ASTM A213 / ASME SA213 TP444 Stainless Steel Seamless U Bend Tube For Heat Exchange
The advantage of TP444 Stainless Steel Tube:
1. Corrosion resistance: TP444 stainless steel is highly resistant
to corrosion, making it suitable for applications where the tube
will be exposed to aggressive environments, including acidic and
chloride-rich conditions.
2. Heat resistance: TP444 exhibits good heat resistance, making it
suitable for high-temperature applications such as heat exchangers
and boilers. It can withstand elevated temperatures without
significant distortion or degradation in performance.
3. U-bend capability: TP444 stainless steel is specifically
designed and manufactured as U-bend tubes. They have excellent
bending properties, allowing for easy fabrication of complex tube
layouts, particularly in heat transfer systems.
4. Cost-effective option: TP444 stainless steel U-bend tubes can
offer cost advantages compared to other stainless steel grades with
similar performance characteristics.
5. Compatibility: TP444 stainless steel is compatible with various
media, including water, steam, gases, and oils, making it versatile
for use in different industrial settings.
ASTM A213 Grade TP444 Equivalents
| ASTM A176 | ASTM A240 | ASTM A268 | ASTM A276 | ASTM A479 | ASTM A493 | ASTM A580 | ASTM A581 | ASTM A582 | EN | BS | JIS |
| S44400 | S44400 | S44400 | S44400 | S44400 | S44401 | S44400 | S18235 | S18235 | 1.4521 | X2CrMoTi18-2 | X2CrMoTi18-2 | SUS444 |
Mechanical Property for ASTM A213 Seamless Steel Tube
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (Mpa) min | Elongation (% in 50mm) min | Hardness |
Rockwell B (HR B) | Brinell (HB) |
TP444 | 60(415) | 40(275) | 20 | 96 | 217 |
Chemical Composition for ASTM A213 Seamless Steel Tube
GRADE | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N | Ti | Nb |
TP444 | S444000 | 0.030 | 1.00 | 0.040 | 0.030 | 1.00 | 17.5-19.5 | H | 1.75-2.50 | 0.035 | - | - |
Customer Specifications
Bending Radius: 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)
Note: Other Size Are Available Upon Agreement.
Heat Treatment: 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.
Packaging: 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.
Some of the quality tests carried out by us includes
| Corrosion Test | Conducted only when specially requested by the client |
| Chemical Analysis | Test done as per required quality standards |
| Destructive / Mechanical Testing | Tensile | Hardness | Flattening | Flare | Flange |
| Reverse-bend and Re. flat tests | Carried out in full compliance with relevant standards & ASTM A-450
and A-530 norms, which ensures trouble-free expansion, welding &
use at customers end |
| Eddy Current Testing | Done to detect homogeneities in subsurface by using Digital
Flaw-mark Testing System |
| Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A 450 norms
for checking tube leakage, and biggest pressure we can support
20Mpa/7s . |
| Air Under Pressure Test | To check any evidence of air leakage |
| Visual Inspection | After passivation, every single length of tubes & pipes is
subjected to thorough visual inspection by trained staff for
detecting surface flaws & other imperfections |
Supplementary Testing : Apart from the above mentioned tests, we also carry out on the
manufactured products supplementary testing. The tests conducted
under this include:
- Eddy Current Testing
- O.P Testing
- Radiography Testing
| - Corrosion Testing
- Micro Testing
- Macro Testing
| - IGC Testing
- Ultrasonic testing
- Liquid Penetrate testing
|
Applications
ASTM A213 TP444 U tubes are commonly used in heat exchanger and
condenser applications where resistance to corrosion and high
temperatures is required. Some of the common applications of these
U-tubes include:
Chemical processing: ASTM A213 TP444 U-tubes are used in chemical
processing applications such as acid production, where they are
exposed to highly corrosive environments.
Petrochemical refining: These U-tubes are used in petrochemical
refining applications such as oil and gas processing, where they
are exposed to high temperatures and corrosive environments.
Power generation: ASTM A213 TP444 U-tubes are used in power
generation applications such as steam turbines, where they are
exposed to high temperatures and pressure.
Food and beverage processing: These U-tubes are used in food and
beverage processing applications where they come in contact with
acidic or corrosive substances.
Pharmaceutical industry: ASTM A213 TP444 U-tubes are used in the
pharmaceutical industry for the production of drugs and other
chemicals that require high purity levels.
