | 629 | |
| Japanese JIS | D3563 / G3461 | |
| French | A49-215 | |
| Italian | 5462 | |
ASTM A179 Tube Outside Diameter Tolerance
| Outside Diameter In. (mm) | Permissible Variations In. (mm) | |
| Over (+) | Under (-) | |
| Under 1 (25.4) | 0.004 (0.1) | 0.004 (0.1) |
| 1 to 1 ½ (25.4 to 38.1), Incl | 0.006 (0.15) | 0.006 (0.15) |
| Over 11⁄2 to 2 [38.1 to 50.8], Excl | 0.008 (0.2) | 0.008 (0.2) |
| 2 to 21⁄2 [50.8 to 63.5], Excl | 0.010 (0.25) | 0.010 (0.25) |
| 21⁄2 to 3 [63.5 to 76.2], Excl | 0.012 (0.3) | 0.012 (0.3) |
Packing
Shipping Mark
Applications
U-bend tubes are widely used in heat-exchanger systems. Heat-exchanger equipment on the basis of seamless stainless U-tubes is essential in strategically important and critical fields — nuclear and petrochemical machine building.
-Pharmaceutical Equipment.
-Chemical Equipment.
-Sea Water Equipment.
-Heat Exchangers.
-Condensers.
-Pulp and Paper Industry
-Off-Shore Oil Drilling Companies.
-Power Generation.
-Petrochemicals.
-Gas Processing.
-Specialty Chemicals.
Seamless Carbon Steel U Bend Tube ASTM A179 Black Painting For Oil
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