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SS 304/304L Heat Exchanger Tubes

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.
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  • Heat Exchanger Tube

  • Taigang Puxin

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Taigang Puxin's heat exchanger tube program includes imperial and metric sizes, from outside diameter 12 mm up to 40 mm (0.472 to 1.575 in.). Special sizes can be made to order. Taigang Puxin heat exchanger tube are supplied in straight lengths up to 30 meters, or as U-bent tubes.


Lower life-cycle cost with duplex stainless steels

Our portfolio of duplex stainless steels is the widest on the market. Duplex stainless steel heat exchanger tubes perform exceptionally well in a variety of environments and media common in process industries, resulting in lower life-cycle costs.


Heat exchanger tube materials
The tables show our standard materials for heat exchanger tube. Other grades can be offered on request.
Duplex stainless steels




Grade UNS ASTM EN no. W.-nr AFNOR
3RE60 S31500 - 1.4424 1.4417 Z2CND18-05-03
SAF 2205™ S31803/S32205 - 1.4462 - Z2CND22-05-03
SAF 2304® S32304 - 1.4362 1.4362 Z2NC23-04AZ
SAF 2707 HD™ S32707 - - - -
SAF 2507® S32750 - 1.441 - -
High-alloy austenitic stainless steels and nickel alloys




Grade UNS ASTM EN steel no. W.-nr AFNOR
70 N06600 Alloy 600 - 2.4816 -
69 N06690 Alloy 690 2.4642*** 2.4642 NC30FE(RCCM)
60 N06625 Alloy 625 - - -
41 N08825 Alloy 825 - 2.4858 -
30 N08800 - 1.4558 1.4558 -
28 N08028 - 1.4563 1.4563 -
2RK65™ N08904 - 1.4539 1.4539 Z1NCDU25-20-4
254 SMO* S31254 - 1.4547 (1.4529)** -
* 254 SMO is a trademark of Outokumpu OY.
** In brackets, nearest equivalent steel grade
*** Not applicable for tube and pipe. Only for information.
Austenitic stainless steels




Grade UNS ASTM EN steel no. W.-nr AFNOR
3R12 S30403/S30400 304L/304 1.4306/1.4301 1.4306/1.4301 Z2CN18-10
3R60™ S31603/S31600 316L/316 1.4435/1.4436 1.4435/1.4436 Z2CND17-13
5R75 S31635 316Ti 1.4571 1.4571 (Z6CNDT17-12)**
6R35 S32100/S32109 321/321H 1.4541/1.4940 1.4541/1.4878 (Z6CNT18-10)**
Titanium and Zirconium




Type of material Grade(s)
Titanium Pure titanium and titanium grades:
1, 2, 3, 4, 7, 9, 11, 12, 16, 17, 26 and 28
Zirconium Zirconium 702 (ZR-702)
Product standards





American standards European standards
Grade ASTM ASME EN VD TÜV
Duplex
SAF 2707 HD™ A-789 SA-789 - -
SAF 2507® A-789 SA-789 10216-5 VD TÜV Blatt 508
SAF 2205™ A-789 SA-789 10216-5 VD TÜV Blatt 418
SAF 2304® A-789 SA-789 10216-5 -
3RE60 A-789 SA-789 - -
Ni-Alloy
70 B-163 B-167 SB-163 SB-167 - VD TÜV Blatt 305
69 B-163 B-167 SB-163 SB-167 - -
41 B-163 B-423 SB-163 SB-423 - -
30 B-163 B-407 SB-163 SB-407 10216-5 -
28 B-668 SB-668 10216-5 VD TÜV Blatt 483
2RK65™ A-269 SB-677 10216-5 VD TÜV Blatt 421
254 SMO* A-213 A-269 SA-213 SA-269 10216-5 -
Austenitic
5R75 A-213 SA-213 10216-5 -
3R60 A-213 A-269 SA-213 10216-5 -
3R65 A-213 A-269 SA-213 10216-5 -
6R35 A-213 A-269 SA-213 10216-5 -
3R12 A-213 A-269 SA-213 10216-5 -


U-bent heat exchanger tubes

Taigang Puxin stainless heat exchanger tubes can also be delivered as U-bent tubes*, manufactured according to the common heat exchanger standards. We can use DIN 28179, TEMA RCB 2.31 or various customer specifications. Copies of all specifications are available on request.


Technical parameters

-OD 12.7- 38 mm

-Bending radii from 1.5 x OD up to 1,250 mm. Minimum bending radii for OD over 28 mm after agreement.

-Leg length min. 1,000 mm.

-Leg length max. 12,000 mm.

-Heat treatment for radii up to 1,000 mm.


Heat treatment

If specified, we are equipped to carry out heat treatment of bends plus minimum 150 mm of leg.

-Furnace is computer controlled and all data is recorded.

-We use an Argon protective atmosphere inside the tubes.

-We can supply all types of annealing; solution annealing, stress relieving and stabilization.


Measuring, cutting, deburring and cleaning

-U-bends are measured exactly in accordance with relevant standards.

-All tubes are cut to the specified leg lengths, ends are deburred and the tubes are internally cleaned with air.

-Before packing, both ends of U-bends are capped with plastic caps.


Packing

-In strong, open or closed wooden boxes, depending on destination - max 8,000 kg.

-Ends of tubes protected by plastic caps.

-Vertical separators for each radius.

-Chloride free plastic separators between each row, every 2 meters.

-Each bundle is covered with plastic.

-Customers can provide a packing drawing or we can prepare a packing plan.

-Packing lists, covered with plastic, are placed on each wooden box for easy identification of order details, including exact list of radii and lengths inside.


* Valid for wall thickness less than or equal to 4 mm/0.157 in.


Our heat exhanger tubes are typically used in:

Chemical processing

Condensers

Flue gas cleaning

Evaporators

Feedwater heaters

Gas processing

Hydrometallurgy

Oil refining, petrochemical and gas processing

Phosphoric acid production

Petrochemical processing

Salt evaporation

Seawater-cooled heat exchangers

Urea production

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