Product Specification and Size :
1):Standard: ASTM A312, ASTM A269, ASTM A213 etc.
2):Outer Diameter: 8mm-219mm
3):Wall thickness: 0.25mm-140mm
4):Grade: TP304, TP304L, TP316L, TP321, 904L etc.
5):Dimension according to ANSI B36.10 & B36.19
DESCRIPTION OF STAINLESS STEEL HEAT EXCHANGER TUBES
Various austenitic stainless steels, duplex stainless steels, nickel alloys, titanium and zirconium heat exchange tubes, suitable for all types of heat exchangers, such as seawater coolers, condensers, evaporators, heaters and reheaters.
Chemical Composition of Stainless steel heat exchanger tubes
| Chemical Composition | |||||||
| Grade | C | Si | Mn | P | S | Ni | Cr |
| 201 | 0.15 | 1.00 | 5.50-7.50 | 0.06 | 0.03 | 3.50-5.50 | 16.00-18.00 |
| 202 | 0.15 | 1.00 | 7.50-10.00 | 0.06 | 0.03 | 4.00-6.00 | 17.00-19.00 |
| 304 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 8.00-11.00 | 18.00-20.00 |
| 304L | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 8.00-12.00 | 18.00-20.00 |
| 309 | 0.20 | 1.00 | 2.00 | 0.045 | 0.03 | 12.00-15.00 | 22.00-24.00 |
| 309S | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 12.00-15.00 | 22.00-24.00 |
| 310 | 0.25 | 1.50 | 2.00 | 0.045 | 0.03 | 19.00-22.00 | 24.00-26.00 |
| 310S | 0.08 | 1.50 | 2.00 | 0.035 | 0.03 | 19.00-22.00 | 24.00-26.00 |
| 316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316L | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316Ti | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 410 | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 0.60 | 11.50-13.50 |
| 430 | 0.12 | 0.75 | 1.00 | 0.04 | 0.03 | 0.60 | 16.00-18.00 |
Main test terms and procedures for heat exchanger tubes according to ASTM A213 and ASTM A1016, EN 10216-5:
Heat treatment and solution annealing / bright annealing
Cut to the required length and deburr;
Chemical composition analysis test using direct reading spectrometer, heating 100% PMI and one tube at a time
Vision test and endoscope test for surface quality test
100% hydrostatic test and 100% eddy current test
Ultrasonic testing in accordance with MPS (Material Purchase Specification)
Mechanical tests include tensile test, flat test, flare test, hardness test
Impact test should meet standard requirements
Particle size test and intergranular corrosion test
Ultrasonic wall thickness measurement
