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Heat exchanger tube in an extensive range of austenitic stainless steels, duplex stainless steels, nickel alloys, titanium and zirconium, suitable for all types of heat exchangers, such as seawater coolers, condensers, evaporators, heaters and reheaters.
Heat exchanger Tubes are used in all types of process industries. Characteristic requirements are: bead worked weld, fixed lengths and extensive testing.
Our commitment to on-time delivery and supply of high-quality material has enabled us to build lasting relationships with engineering companies and end users right across the global.
Each U bend tube of our range is rigorously quality checked by our team of talented professionals on every stage of production to deliver the clients defect free best quality products.
⚙ Specifications & Properties
Grade
commonly ASTM A213 S304/304L, 316/316L, 317L, 321/321H, 410, Duplex 2205 (UNS S31803)
Standard
ASTM A312, ASTM A269, ASTM A213
Process Method
Cold Drawn / Cold Rolled
Surface Finish
Annealed / Polished
Package
Woven bag for each piece, then packed in seaworthy wooden cases
Delivery Time
20-60 Days after receiving the deposit (Normally according to the order quantity)
Price Item
FOB, CIF or as negotiation
Payment
T/T (30% in advance, 70% against the BL Copy) or as negotiation
Quality Requirement
Mill Test Certificate will be supplied with shipment, Third Party Inspection is acceptable
Surface Protection
Unless otherwise stated in order, tubes are delivered with inner and outer surfaces temporarily protected with a film of light mineral oil.
Tubes Ends
The tubes are supplied plain, square cut and on request the tubes can be deburred.
U-Bend Tube Processing Features:
- We use Cold Drawn technology to produce U bend tube.
- U bend tubes produce will accordance to customer's drawings.
- To avoid oxidation, inert gas (Argon) is passed through tubes ID at the required flow rate.
- The radius is checked for its OD and wall thinning with the recommended specification.
- We'll choose three different positions or as customer's require to make sure tubes quality. We'll do physical properties and micro-structure test.
- Visual inspection for waviness and cracks is done with Dye Penetrant Test.
- Each tube is then hydro tested at the recommended pressure to check for leakage.
🧪 Chemical Composition for Raw Material
| ASTM/UNS |
C (max) |
Si (max) |
Mn (max) |
P (max) |
S (max) |
Cr |
Ni |
Mo |
Ti |
| TP304/S30400 |
0.080 |
1.00 |
2.00 |
0.045 |
0.03 |
18.0-20.0 |
8.0-10.5 |
- |
- |
| TP304L/S30403 |
0.035 |
1.00 |
2.00 |
0.045 |
0.03 |
18.0-20.0 |
8.0-13.0 |
- |
- |
| TP304H/S30409 |
0.04-0.10 |
1.00 |
2.00 |
0.045 |
0.03 |
18.0-20.0 |
8.0-11.0 |
- |
- |
| TP316/S31600 |
0.080 |
1.00 |
2.00 |
0.045 |
0.03 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
- |
| TP316L/S31603 |
0.035 |
1.00 |
2.00 |
0.045 |
0.03 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
- |
| TP316Ti/S31635 |
0.080 |
1.00 |
2.00 |
0.045 |
0.03 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
0.7>5x(C+N) |
| TP321/S32100 |
0.080 |
1.00 |
2.00 |
0.045 |
0.03 |
17.0-19.0 |
9.0-12.0 |
- |
0.7>5x(C+N) |
| TP317L/S31703 |
0.035 |
1.00 |
2.00 |
0.045 |
0.03 |
18.0-20.0 |
11.0-15.0 |
3.0-4.0 |
- |
| TP347H/S34709 |
0.04-0.10 |
1.00 |
2.00 |
0.045 |
0.03 |
17.0-19.0 |
9.0-13.0 |
- |
- |
| TP309S/S30908 |
0.080 |
1.00 |
2.00 |
0.045 |
0.03 |
22.0-24.0 |
12.0-15.0 |
0.75 |
- |
| TP310S/S31008 |
0.080 |
1.00 |
2.00 |
0.045 |
0.03 |
24.0-26.0 |
19.0-22.0 |
0.75 |
- |
📊 Applications
Petroleum, chemical enterprise, super heater of boiler and heat exchanger
High temperature-resistant transmission fluid pipe in power station
Ship with pressure pipe
Exhaust purification device
Construction and ornament
Solar industry, military, semiconductor etc.
▼ Stainless Steel Coiled Tubing Material Grade Comparison
| U.S.A. (AISI) |
GERMANY (DIN 17006) |
GERMANY (W.N. 17007) |
FRANCE (AFNOR) |
JAPAN (JIS) |
ITALY (UNI) |
SWEDEN (SIS) |
U.K. (BSI) |
E.U. (EURONORM) |
SPAIN |
RUSSIA |
| 201 |
- |
- |
- |
SUS 201 |
- |
- |
- |
- |
- |
- |
| 301 |
X 12 CrNi 17 7 |
1.4310 |
Z 12 CN 17-07 |
SUS 301 |
X 12 CrNi 1707 |
23 31 |
301S21 |
X 12 CrNi 17 7 |
X 12 CrNi 17-07 |
- |
| 302 |
X 5 CrNi 18 7 |
1.4319 |
Z 10 CN 18-09 |
SUS 302 |
X 10 CrNi 1809 |
23 31 |
302S25 |
X 10 CrNi 18 9 |
X 10 CrNi 18-09 |
12KH18N9 |
| 303 |
X 10 CrNiS 18 9 |
1.4305 |
Z 10 CNF 18-09 |
SUS 303 |
X 10 CrNiS 1809 |
23 46 |
303S21 |
X 10 CrNiS 18 9 |
X 10 CrNiS 18-09 |
- |
| 303 Se |
- |
- |
Z 10 CNF 18-09 |
SUS 303 Se |
X 10 CrNiS 1809 |
- |
303S41 |
- |
X 10 CrNiS 18-09 |
12KH18N10E |
| 304 |
X 5 CrNi 18 10
X 5 CrNi 18 12 |
1.4301
1.4303 |
Z 6 CN 18-09 |
SUS 304 |
X 5 CrNi 1810 |
23 32 |
304S15
304S16 |
X 6 CrNi 18 10 |
X 6 CrNi 19-10 |
08KH18N10
06KH18N11 |
| 304 N |
- |
- |
- |
SUS 304N1 |
X 5 CrNiN 1810 |
- |
- |
- |
- |
- |
| 304 H |
- |
- |
- |
SUS F 304H |
X 8 CrNi 1910 |
- |
- |
- |
X 6 CrNi 19-10 |
- |
| 304 L |
X 2 CrNi 18 11 |
1.4306 |
Z 2 CN 18-10 |
SUS 304L |
X 2 CrNi 1911 |
23 52 |
304S11 |
X 3 CrNi 18 10 |
X 2 CrNi 19-10 |
03KH18N11 |
| - |
X 2 CrNiN 18 10 |
1.4311 |
Z 2 CN 18-10-Az |
SUS 304LN |
X 2 CrNiN 1811 |
23 71 |
- |
- |
- |
- |
| 305 |
- |
- |
Z 8 CN 18-12 |
SUS 305 |
X 8 CrNi 1812 |
23 33 |
305S19 |
X 8 CrNi 18 12 |
X 8 CrNi 18-12 |
- |
| - |
- |
- |
Z 6 CNU 18-10 |
SUS XM7 |
- |
- |
- |
X 6 CrNiCu 18 10 4 Kd |
- |
- |
| 309 |
X 15 CrNiS 20 12 |
1.4828 |
Z 15 CN 24-13 |
SUH 309 |
X 16 CrNi 2314 |
- |
309S24 |
X 15 CrNi 23 13 |
- |
- |
| 309 S |
- |
- |
- |
SUS 309S |
X 6 CrNi 2314 |
- |
- |
X 6 CrNi 22 13 |
- |
- |
| 310 |
X 12 CrNi 25 21 |
1.4845 |
- |
SUH 310 |
X 22 CrNi 2520 |
- |
310S24 |
- |
- |
20KH23N18 |
| 310 S |
X 12 CrNi 25 20 |
1.4842 |
Z 12 CN 25-20 |
SUS 310S |
X 5 CrNi 2520 |
23 61 |
- |
X 6 CrNi 25 20 |
- |
10KH23N18 |
| 314 |
X 15 CrNiSi 25 20 |
1.4841 |
Z 12 CNS 25-20 |
- |
X 16 CrNiSi 2520 |
- |
- |
X 15 CrNiSi 25 20 |
- |
20KH25N20S2 |
| 316 |
X 5 CrNiMo 17 12 2 |
1.4401 |
Z 6 CND 17-11 |
SUS 316 |
X 5 CrNiMo 1712 |
23 47 |
316S31 |
X 6 CrNiMo 17 12 2 |
X 6 CrNiMo 17-12-03 |
- |
| 316 |
X 5 CrNiMo 17 13 3 |
1.4436 |
Z 6 CND 17-12 |
SUS 316 |
X 5 CrNiMo 1713 |
23 43 |
316S33 |
X 6 CrNiMo 17 13 3 |
X 6 CrNiMo 17-12-03 |
- |
| 316 L |
X 2 CrNiMo 17 13 2 |
1.4404 |
Z 2 CND 17-12 |
SUS 316L |
X 2 CrNiMo 1712 |
23 48 |
316S11 |
X 3 CrNiMo 17 12 2 |
X 2 CrNiMo 17-12-03 |
03KH17N14M2 |
| 317 L |
X 2 CrNiMo 18 16 4 |
1.4438 |
Z 2 CND 19-15 |
SUS 317L |
X 2 CrNiMo 1815 |
23 67 |
317S12 |
X 3 CrNiMo 18 16 4 |
- |
- |
| 321 |
X 6 CrNiTi 18 10 |
1.4541 |
Z 6 CNT 18-10 |
SUS 321 |
X 6 CrNiTi 1811 |
23 37 |
321S31 |
X 6 CrNiTi 18 10 |
X 6 CrNiTi 18-11 |
08KH18N10T |
| 347 |
X 6 CrNiNb 18 10 |
1.4550 |
Z 6 CNNb 18-10 |
SUS 347 |
X 6 CrNiNb 1811 |
23 38 |
347S31 |
X 6 CrNiNb 18 10 |
X 6 CrNiNb 18-11 |
08KH18N12B |
| UNS31803 |
X 2 CrNiMoN 22 5 |
1.4462 |
- |
- |
- |
- |
- |
- |
- |
- |
| 410 |
X 6 Cr 13 / X 10 Cr 13 |
1.4000 / 1.4006 |
Z 10 C 13 |
SUS 410 |
X 12 Cr 13 |
23 02 |
410S21 |
X 12 Cr 13 |
X 12 Cr 13 |
12Kh13 |
🏭 Factory & Production
Advanced Pipe Factory Facility
Quality Advantage:
The quality of our products for the control line in the oil and gas sector is assured not just during the controlled manufacturing process but also by way of finished product testing. Typical tests include:
- Non-destructive tests
- Hydrostatic tests
- Surface finish controls
- Dimensional accuracy measurements
- Flare and coning tests
- Mechanical and chemical property testing
Application of Capillary Tubes:
Medical device industry
Temperature-guided industrial temperature control, sensors, thermometers
Pens care industry core tube
Micro-tube antenna, small precision stainless steel antennas
Electronic small-diameter stainless steel capillaries
Jewelry needle punch
Watches and pictures
Car antenna tube, bar antennas, antenna tube
Laser engraving equipment tubes
Fishing gear, accessories, and Yugan out
Dietary devices with stainless steel capillary
Mobile phone and computer styluses
Heating pipe industry and oil industry
Printers and silent box needles
Double-melt stainless steel tube in window-coupled systems
Industrial small diameter precision stainless steel tubes
Precision dispensing with stainless steel needles
Microphones, headphones, and microphone tubes
📦 Product & Packaging Gallery
Seaworthy Pipe Packaging
Finished Stainless Steel Tubing
Stainless Steel Coil Tube
Frequently Asked Questions (FAQ)
Q What manufacturing standards apply to these stainless steel exchanger pipes?
Our products are manufactured according to major global standards including ASTM A312, ASTM A269, and ASTM A213. Common material grades include S304/304L, 316/316L, 317L, 321/321H, 410, and Duplex 2205 (UNS S31803).
Q How is oxidation prevented during the production of U-bend tubes?
To avoid oxidation on the inner diameter (ID) of the tubes during cold drawing or thermal treatment, inert gas (Argon) is passed through the tubes at the required flow rate.
Q What tests are performed to guarantee the quality of the heat exchanger tubes?
Each tube undergoes rigorous testing, including hydrostatic testing at recommended pressure to check for leakage, non-destructive testing, dye penetrant checks for surface cracks, dimensional accuracy measurements, and mechanical/chemical property analyses.
Q In what industries are capillary stainless steel tubes commonly used?
Capillary tubes are widely used in medical devices, industrial temperature sensors, watches, stylus pens, electronic components, automotive antennas, laser engraving machinery, printers, and precision dispensing systems.
Q What packaging and surface protection methods are utilized for shipping?
Tubes are delivered with their inner and outer surfaces temporarily protected by a light mineral oil film to prevent corrosion. Each piece is packed in a woven bag and then grouped into robust, seaworthy wooden cases to ensure safe transit.
Sihe Steel
