Železiarne Podbrezová a.s. |
Ask for quote | +421 48 6451111

Boiler tubes – for pressure equipment, used at higher temperatures


Modern power devices that operate with high efficiency require the use of suitable steel tubes, to guarantee their long-term, safe and trouble-free operation. Steel tubes are important structural materials used in these facilities. These tubes are often referred to as boiler tubes.

Zeleziarne Podbrezova a.s. produces a wide range of steel tubes. Tubes for energy facilities are included in the group of tubes for pressure purposes at higher temperatures.

For production and screening, these tubes are placed high demands. Zeleziarne Podbrezova a.s. possesses the necessary certificates of quality management and product certificates.

Boiler tubes - for pressure equipment, used at higher temperatures

AI assistant

Need a quotation?

Tell us what you need and we will put the enquiry together in the chat.

Or fill in the enquiry form

Seamless boiler tube and pipe sizes

OUTER DIAMETER (OD)10,2 – 139,7 mm
(from 26.9 mm manufactured as hot rolled)
WALL THICKNESS (WT)0,5 – 16,0 mm
(from 2.6 mm manufactured as hot rolled)
EUROPEAN STANDARDSEN 10216-2,
DIN 2448,
BS 3059-1, BS 3059-2,
BS 3602-1, BS 3604-1,
NF A 49-211, NF A 49-213,
UNI 4991,
STN a ČSN 42 5715,
STN a ČSN 42 5716,
PN-H 74252
RUSSIAN STANDARDSGOST 8732
AMERICAN STANDARDSASME B36.10

Dimensional standard SIZES (OD x WT) Dimensional table
EN 10216-4 (10220) 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
ASTM A334 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
ASME 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
ASME SA334 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
Withdrawn standards They may still be used occasionally
BS 3600 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
DIN 2448 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
NF A 49-215 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
UNI 4991 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 5715 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 5716 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 6710 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
STN 42 6711 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table

Dimensional standard SIZES (OD x WT) Dimensional table
EN 10216-1 (10220) 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
ASTM A53 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 8732 20.0 x 2.5 – 140.0 x 16.0 mm Dimensional table
JIS G3454 10.5 x 1.7 – 114.3 x 9.5 mm Dimensional table
JIS G3455 10.5 x 1.7 – 114.3 x 9.5 mm Dimensional table
Withdrawn standards They may still be used occasionally
BS 3600 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
DIN 2391-1 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
DIN 2448 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
NF A 49-112 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
NF A 49-210 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
UNI 7287 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
PN – H 74219 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 5715 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 5716 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table

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 A192 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
ASTM A209 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
ASTM A210 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
ASTM A213 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
ASTM A335 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] Dimensional table
ASTM A556 31.75 x 2.34 – 139.7 x 12.7 mm [1.250 x 0.088 – 5.500 x 0.500 in] [13 – 7/0 GA] 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 8732 20.0 x 2.5 – 140.0 x 16.0 mm Dimensional table
GOST 8734 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
GOST TU 14-3-460 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table
JIS G3456 10.5 x 1.7 – 114.3 x 9.5 mm Dimensional table
JIS G3458 10.5 x 1.7 – 114.3 x 9.5 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 3059-1 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
BS 3059-2 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
BS 3602-1 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
BS 3604-1 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
DIN 2391-1 4.0 x 0.5 – 120.0 x 13.0 mm Dimensional table
DIN 2448 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
NF A 49-211 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
NF A 49-213 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
UNI ISO 1129 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
PN – H 74252 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 5715 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
STN 42 5716 10.2 x 0.5 – 139.7 x 16.0 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

Dimensional standard SIZES (OD x WT) Dimensional table
EN 10216-3 (10220) 10.2 x 0.5 – 139.7 x 16.0 mm Dimensional table
Withdrawn standards They may still be used occasionally
DIN 2448 4.0 x 0.5 – 125.0 x 12.5 mm Dimensional table

Steel grades for tubes intended for pressure equipment

Steel for pressure equipment, used at higher temperatures – Boiler tubes
EN 10216-2P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3,
7CrWVMoNb9-6, 7CrMoVTiB10-10, 10CrMo5-5,
13CrMo4-5, 10CrMo9-10, 25CrMo4, X11CrMo5+I,
X11CrMo5+NT1, X11CrMo5+NT2, X10CrMoVNb9-1
ASTM A 106Grade A, Grade B, Grade C
ASTM A 209Grade T1, Grade T1a, Grade T1b
ASTM A 210Grade A-1, Grade C
ASTM A 556Grade A2, Grade B2, Grade C2
ASTM A 335Grade T/P11, Grade T/P12, Grade T/P22, Grade T/P24
ASTM A 213Grade T/P11, Grade T/P12, Grade T/P22, Grade T/P24
Steel for tubes intended for pressure equipment
EN 10216-1P195TR1, P235TR1, P265TR1, P195TR2, P235TR2, P265TR2.
ASTM A 53Grade A, Grade B

Steel for tubes made from fine-grained steel
EN 10216-3P355N, P460N, P355NH, P460NH, P275NL1, P355NL1, P460NL1, P275NL2, P355NL2, P460NL2.

Steel tubes for low temperatures
EN 10216-4P215NL, P265NL.
ASTM A/SA 333 (A999)Grade 1, Grade 6
ASTM A/SA 334 (A1016)Grade 1, Grade 6
ASTM A/SA 524 (A530)Grade II

Standard TDC Steel grade (open product)
EN 10216-4 P265NL
EN 10216-4 P215NL
ASTM A524/A530 A 524
ASTM A333/A999 Grade 7
ASTM A333/A999 Grade 6
ASTM A333/A999 Grade 1
ASTM A333/A999 Grade 3
ASTM A334/A1016 Grade 7
ASTM A334/A1016 Grade 3
ASTM A334/A1016 Grade 6
ASTM A334/A1016 Grade 1
ASME SA333/SA999 Grade 6
ASME SA333/SA999 Grade 3
ASME SA333/SA999 Grade 1
ASME SA333/SA999 Grade 7
ASME SA334/SA1016 Grade 7
ASME SA334/SA1016 Grade 1
ASME SA334/SA1016 Grade 6
ASME SA334/SA1016 Grade 3
Withdrawn standards They may still be used occasionally
BS 3603 430 LT
BS 3603 503LT
DIN 17173 10Ni14
DIN 17173 TT St35N
NF A 49-215 TU 10N14
NF A 49-215 TU 10N9
NF A 49-215 TU 42BT
UNI 5949 C20
UNI 5949 C15
STN 42 0165 11 449
STN 42 0165 11 503
STN 42 0165 11 448
STN 42 0165 11 419
STN 42 0165 11 419
STN 42 0165 11 503
STN 42 0165 11 448
STN 42 0165 11 369
STN 42 0165 11 449
STN 42 0165 11 369
STN 42 0165 11 503
STN 42 0165 11 369
STN 42 0165 11 449
STN 42 0165 11 448
STN 42 0165 11 369
STN 42 0165 11 503
STN 42 0165 11 419
STN 42 0165 11 419
STN 42 0165 11 448
STN 42 0165 11 449
ČSN 42 0165 11 448
ČSN 42 0165 11 449
ČSN 42 0165 11 449
ČSN 42 0165 11 503
ČSN 42 0165 11 503
ČSN 42 0165 11 448
ČSN 42 0165 11 419
ČSN 42 0165 11 369
ČSN 42 0165 11 419
ČSN 42 0165 11 369
ČSN 42 0165 11 369
ČSN 42 0165 11 449
ČSN 42 0165 11 419
ČSN 42 0165 11 448
ČSN 42 0165 11 503
ČSN 42 0165 11 369
ČSN 42 0165 11 503
ČSN 42 0165 11 419
ČSN 42 0165 11 448
ČSN 42 0165 11 449

Standard TDC Steel grade (open product)
EN 10216-1 P265TR1
EN 10216-1 P265TR2
EN 10216-1 P235TR2
EN 10216-1 P195TR1
EN 10216-1 P195TR2
EN 10216-1 P235TR1
ASTM A53/A530 Grade A
ASTM A53/A530 Grade B
GOST 8731 / 1050 20
GOST 8731 / 1050 10
JIS G3454 STPG410
JIS G3455 STS410
JIS G3455 STS370
JIS G3454 STPG370
JIS G3455 STS480
Withdrawn standards They may still be used occasionally
BS 3601 360
BS 3601 430
DIN 1630 St 37.4
DIN 1630 St 44.4
DIN 1630 St 52.4
DIN 1629 St 52.0
DIN 1629 St 44.0
DIN 1629 St 37.0
NF A 49-210 TU 37B
NF A 49-112 TU E235A
NF A 49-112 TU E220A
NF A 49-210 TU 42B
UNI 7287 Fe 320
PN – H 74219 / 84023 R35
PN – H 74219 / 84018 18G2A
PN – H 74219 / 84023 R45
PN – H 74219 / 84023 R55
STN 42 0250 12 060
STN 42 0250 11 353
STN 42 0250 11 453
STN 42 0250 11 503
STN 42 0250 12 040
STN 42 0250 11 523
STN 42 0250 11 353
STN 42 0250 11 453
STN 42 0250 11 523
STN 42 0250 12 050
STN 42 0250 12 060
STN 42 0250 11 550
STN 42 0250 12 050
STN 42 0250 11 650
STN 42 0250 11 550
STN 42 0250 11 650
STN 42 0250 11 503
STN 42 0250 12 040
ČSN 42 0250 11 523
ČSN 42 0250 11 453
ČSN 42 0250 12 050
ČSN 42 0250 11 503
ČSN 42 0250 12 050
ČSN 42 0250 11 550
ČSN 42 0250 11 550
ČSN 42 0250 12 040
ČSN 42 0250 12 040
ČSN 42 0250 11 650
ČSN 42 0250 12 060
ČSN 42 0250 12 060
ČSN 42 0250 11 650
ČSN 42 0250 11 353
ČSN 42 0250 11 353
ČSN 42 0250 11 453
ČSN 42 0250 11 523
ČSN 42 0250 11 503

Standard TDC Steel grade (open product)
EN 10216-2 X11CrMo5+I
EN 10216-2 P265GH
EN 10216-2 7CrWVMoNb9-6
EN 10216-2 X10CrMoVNb9-1
EN 10216-2 7CrMoVTiB10-10
EN 10216-2 X11CrMo5+NT2
EN 10216-2 11CrMo9-10 QT
EN 10216-2 10CrMo5-5 NT
EN 10216-2 25CrMo4
EN 10216-2 10CrMo9 10
EN 10216-2 14MoV6-3
EN 10216-2 P235GH
EN 10216-2 13CrMo4-5
EN 10216-2 16Mo3
EN 10216-2 X11CrMo5+NT1
EN 10216-2 P195GH
ASTM A106/A530 Grade A
ASTM A106/A530 Grade B
ASTM A106/A530 Grade C
ASTM A213/A1016 T12
ASTM A335/A999 P2
ASTM A 213/A1016 T91
ASTM A335/A999 P21
ASTM A335/A999 P22
ASTM A335/A999 P11
ASTM A213/A1016 T11
ASTM A213/A1016 T2
ASTM A335/A999 P91
ASTM A335/A999 P1
ASTM A213/A1016 T21
ASTM A213/A1016 T22
ASTM A556/A450 C2
ASTM A209/A1016 T1b
ASTM A556/A450 A2
ASTM A335/A999 P12
ASTM A335/A999 P24
ASTM A209/A1016 T1
ASTM A210/A450 Grade A-1
ASTM A556/A450 B2
ASTM A213/A1016 T24
ASTM A209/A1016 T1a
ASTM A210/A450 Grade C
ASTM A192/A450 A 192
ASTM A213/A1016 T5
GOST TU 14-3-460 / 4543 10G2
GOST TU 14-3-190 / 1050 10
GOST TU 14-3-460 / 4543 15ChM
GOST TU 14-3-190 / 1050 20
GOST TU 14-3-460 / 20072 12Ch1MF
GOST 8731 / 1050 20
GOST 8731 / 1050 10
JIS G3458 STPA20
JIS G3456 STPT480
JIS G3458 STPA12
JIS G3456 STPT370
JIS G3458 STPA22
JIS G3458 STPA23
JIS G3458 STPA24
JIS G3456 STPT410
JIS G3461 STB340
JIS G3462 STBA23
JIS G3462 STBA24
JIS G3462 STBA12
JIS G3462 STBA22
JIS G3462 STBA20
JIS G3461 STB510
JIS G3461 STB410
JIS G3462 STBA13
Withdrawn standards They may still be used occasionally
BS 3059-2 620-440
BS 3604-1 620-440
BS 3059-2 620
BS 3604-1 622
BS 3059-2 243
BS 3059-2 440
BS 3604-1 621
BS 3602-1 430
BS 3059-1 320
BS 3059-2 622-490
BS 3604-1 660
BS 3059-2 360
BS 3602-1 360
DIN 17175 15Mo3
DIN 17175 14MoV63
DIN 17175 13CrMo44
DIN 17175 19Mn5
DIN 17175 St 35.8
DIN 17175 10CrMo9 10
DIN 17175 St 45.8
DIN 17175 17Mn4
DIN 17175 17Mn4
DIN 17175 St 45.8
DIN 17175 St 35.8
DIN 17175 19Mn5
DIN 17175 14MoV63
DIN 17175 10CrMo9 10
DIN 17175 15Mo3
DIN 17175 13CrMo44
NF A 49-213 TU 15CD2-05
NF A 49-211 TUE 220
NF A 49-213 TU 10CD9-10
NF A 49-213 TU 10CD5-05
NF A 49-213 TU 37c
NF A 49-213 TU 48c
NF A 49-211 TUE 275
NF A 49-213 TU 42c
NF A 49-211 TUE 250
NF A 49-213 TU 15D3
NF A 49-213 TU 13CD4-04
NF A 49-213 TU 52c
UNI 5462 C14
UNI 5462 12CrMo9 10
UNI 5462 16Mo5
UNI 5462 14CrMo3
UNI 5462 C18
PN – H 74252 / 84024 13HMF
PN – H 74252 / 84024 15MH
PN – H 74252 / 84024 K18
PN – H 74252 / 84024 16M
PN – H 74252 / 84024 K10
PN – H 74252 / 84024 10H2M
STN 42 0251 15 128
STN 42 0251 11 418
STN 42 0251 15 128
STN 42 0251 15 313
STN 42 0251 15 313
STN 42 0251 12 022
STN 42 0251 15 020
STN 42 0251 11 418
STN 42 0251 11 368
STN 42 0251 12 025
STN 42 0251 15 121
STN 42 0251 12 021
STN 42 0251 11 368
STN 42 0251 12 021
STN 42 0251 12 022
STN 42 0251 15 121
STN 42 0251 12 025
STN 42 0251 15 020
STN 42 0251 11 368
STN 42 0251 15 313
STN 42 0251 12 025
STN 42 0251 15 128
STN 42 0251 15 313
STN 42 0251 11 418
STN 42 0251 11 368
STN 42 0251 15 121
STN 42 0251 15 128
STN 42 0251 15 020
STN 42 0251 15 121
STN 42 0251 12 022
STN 42 0251 15 020
STN 42 0251 12 021
STN 42 0251 12 025
STN 42 0251 12 021
STN 42 0251 11 418
STN 42 0251 12 022
ČSN 42 0251 12 021
ČSN 42 0251 15 128
ČSN 42 0251 12 025
ČSN 42 0251 15 121
ČSN 42 0251 12 022
ČSN 42 0251 12 025
ČSN 42 0251 15 020
ČSN 42 0251 12 022
ČSN 42 0251 15 020
ČSN 42 0251 11 418
ČSN 42 0251 15 313
ČSN 42 0251 11 368
ČSN 42 0251 11 368
ČSN 42 0251 15 121
ČSN 42 0251 15 128
ČSN 42 0251 12 021
ČSN 42 0251 15 313
ČSN 42 0251 11 418
ČSN 42 0251 12 025
ČSN 42 0251 11 368
ČSN 42 0251 12 021
ČSN 42 0251 15 020
ČSN 42 0251 15 128
ČSN 42 0251 11 418
ČSN 42 0251 12 022
ČSN 42 0251 15 313
ČSN 42 0251 15 121
ČSN 42 0251 12 022
ČSN 42 0251 15 121
ČSN 42 0251 12 025
ČSN 42 0251 15 128
ČSN 42 0251 11 418
ČSN 42 0251 15 313
ČSN 42 0251 11 368
ČSN 42 0251 12 021
ČSN 42 0251 15 020

Standard TDC Steel grade (open product)
EN 10216-3 P355NL1
EN 10216-3 P355NH
EN 10216-3 P355NL2
EN 10216-3 P460NL1
EN 10216-3 P460NH
EN 10216-3 P275NL1
EN 10216-3 P355N
EN 10216-3 P460N
EN 10216-3 P460NL2
EN 10216-3 P275NL2
Withdrawn standards They may still be used occasionally
DIN 17179 WStE 285
DIN 17179 EStE 255
DIN 17179 TStE 285
DIN 17179 EStE 285
DIN 17179 WStE 355
DIN 17179 WStE 255
DIN 17179 TStE 355
DIN 17179 EStE 355
DIN 17179 TStE 255
DIN 17179 WStE 460
DIN 17179 TStE 460
DIN 17179 StE 420
DIN 17179 WStE 420
DIN 17179 EStE 420
DIN 17179 EStE 460
DIN 17179 TStE 420
DIN 17179 StE 460
DIN 17179 StE 255
DIN 17179 StE 355
DIN 17179 StE 285

Steel comparison according to DIN and EN standards.

The fine-grained steels are supplied in 4 types of qualities.

DIN 17179

TypeMarkingSteel grades
BasicStE255, 285, 355, 420, 460
High – temperatureWStE255, 285, 355, 420, 460
Low – temperatureTStE255, 285, 355, 420, 460
Low – temperature customEStE255, 285, 355, 420, 460

EN 10216 – 3

MarkingSteelgrades
BasicP-N355, 460
High – temperatureP-NH355, 460
Low – temperatureP-NL1275, 355, 460
Low – temperature customP-NL2275, 355, 460
Poznámka: oceľ v stave Q – zušľachtenom nie sú v prehľade

AI assistant

Need a quotation?

Tell us what you need and we will put the enquiry together in the chat.

Or fill in the enquiry form

Length of seamless boiler tubes

Length [m]for sizes [mm]
5 – 6D < 60,3
5 – 6 or 10 – 14
(po dohode 22,4)		D => 60,3 and t < 7,1
5 – 6D => 60,3 and t => 7,1
Longer tubes (22 – 24 meters) can be supplied upon agreement.

Types of supplied length of tubes are:
(a) random length,
(b) fixed length ± 500 mm,
(c) exact length

L < 6 m 0 + 10 mm
L = 6 – 12 m 0 + 15 mm
L > 12 m + upon agreement


Seamless boiler tube testing

Only specific testing.

Testing comparison DIN 17175 and EN 10216 – 2:
DIN – quality classEN – testing category
without ultrasoundITC1
with ultrasoundIIITC2

Non–alloy steels: I or III, class TC1 or TC2
Alloy steels: – III, class TC2

Boiler tube ends

The tubes with deburred ends or ends customized for welding.
The tubes with deburred ends
or ends customized for welding.
The ends are vertical to the longitudinal axis and are without burrs.
The ends are vertical to the longitudinal axis and are without burrs.

Deburring applies to

Deburring
  • Tube OD: 26,7 – 114,3 mm
  • Tube WT: 3,2 – 12,5 mm
  • Tube lengths: 4 – 13 m
  • Deburring angle, α (alpha): 30°+5°, 37,5°±2,5°
  • Dimension, c: 1,6 ± 0,8 mm

Seamless boiler tubes surface protection

While ordering, it is necessary to agree upon the method and means of temporarily protecting the surface of the tubes during transportation and storage.

Packaging of seamless boiler tubes


(a) tubes bound with a steel band,
(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-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
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-STANDARD-tubes bound with a steel band
Packaking-STANDARD-tubes bound with a steel band

Markings of the tubes and tube bundles

(a) The tubes with outside diameter up to 51 mm may be marked by a label attached to the tube bundle,

(b) Larger tubes must, at least, have markings at one end of the tube with the necessary data – producer name , standard, steel grade, test category, heat no, inspector’s mark, identification number. Additional marking upon agreement.

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

Certified test reports for boiler tubes

EN 10204: for EN 102943.1 specific testing
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
ASTM A450, A530, A1016, A999,
DIN 50049,
STN 42 0251, ČSN 42 0251		3.1.B, C.

Straightness of boiler tubes

Allowed straightness is 0.0015 multiple of the tube length.

For 1 meter length the allowed straightness is 3 millimeters.

Condition of delivery and surface of boiler tubes

Condition of the tubes meets the requirements of the appropriate standards, i.e. the tubes go through normalized forming or after cold forming goes through normalized annealing.


The tube surface meets the standards’ requirements and the means of manufacturing.




Contact us

Are you interested in cooperation? Send us an inquiry, or order the goods directly from stock.
+421 48 6451111 | admin@zelpo.sk

Download the Product portfolio of steel tubes

Send us your INQUIRY

 Your ASK FOR QUOTE form