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Seamless tubes for heat exchangers


Heat exchanger tubes are made using the cold rolling process and the semi-finished product for these are used rolled steel tubes.

Heat exchanger tubes are used in energy and chemical industry for heating the buildings, water etc. The heat exchanger tubes make it possible to transfer thermal energy from one media to another. The heat transfer may be linked with phase transformation of the media.

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Seamless tubes for heat exchangers

Dimensions of heat exchanger tubes

OUTER DIAMETER (OD)16,0 mm – 51,0 mm
(according to DIN 28180)

12,7 mm – 76,2 mm
(1/2 inch – 3 inch)
(according to  ASTM A179)

The tubes for the heat exchangers may be supplied also in compliance with other standards starting with 4 mm.

EUROPEAN STANDARDSDIN 28180,
EN 10 216
AMERICAN STANDARDSASTM A/SA 179
for heat exchangersSeamless steel tubes16
Dimensional standard SIZES (OD x WT) Dimensional table
EN 10216-2 (10220) 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
ASTM A161 12.70 x 0.89 – 76.20 x 5.59 mm [0.500 x 0.035 – 3.000 x 0.220 in] [20 – 5 BWG] Dimensional table
ASTM A179 12.70 x 0.89 – 76.20 x 5.59 mm [0.500 x 0.035 – 3.000 x 0.220 in] [20 – 5 BWG] Dimensional table
ASTM A199 12.70 x 0.89 – 76.20 x 5.59 mm [0.500 x 0.035 – 3.000 x 0.220 in] [20 – 5 BWG] Dimensional table
ASTM ANSI B36.10 10.3 x 1.24 – 114.3 x 13.49 mm [0.405 x 0.049 – 4.500 x 0.531 in] [1/8 – 4 NPS] Dimensional table
GOST 1060 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
GOST 8734 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
JIS G3461 15.9 x 1.2 – 114.3 x 9.5 mm Dimensional table
JIS G3462 15.9 x 1.2 – 114.3 x 9.5 mm Dimensional table
Withdrawn standards They may still be used occasionally
BS 3606 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
DIN 2391-1 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
DIN 28180 16.0 x 1.2 – 51 x 5 mm Dimensional table
NF A 49-215 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
UNI ISO 1129 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
ČSN 42 6710 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
ČSN 42 6711 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table

Types of steel for heat exchanger tubes

EN 10216-2P235GH
DIN 1629St 37.0
DIN 17175St35.8, 15Mo3
DIN 17173TTSt35N
ASTM A179A179
ASTM A 161Grade C, Grade T-1
ASTM A 335Grade T12

for heat exchangersSeamless steel tubes63
Standard TDC Steel grade (open product)
EN 10216-2 16Mo3
EN 10216-2 P235GH
ASTM A179/A450 A 179
ASTM A199/A450 T11
ASTM A161/A450 Grade C
ASTM A199/A450 T4
ASTM A161/A450 Grade T-1
ASTM A335/A530 P12
GOST 1060 / 1050 10
GOST 550 / 4543 10G2
GOST 550 / 1050 10
GOST 550 / 1050 20
JIS G3462 STBA22
JIS G3461 STB340
JIS G3461 STB510
JIS G3462 STBA12
JIS G3461 STB410
Withdrawn standards They may still be used occasionally
BS 3606 620
BS 3606 622
BS 3606 243
BS 3606 440
BS 3606 320
DIN 17175 15Mo3
DIN 17175 St 35.8
DIN 1629 St 37.0
DIN 17173 TTSt35N
DIN 1629 St 37.0
DIN 17175 15Mo3
DIN 17175 St 35.8
NF A 49-215 TU 37c
NF A 49-215 TU 42c
NF A 49-215 TU 48c
NF A 49-215 TU 13CD4-04
NF A 49-215 TU 15D3
UNI 5462 16Mo5
STN 42 0251 12 021
STN 42 0251 15 313
STN 42 0251 15 128
STN 42 0251 15 128
STN 42 0251 12 022
STN 42 0251 12 025
STN 42 0251 12 021
STN 42 0251 15 020
STN 42 0251 15 121
STN 42 0251 15 020
STN 42 0251 15 121
STN 42 0251 12 025
STN 42 0251 15 313
STN 42 0251 12 022
ČSN 42 0251 15 121
ČSN 42 0251 15 020
ČSN 42 0251 12 021
ČSN 42 0251 12 022
ČSN 42 0251 15 020
ČSN 42 0251 15 121
ČSN 42 0251 12 025
ČSN 42 0251 12 021
ČSN 42 0251 12 022
ČSN 42 0251 12 025
ČSN 42 0251 15 128
ČSN 42 0251 15 313
ČSN 42 0251 15 128
ČSN 42 0251 15 313

Surface protection of heat exchanger tubes

The inner and outer surface is protected by a light oil application.

Upon request it may be protected with and easy removable oil application on the outer side.

The tube ends may be enclosed by a plag.

Testing of heat exchanger tubes

(a) prescribed mechanical tests,
(b) leak tightness test by eddy current,
(c) hydrostatic testing,
(d) ultrasound testing.

Ends of heat exchanger tubes

The ends are vertical to the longitudinal axis and are without burrs.
The ends are vertical to the longitudinal axis and are without burrs.

Tubes length destined of heat exchanger tubes

Upon request the heat exchanger tubes may be supplied in length up to 20 meters.

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Packaging of heat exchanger tubes

(a) tubes bound with a steel band that has a paper underneath
(b) tubes wrapped in plastic sheets, burlap,
(c) tubes in wooden crates.

The tubes are supplied in packages with a circular or hexagonal outline with having weight of 300 – 3 500 kg.

Packaking-STANDARD-tubes bound with a steel band
Packaking-STANDARD-tubes bound with a steel band
Packaking-STANDARD-bundle tied down by steel strap underlaid by paper
Packaking-STANDARD-bundle tied down by steel strap underlaid by paper
Packaking-STANDARD-PLUS-paper tape and polyethylene foil
Packaking-STANDARD-PLUS-paper tape and polyethylene foil
Packaking-STANDARD-PLUS-the bundle placed into a wooden box
Packaking-STANDARD-PLUS-the bundle placed into a wooden box
Packaking-PREMIUM-B-into a wooden box in which the tubes are wrapped in foil
Packaking-PREMIUM-B-into a wooden box in which the tubes are wrapped in foil
Packaking-PREMIUM-C-the bandles are wraped into and plastic foil
Packaking-PREMIUM-C-the bandles are wraped into and plastic foil
Packaking-PREMIUM-D-placing the whole shipment into foil+vacuum sealed
Packaking-PREMIUM-D-placing the whole shipment into foil+vacuum sealed

Markings of the tubes and tube bundles

(a) Tubes are marked by spraying the agreed upon data.
(b) Tube bundles are marked with labels with the agreed upon data.

Marked by a label
Marked by a label
Marked with spray either by a white or black color using InkJet
Marked with spray either by a white or black color using InkJet
Marked by stamping the data
Marked by stamping the data
Laser marking
Laser marking

Certified test reports

ASTM/ASME A450,
EN 10204: for EN 10297		(a) nonspecified testing (only the mandatory tests), 2.2
(b) specified testing – 3.1.B
(c) after agreement – 3.1.A, 3.1.C, 3.2
DIN 500492.2 or 3.1.B.


Straightness

Straightness deviation for the whole length of a tube L can not exceed value of 0.0015 x L.

In conversion to the 1 meter length it can not exceed 3 mm.

Condition of delivery and surface of tubes

Tubes are supplied according to agreed standards.

The cold drawn tubes after the final forming go through thermal processing in shielding gas – normalizing.



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