Seamless stainless steel heat exchanger tubing SA213 TP347H Cold Drawn Pickled
Seamless stainless steel heat exchanger tubing SA213 TP347H Cold Drawn Pickled
Type 347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 and 321 offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries. The high temperature oxidation resistance of 347 is similar to that of 304 stainless steel. Useful to 1500°F.
Stainless Steel Tube Standards:
American standards:
ASTM A249: Standard specification for welded austenitic steel boiler,superheater, heat-exchanger and condenser tubes.
ASTM A269:Standard specification for welded austenitic stainless steel tubing for general service.
ASTM A688:Standard specification for welded austenitic stainless steel feedwater heater tubes.
ASTM A554:Standard specification for welded stainless steel mechanical tubing.
ASTM A268:Specification for seamless and welded Ferritic/Martensitic stainless steel tubing for General Service
ASTM A789:Specification for seamless and welded Ferritic/Austenitic stainless steel tubing for General Service
ASTM A312:Seamless/Welded austenitic stainless steel pipe
Germanic standards:
DIN17455:General purpose welded circular stainless steel tubes
DIN17457: Welded circular austenitic stainless steel tubes subject to special requirements; technical delivery conditions
European Standard:
EN 10217-7:Welded Steel Tubes for pressure purposes-Part 7 Stainless steel tubes
U-Bent Tubes
SPEZILLA Tube heat exchanger tubes can also be supplied as 'u' bends or serpentines, manufactured according to various heat exchanger standard or to customer's own specifications.
Standard Technical Range
- OD 9.5mm - 38.1mm
- WT up to 6.35mm
- Bending radii 1.25 x OD up to 1700mm
- Bends can be supplied in accordance with TEMA R / ASTM SA/A556
- Leg length up to 15000mm
- Heat treatment where required by electric furnance or direct resistance
- Hydrotesting up to 10,000 psi
Additional Testing
- Dye penetrant of 'U' bend area
- PMI testing
- Heat Treatment
Heat Treatment
We are equipped to carry out heat treatment of bends plus a minimum 150mm of leg.
Heat Treatment Equipment
- Heat treatment equipment is computer controlled with the added facility of data recording.
- An argon protective atmopshere is used inside stainless and special alloy tubes during heat treatment.
- We can provide all types of annealing; solution annealing and stress relieving.
SA-213-TP347H
Seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes
Chemical Properties:
| Carbon: 0.04-0.10 | Silicon: 0.75 max |
| Manganese: 2.00 | Nickel: 9.00-13.0 |
| Potassium: 0.04 | Chromium: 17.0-20.0 |
| Sulfur: 0.03 | Molybdenum: n/a |
Mechanical Properties:
Tensile Strength:
ksi: 75
MPa: 517
Yield:
ksi: 30
MPa: 207
Elongation in 2in. or 50mm, min. %: 35
Max. Hardness Rockwell B: 90
| Standard Dimensions - U-Bent Tube | ||
|---|---|---|
| Outside diameter | 6 ÷90 mm | ¼”÷3 ½” |
| Maximum overall length | 1 ÷ 28 m | 3 ÷ 92 ft |
| Bending Radius Min. | 1,5 × tube diameter | |
| Bending Radius Max. | 1500 mm | 4ft |
| Inspections and Tests - U-Bent Tube |
|---|
| Chemical Composition |
| Mechanical Properties |
| Hydrostatic Test |
| Pneumatic Test |
| Eddy Current Test |
| Dye Penetrant Test |
| Magnetoscopic Test |
| Heat Treatment Conditions |
|---|
| Stress-Relieved Anneal |
| Annealed (Bright Annealing) |
| Materials - U-Bent Tube | |
|---|---|
| Carbon Steel | SA 179 / A 179 |
| Carbon Steel | SA 210 / A 210 |
| Carbon Steel | SA 334 / A 334 |
| Stainless Steel | SA 213 / A 213 |
| SA249 / A249 | |
| SA268 / A268 | |
| SA688 / A688 | |
| Duplex Stainless Steel | SA 789 / A 789 |
| Copper & Cu Alloys | SB 111 / B 111 |
| Titanium & Ti Alloys | SB 338 / B 338 |
| For different materials please contact our sales department. | |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.