DIN 17175-79 Seamless steel tubes

DIN 17175 alloy steel pipe is just a big class,and it has many classifivations.

DIN 17175 79 Seamless steel tubes

We mainly produce DIN 17175 ST35.8,DIN 17175 ST45.8, and 10CrMo910 steel pipes.

Application: For high, middle, low pressure boiler and pressure purpose

Chemical composition DN17175
Grade C Si Mn P S Cr Mo
St35.8 ≤0.17 0.10-0.35 0.40-0.80 ≤0.040 ≤0.040 / /
St45.8 ≤0.21 0.10-0.35 0.40-1.20 ≤0.040 ≤0.040 / /
15Mo3 0.12-0.20 0.10-0.35 0.40-0.80 ≤0.035 ≤0.035 / 0.25-0.35
13CrMo44 0.10-0.18 0.10-0.35 0.40-0.70 ≤0.035 ≤0.035 0.70-1.10 0.46-0.65
10CrMo910 0.08-0.15 ≤0.50 0.40-0.70 ≤0.035 ≤0.035 0.20-0.25 0.90-1.20
Mechanical Property DN17175
Grade Yield Strength (Mpa) Tensile Strength (Mpa) Elongation(%)
St35.8 ≥235 360-480 25
St45.8 ≥255 410-530 21
15Mo3 ≥275 450-600 20
13CrMo44 ≥290 440-590 20
10CrMo910 ≥280 450-600 18

Delivery Condition:Annealed, Normalized, Normalized and Tempered

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

Inner packing:

Caps on two ends of every pipe

Package:

bare packing/bundle packing/wooden carton packing.

DIN 17175-79 Seamless steel tubes

DIN 17175 Material Comparison Tables

DIN 17175 steel pipes are used in boiler installations, high-pressure pipelines and tank construction and special machinery for both high (градусов 600) temperature and high-pressure devices.

This alloy steel pipe is just a big class,and it has many classifivations. We mainly produce DIN 17175 ST35.8,DIN 17175 ST45.8, and 10CrMo910 steel pipes.

Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI) of DIN 17175
Features Specifications
OD(mm)   Wall Thickness Unit(mm)
2 2.5 3 3.5 4 4.5 5 6 6.5-7 7.5-8 8.5-9 9.5-10 11 12
Φ25-Φ28                        
Φ32                        
Φ34-Φ36                        
Φ38                        
Φ40                           
Φ42                           
Φ45                        
Φ48-Φ60                     
Φ63.5                     
Φ68-Φ73                        
Φ76            
Φ80            
Φ83            
Φ89            
Φ95            
Φ102            
Φ108            
Φ114               
Φ121               
Φ127               
Φ133               
Φ140                  
Φ146                  
Φ152                  
Φ159                  
Φ168                  
Chemical composition and Mechanical Property DN17175

Grade

Chemical Composition

Mechanical Property

C Si Mn P≤ S≤

Cr

Mo

(MPa)

(MPa)

(%)

St35.8 ≤0.17 0.10~
0.35
0.40~
0.80
0.030 0.030 / / 360~480 ≥235 ≥25
St45.8 ≤0.21 0.10~
0.35
0.40~
1.20
0.030 0.030 / / 410~530 ≥255 ≥21
15Mo3 0.12~
0.20
0.10
~0.35
0.40~
0.80
0.030 0.030 / 0.25~
0.35
460~600 ≥270 ≥20

Chemical composition and Mechanical Property of EN10216-2

Grade

Chemical Composition

Mechanical Property

C

Si

Mn

P≤

S≤

Cr≤

Mo

(MPa)

(MPa)

L t
195GH ≤0.13 ≤0.35 ≤0.70 0.025 0.020 0.30 ≤0.08 320~440 ≥195 ≥27 ≥25
P235GH ≤0.16 ≤0.35 ≤1.20 0.025 0.020 0.30 ≤0.08 360~500 ≥235 ≥25 ≥23
P265GH ≤0.20 ≤0.40 ≤1.40 0.025 0.020 0.30 ≤0.08 410~570 ≥265 ≥23 ≥21
20MnNb6 ≤0.22 0.15~
0.35
1.00~ 1.50 0.025 0.020 - - 500~650 ≥355 ≥22 ≥20
16Mo3 0.12~
0.20
≤0.35 0.40~ 0.90 0.025 0.020 0.30 0.25~
0.35
450~600 ≥280 ≥22 ≥20

DIN 17175-79 SEAMLESS STEEL TUBES FOR ELEVATED TEMPERATURES (DIN17175)


Sections marked with a dot(●) contain details on agreements which shall, or may be, reached at the time of ordering.

Grade

Mfg. Process

Chemical composition(%)

C
Si
Mn
P
S
Ni
Cr
Mo
Others
St35.8
S
0.17Max
0.10~0.35
0.40~0.80
0.040Max
0.040Max
-
-
-
-
St45.8
S
0.21Max
0.10~0.35
0.40~1.20
0.040Max
0.040Max
-
-
-
-
17Mn4
S
0.14~0.20
0.20~0.40
0.90~1.20
0.040Max
0.040Max
-
0.30Max
-
-
19Mn5
S
0.17~0.22
0.30~0.60
1.00~1.30
0.040Max
0.040Max
-
0.30Max
-
-
15Mo3
S
0.12~0.20
0.10~0.35
0.40~0.80
0.035Max
0.035Max
-
-
0.25~0.35
-
13CrMo910
S
0.10~0.18
0.10~0.35
0.40~0.70
0.035Max
0.035Max
-
0.70~1.10
0.45~0.65
-
10CrMo910
S
0.08~0.15
0.50Max
0.40~0.70
0.035Max
0.035Max
-
2.00~2.50
0.90~1.20
-
14MoV63
S
0.10~0.18
0.10~0.35
0.40~0.70
0.035Max
0.035Max
-
0.30~0.60
0.50~0.70
V : 0.22~0.32
X20CrMoV121
S
0.17~0.23
0.50Max
0.40~0.70
0.030Max
0.030Max
0.30~0.80
10.00~12.50
0.80~1.20
V : 0.25~0.35
Grade

 

Materia

number

Tensile Test MPa or N/mm2

Remaks(Similar to JIS)

Possibility Temperature

Min Yield point

Tensile Strength

t 16Max 16<t 40Max
St35.8
1.0305
235
225
360~480

Impact Test at Room Temp.kgf-m
(STPT38)

 
St45.8
1.0405
-
245
410~530
23.5(STPT410, STB410)
 
17Mn4
1.0481
-
275
460~580
22.8
 
19Mn5
1.0482
-
315
510~610
23.5(STB52)
 
15Mo3
1.5415
275
275
450~600
23.5
 
13CrMo910
1.7335
295
295
440~590
23.2(STPA22, STBA22)
 
10CrMo910
1.7380
285
285
450~600
23.2(STPA24, STBA24)
 
14MoV63
1.7715
325
325
460~610
24.2
 
X20CrMoV121
1.4922
490
490
690~850
23.5
 
1. Scope

This standard applies to seamless tubes 1) including tubes for headers of heat-resistant steels according to Table 1 which are used in the construction of boilers, pipe-lines, pressure vessels and equipment for service up to 600∩ and at simultaneous high pressures, where the tototal stress and the relevant scaling conditions can raise or lower the temperature limit.

5. Designation and ordering

5.1. The code numbers for the grades of steel were formed in accordance with Sections 2.1.1.1. and 2.1.2.2 of the Explanations to DIN Normenheft 3, and the material numbers according to DIN 17 007 Part 2.

5.2. The code number or the material number for the steel grade shall be appended to the symbol for the product according to the following examples :

Example 1:

Designation of a seamless steel tubes of 38mm outside diameter and 2.6mm wall thickness according to DIN 2448 of steel St 35.8, material number 1.0385 :

Tabe DIN 2448 - sT 35.8 x 2.6

or Tabe DIN 2448 - 1.0305 - 38 x 2.6

5.3. The order shall not only specify the designation according to Section 5.2 but also in every case the desired total length and the desired acceptance inspection certificate and for unalloyed steel tubes also the steel grade. In addition, further details in compliance with the other Sections marked with a dot(≤) can be agreed at the time of ordering.

DIN 8528 Part 1 Weldability; metallic materials, definitions

Table1.

Summary of heat-resisting steels for seamless tubes, their chamicalcomposition (cast analysis) and colour designation of tubes

Steel grade
Chemical composition in weight %
Code number
Material
number
C
Si
Mn
P
S
Cr
Mo
Ni
V
Colour
designa-
tion 1)
St 35.8
1.0306
÷ 0.17
0.10 to 0.35 2)
0.40 to 0.80
0.040
0.040
white
St 45.8
1.0406
÷ 0.21
0.10 to 0.35 2)
0.40 to1.20
0.040
0.040
yellow
17Mn 4 3)
1.0481 3)
0.14 to 0.20
0.20 to 0.40
0.90 to 1.20
0.040
0.040
÷ 0.30
red
and
black
19Mn 5 3)
1.0482 3)
0.17 to 0.22 4)
0.30 to 0.60
1.00 to 1.30
0.040
0.040
÷ 0.30
yellow
and
brown
15Mn 3
1.5415
0.12 to 0.20 4)
0.10 to 0.35
0.40 to 0.80
0.035
0.035
0.25 to 0.35
yellow
and
carmine
red
13CrMo 4 4
1.7335
0.10 to 0.18 4)
0.10 to 0.35
0.40 to 070
0.035
0.035
0.70 to 1.10
0.45 to 0.65

yellow
and
shades or
silver

10CrMo 9 10
1.7380
0.08 to 0.15
÷ 0.50
0.40 to 070
0.035
0.035
2.00 to 2.50
0.90 to 1.20
red
and
green
14MoV 6 3
1.7715
0.10 to 0.18
0.10 to 0.35
0.40 to 0.70
0.035
0.035
0.30 to 0.60
0.50 to 0.70
0.22 to 0.32
red
and
shades
of silver
X20CrMoV 12 1
1.4922
0.17 to 0.23
÷ 0.50
÷ 1.00
0.030
0.030
10.00 to 12.50
0.80 to 1.20
0.30 to 0.80
0.25 to 0.35
blue

1) ≤ In normal practice both ends are painted with rings in the colour required. If requested it can be agreed at the time of ordering that the paint marking in the relevant colous should extend over the entire length of the tube.

2) The minimum silicon content is allwed to fall below 0.10%, when the steel is aluminium-killed, or vacuum-deoxidized.

3) These steels can only be considered for headers.

4) When the wall thicknesses ∶ 30mm the carbon content is permitted to be 0.02% higher.

Table 2.

Permissible deviations in the chemical composition of the sample analysis from the limits quoted in the cast analysis (see Table 1)

Element

Limits quoted in cast analysis
according to Table 1

Weight %

Permissible deviation 1)
of sample analysis from the
limits quoted in the cast
analysis according to Table 1

Weight %
C
÷0.24
【 0.02
Si
÷0.35
>0.35÷0.60
【 0.03
【 0.04
Mn
÷1.00
>1.00÷1.30
【 0.04
【 0.05
P
S

÷0.040

【 0.010
Cr
÷0.040÷2.00
>2.00÷2.50
∶1.00÷12.50
【 0.05
【 0.07
【 0.15
Mo
÷0.30
>0.30 ÷1.20
【 0.03
【 0.04
Ni
0.30÷0.80
【 0.03
V
0.22÷0.35
【 0.03
1) In a cast the deviation of an element of an elemcnt in a sample analysis is permitted to be below the minimum value or only above the maximum value of the range stipulated for the cast analysis, though not both at the same time.
Table 3. Scope of tests for seamless tubes in both quality grades and authority for the execution of the testings.
No
Extent of testing
According
to Section
Quality grade I
Quality grade II
Authority for the execution of the test 1)
1
Tensile test 2)
8.4.3
on two tubes per batch from the first two batches, on one tube from each subsequent batch
on two tubes per batch from the first two batches, on one tube from each subsequent batch
S.A.
2
Notch impact/bending test 3)
8.4.4

on tubes according to No.1

on tubes according to No.1
S.A.
3
Ring test 3)
8.4.6
on one end of the tubes acc to No.1
depending on the diameter (see Section 8.4.6) on 20% of the cut or part-lengths at one end or on 100% of the cut or part-lengths at both ends if necessary though also at one end, see Section 8.4.6.2.2.
M.W.
4
Non-destructive test
8.4.7
all tubes
M.W.
5
Visual inspection of tube surface
8.4.8
all tubes
all tubes
S.A.
6
Gauging
8.4.9
all tubes
all tubes

M.W.

7
Leakage test
8.4.10
all tubes
all tubes
M.W.
8
Grade identification test
8.4.11
all alloy tubes
M.W
9
Special tests 4)
No. 9, No. 10
8.4.2
subject to agreement
subject to agreement.
M.W
10
Hot tensile test
8.4.5
unless otherwise agreed 1 sample per cast and size or 1 sample per cast and annealed batch (heattreated batch)
unless otherwise agreed 1 sample per cast and size or 1 sample per cast and annealed batch (heattreated batch)
S.A.

1) S.A = subject to agreement; M.W. = Manufacturing works.

2) 1 specimen or 1 set of specimens suffices for batch sizes of up to 10 tubes.

3) The particulars on the size range governing the application of these test in Table 14 shall be complied with.

4)≤ Special tests shall be carried out only after agreement between manufacturer and customer.

Table 4. Limits governing the application of quality grades I and III
Quality
Outside diameter of tube
÷ 63.5mm
> 63.5mm
Temperature 2)
Permissible
working
pressure 3)
bar
Temperature 2)
Permissible
working
pressure 3)
bar
I
÷ 450
÷ 80
÷ 450
÷ 32
III
> 450
> 80
> 450
> 32

1) If pressure and temperature data do not belong to the same group, the higher group applies.

2) Temperature of conveyed fluid.

3) See DIN 2401 Part 1

Table 5. Mechanical properties of seamless of heat-resistant steels at room temperature
Steel grade
Tensile
strength

N/С

Yield point 1), 2)
for wall thickness
in mm

Elongation at
fravture
(Lo = 5*do)
Impact strength
(DVM specimens 3)
transverse
J
minimum
Code
number
Material
number
÷16 >16÷40 >40÷50
Long
Trans-
verse
N/С
minimum
%
minimum
St 35.8
1.0305
360 to 480
235
225
215
25
23
34
St 45.8
1.0405
410 to 530
255
245
235
21
19
27
17 Mo 4
1.0481
460 to 580
270
270
260
23
21
34
19 Mo5
1.0482
510 to 610
310
310
300
19
17
34
15 Mo 3
1.5415
450 to 600
270 4)
270
260
22
20
34
13CrMo 4 4
1.7335
440 to 590
290 4)
290
280
22
20
34
10CrMo 9 10
1.7380
450 to 600
280
280
270
20
18
34
14MoV 6 3
1.7715
460 to 610
320
320
310
20
18
41
X20CrMoV 12 1
1.4922
690 to 840
490
490
490
17
14
34 5)

1) For tubes of ÷ 30mm outside diameter and ÷ 3mm wall thickness the minimum values are by 10N/П lower.

2) For > 60mm wall thickness, the values of tubes from the steels St 35.8, St 45.8, 17Mn 4, 19Mn 5, 15Mo 3 and 14MoV 6 3 are subject to agreement; for wall thicknesses >60 to ÷ 80mm a minimum value of 270N/П or 260N/П applies fot tubes from the steels 13CrMo 4 4 and 10CrMo 9 10 and a minimum value of 490N/П for tubes from the steel X20CrMoV 12 1.

3) When testing longitudinal specimens (see Section 8.5.3) theminimum impact strength is 14J higher.

4) A 15N/П higher minimum value applies for ÷ 10mm wall thicknesses.

5) For hot extruded tubes the minimum value falls to 27J.

Table 6. Minimum 0.2% yield limit of seamless tubes at elevated temperatures.
Steel grade
Wall thickness
s
mm
0.2%-yield limit
at
Code number
Material number
200∩
250∩
300∩
350∩
400∩
450∩
500∩
550∩
N/П
minimum
St 35.8
1.0305
÷ 16
16<s÷40
40<s÷60 1)
185
180
175
165
160
155
140
135
130
120
120
115
110
110
110
105
105
105
-
-
-
-
-
-
St 45.8
1.0405
÷ 16
16<s÷40
40<s÷60 1)
205
195
190
185
175
170
160
155
150
140
135
135
130
130
130
125
125
125
-
-
-
-
-
-
17Mn 4 3)
1.0481
÷ 40
40<s÷60 1)
235
225
215
205
175
165
155
150
145
140
135
130
-
-
-
-
19Mn 5 3)
1.0482
÷40
40<s÷60 1)
255
245
235
225
205
195
180
170
160
155
150
145
-
-
-
-
15Mn 3
1.5415
÷40 2)
40<s÷60 1)
225
210
205
195
180
170
170
160
160
150
155
145
150
140
-
-
13CrMo 4 4
1.7335
÷ 40 2)
40<s÷60
60<s÷80 1)
240
230
220
230
220
210
215
205
195
200
190
180
190
180
170
180
170
160
175
165
155
-
-
-
10CrMo 9 10
1.7380
÷ 40
40<s÷60
60<s÷80 1)
245
235
225
240
230
220
230
220
110
215
205
195
205
195
185
195
185
175
185
175
165
-
-
-
14MoV 6 3
1.7715
÷ 40
40<s÷60 1)
270
260
255
245
230
220
215
205
200
190
185
175
170
160
-
-
X20CrMoV 12 1
1.4922
÷ 80
430
415
390
380
360
330
290
250

1) For wall thicknesses greater than 60mm the values are subject to agreemnet.

2) For wall thicknesses ÷ 10mm, 15 N/С higher minimum 0.2% yield limits apply at all temperatures.

Table 7. Provisional data 1) (change in diameter) in the ring expending test.
Steel grade
Expansion 2) in ring expanding test (provisional data)
For diameter ratios di/da
∶ 0.9
∶ 0.8
< 0.9
∶0.7
< 0.8
∶ 0.6
< 0.7
∶ 0.5
< 0.6
< 0.5
%
minimum
unalloyed steels
8
10
12
20
25
30
alloyed steels
6
8
10
15
20
30

1) These values shall regarded as initial recommendations which are based on a series of tests and will have to be reassessed in the light of future experience.

2) The deformability of ring expanding test specimens will additionally be assessed in terms of the appearance of the fracuture and fracture surfaces.

Table 8. Permissible wall thickness deviations for orders based on the outside diameter
Perttissible wall thickness deviations for outside diameters da
da ÷ 130mm
130mm <da ÷ 320 mm
320mm <da ÷ 660mm
÷2*Sn
÷2*Sn<s÷4*Sn
>4*Sn
÷0.05da
÷0.05da<s÷0.11da
>0.11da
÷0.05da
0.05da<s÷0.09da
>0.09da
+15%
-10%
+12.5%
-10%
【9%
+17.5%
-12.5%
【12.5%
【10%
+22.5%
-12.5%
+15%
-12.5%
+12.5%
-10%
Note : Sn = Norninal wall thickness according to DIN 2448
Table 9. Permissible wall thickness deviations for orders based on the bore
Pernissible wall thickness deviations for inside diameter di ∶ 200mm to ÷ 720mm and waill thicknesses s
÷ 0.05da
0.05<s÷0.10da
>0.10 da
+22.5%
-12.5%
+15%
-12.5%
+12.5%
-10%
Table 10. Permissible deviations on length
For orders specifying
Permissible
deviations on length
in mm
Productino lengths
1)
Random lengths
【 500
Exact lengths
10
0
from ÷ 6m (norninal size)
from > 6m ÷ 12m (norninal size)
【 15
0
from > 12m
subject to agreement
1) The products are supplied in production lengths which differ according to diameter, wall thickness and production plant.
Table 11. Permissible deflection
b in mm ÷ 100 >100÷ 200 >200÷ 300 > 300
f in mm ÷ 0.75 ÷ 1 ÷ 1.5 ÷ 2
Table 12. Reference data for hot forming, normalising and hardening and tempering of high-temperature seamless tube steels 1)
Steel grade

Hot forming

Normalising

Hardening and tempering
Code number
Material
number
Hardeing
temperature 2)

Tempering
temperature

St 35.8
1.0305
between 1100
and 850 3)
900 to 930
-
-
St 45.8
1.0405
870 to 900
-
-
17Mn 4 3)
1.0481
880 to 910
-
-
19Mn 5 3)
1.0482
880 to 910
-
-
15Mn 3
1.5415
910 to 940
-
-
13CrMo 4 4
1.7335
-
910 to 940
660 to 730
10CrMo 9 10
1.7380
-
900 to 960
700 to 750
14MoV 6 3
1.7715
-
950 to 980
690 to 730
X20CrMoV 12 1
1.4922
-
1020 to 1070
730 to 780

1) The work pieces must attain the specified temperature over the entire cross-section. Provided this has definitely been done further holding at these temperatures is unnecessary when normalising and hardeing.

The temperatures laid down for tempering shall be held for approximately 30minutes minimum for the steels 13CrMo 4 4 and 10CrMo 9 10 and for 1 hour minimum for the steels 14MoV 6 3 and X20CrMoV 12 1, with the annealing time being countedfrom the momentwhen the lower limit of the given temperature range is reached.

2) Cooling in air or controlled atmosphere. Accelerated cooling e.g in liquid, can become necessary at greater wall thicknesses.

3) The temperature can drop to 750∩ during processing.

4) In addition to given quenching and tempering treament the following sequenece of treatment can be considered for the stee :

900∩ to 960∩/furnace to 700∩ ∶1 hour 700∩/air.

Table 13. Welding methods and data for the heat-treatment after welding
Steel grade
Welding methods
Annealing temperatures 1)
and holding time 2), 3)
at the required heat-treatment
after welding
Code number
Material
number
St 35.8
1.0305
All fusion welding methods
and flash butt-welding
520 to 600
St 45.8
1.0405
520 to 600
17Mn 4 3)
1.0481
520 to 580
19Mn 5 3)
1.0482
520 to 580
15Mn 3
1.5415
530 to 620
13CrMo 4 4
1.7335
600 to 700
10CrMo 9 10
1.7380
650 to 750
14MoV 6 3
1.7715
All fusion welding methods,
except gas fusion welding
690 to 730
X20CrMoV 12 1
1.4922
720 to 780

1) If required (see Section 7.3) these temperatures apply also to annealing treatments after cold forming.

2) The holding time for the specified temperatures depends on the thickness of the workpieces. A minimum holding time of 15minutes is recommended for a thickness ÷15mm, a minimum holding time of 30minutes, for thicknesses > 15 to÷30mm and a minimum holding time of 60minutes for thicknesses >30mm.

At thicknesses >30mm a minimum holding time of 90 minutes is required for 10CrMo 9 10. Furnace anneals should be performed in the mid-range of the specified temperatures. For local anneals the external surface shall be at the maximum temperature.

3) The annealing treatment shall also comply with the instructions f the manufacturer of the filier metals.

4) Judging from the experience gained up t nw, repeated annealing treatments shall not exceed a total holding time of 10 hours, with the subsequent annealing treatments being performed in the lower temperature range when the material is in the air-hardaned condition.

5) Welding shall be followed by cooling below 150∩ (though for thick-walled tubes not below 100∩).
The following holding times are recommended :

÷8mm thickness 30minutes minimum
>8÷30mm thickness 60minutes minimum
>30÷60mm thickness 120minutes minimum
>60mm thickness 180minutes minimum

Table 14. Size ranges for the application of mechanical and technological methods for testing tubes in both qualities
Tube diameter
mm
Norminal wall thickness of the tubes
external
internal
<2mm
∶2mm÷16mm
>16mm÷30mm
>30mm÷40mm
>40mm
÷21.3
÷15
Tensile test
Ring flattening
test
Tensile test
Ring flattening
test
-
-
-
> 21.3 ÷ 148
>15
Tensile test
Ring flattening
test
Tensile test
Notch
impact/bending
test 1)
Ring expanding
test
Tensile test
Notch
impact/bending
test 1)
Ring expanding
test
Tensile test
Notch
impact/bending
test 1)
Ring expanding
test
Tensile test
Notch
impact/bending
test 1)
Ring expanding
test

> 146 3)

Tensile test
Notch
impact/bending
test 1)
Ring tensile test
Tensile test
Notch
impact/bending
test 1)
Ring tensile test
2)
Tensile test
Notch
impact/bending
test 1)
Ring tensile test 2)
Tensile test
Notch
impact/bending
test

1) Only for tubes manufactuered from steels 14MoV 6 3 and X20CrMoV 12 1 in nominal thicknesses > 10mm and for tubes manufactuered from steel 15Mo 3 in nominal thicknesses >20mm.

2) Tubes ÷ 100mm inside diameter shall bering flattening-tested instead of ring tensile-tested.

3) This limit applies also for tube, orders for which are based on the inside diameter, provided the nominal outside diameter > 146mm.

Appendix A
The following Table gives tentative figures for the ong time high teme high temperature strength of the steels used for seamless tubes. The figures listed are mean values for the scatter ranger representing results so far available. These mean values will be examined from time to time and amended where necessary as further results become available. From the data so far available from long time creep tests it can be assumed that the bottom limit of this scatter range at the stated temperatures for the steel grades listed is about 20% lower than the mean value quoted.
Table A.1.
Steel grade

Code number
Temperature

1%-time yield limit 1), 2)
Creep strength 2),3)
for
10 000h
N/П
100 000h
N/П
10 000h
N/П
100 000h
N/П
200 000h
N/П

St 37.8
St 42.8

380
390
164
150
118
106
229
211
165
148
145
129
400
410
420
430
440
136
124
113
101
91
95
84
73
65
57
191
174
158
142
127
132
118
103
91
79
115
101
89
78
67
450
460
470
480
80
72
62
53
49
42
35
30
113
100
86
75
69
59
50
42
57
48
40
33
17Mn 4
19Mn 5
380
390
195
182
153
137
291
266
277
203
206
181
400
410
420
430
440
167
150
135
120
107
118
105
92
80
69
243
221
200
180
161
179
157
136
117
100
157
135
115
97
82
450
460
470
480
490
93
83
71
63
55
59
51
44
38
33
143
126
110
96
84
85
73
63
55
65
47
70
60
52
44
37
500
49
29
74
41
30
15 Mo 3
450
460
470
480
490
216
199
182
166
149
167
146
126
107
89
298
273
247
222
196
245
209
174
143
117
228
189
153
121
96
500
510
520
530
540
132
115
99
84
(70)
73
59
46
36
(28)
171
147
125
102
(82)
93
74
59
47
(38)
75
57
45
36
(28)
550
(59)
(24)
(64)
(31)
(25)

1) This being the stress referred to the original cross-section which leads to a permanent elongation of 1% after 10000 or 100000 hours (h).

2) A bracket denotes that the steel should preferably no longer be used for continuous service t the relevant temperature.

3) This being the stress referred to in the original cross-section which results in rupture after 10 000, 100 000 or 200 000 hours (h).


Table A.1. (continued)
Steel grade

Code number
Temperature

1%-time yield limit 1), 2)
Creep strength 2),3)
for
10 000h
N/П
100 000h
N/П
10 000h
N/П
100 000h
N/П
200 000h
N/П
13CrMo 4 4
450
460
470
480
490
245
228
210
193
173
191
172
152
133
116
370
348
328
304
273
285
251
220
190
163
260
226
195
167
139
500
510
520
530
540
157
139
122
106
90
98
83
70
57
46
239
209
179
154
129
137
116
94
78
61
115
96
76
62
50
550
560
570
76
64
53
36
30
24
109
91
76
49
40
33
39
32
26
10CrMo 9 10

450
460
470
480
490
240
210
200
180
163
166
155
145
130
116
306
286
264
241
219
221
205
188
170
152
201
186
169
152
136
500
510
520
530
540
147
132
119
107
94
103
90
78
68
58
196
176
156
138
122
135
118
103
90
78
120
105
91
79
68
550
560
570
580
590
83
73
65
57
50
49
41
35
30
26
108
96
85
75
68
68
58
51
44
38
58
50
43
37
32
600
44
22
61
34
28
14MoV 6 3
480
490
243
219
177
155
299
268
218
191
182
163
500
510
520
530
540
195
178
161
146
133
138
122
107
94
81
241
219
198
179
164
170
150
131
116
100
145
127
109
91
76
550
560
570
580
120
109
(98)
(88)
69
59
(48)
(37)
148
134
(121)
(108)
85
72
(59)
(46)
61
48
(37)
(28)

For footnotes 1), 2) and 3) see page 18

Table A. 1.(continued).
Steel grade

Code number
Temperature

1%-time yield limit 1), 2)
Creep strength 2),3)
for
10 000h
N/П
100 000h
N/П
10 000h
N/П
100 000h
N/П
200 000h
N/П
X20CrMoV 12 1
470
480
490
324
299
269
260
236
213
368
345
319
309
284
260
285
262
237
500
510
520
530
540
247
227
207
187
170
190
169
147
130
114
294
274
253
232
213
235
211
186
167
147
215
191
167
147
128
550
560
570
580
590
151
135
118
103
90
98
85
72
61
52
192
173
154
136
119
128
112
96
82
70
111
96
81
68
58
600
610
620
630
640
75
64
53
44
36
43
36
30
25
20
101
87
73
60
49
59
50
42
34
28
48
40
33
27
22
650
29
17
40
23
18
Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 106- Seamless C-Steel Pipe for High Temperature Service

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
NBN Type
NBN Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
Grade A K02501 SPHT 38 / STPT 370 D3570 / G3456 (16)(30) St 35.8 17175 1.0305 3602 HFS 360 D 37-2 629 (3b)(9) TU 37C A49-213 C 14 5462
Grade B K03006 SPHT 42 / STPT 410 D3570 / G3456 (16)(30) St 45.8 17175 1.0405 3602 HFS 410 D 42-2 629 (3b)(9) TU 42C A49-213 C 18 5462
Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

ASTMSTANDARD: A 179 - Seamless Cold Drawn Low-C Steel Heat Exchanger and Conderser Tubes

UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
NBN Type
NBN Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
K01200 STBH 340 / STB 35 D3563 / G3461 St 35.4 1629

1.0309

3606 CFS 320 D 37-2 629 (3b) TU 37 C A49-215 (3a) C 14 5462
St 35.8 17175 1.0305 Plus DIN 2391 (18) Gutegard C.NBK

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

ASTMSTANDARD: A 192 -Seamless C-Steel Boiler Tube for High Pressure Service

UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
NBN Type
NBN Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
K01201 STBH 340 / STB 340 D3563 / G3461 (30) St 35.8 17175 1.0305 3059 320 (27)(30) D45 837 (27) TU 37C A49-213 (27) C14 5462

(27)


Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 199 - Seamless Cold Drawn Intermediate Alloy Steel Heat Exchange and Condenser Tubes

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
NBN Type
NBN Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
T5
K41545 STHA 24 / STBA 25 D3572 / G3462 (35) 12 CrMo 19 5 1.7362 (3a) 3606 CFS 625 (35) X 12 Cr Mo 5 837 (35) Z 12 CD 5.05 (3a) (3); dalmine 234
T11
K11597 STHA 22 / STBA 23 D3572 / G3462 (35) 13 CrMo 44 17175 1.7335 (8) 3606 CFS 621 (35) 10 CD 5.05 (3a) (3); dalmine 227(10)
T22
K21590 STHA 23 / STBA 24 D3572 / G3462 (35) 10 CrMo 9 10 17175 1.7380 3606 CFS 622 (35) 10 Cr Mo 9 10 837 (35) 10 CD 9.10 (3a) 12CrMo 9 10 5462 (10)0

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 200- Seamless Intermediate Alloy Steel Still Tubes for Refinery Service

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
NBN Type
NBN Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
T 5
K41545 STHA 24 / STBA 25 D3572 / G3462 (32) 12 CrMo 19 5 1.7362 (3a) 3604 625

(30)(32)

X12CrMo 837 (32) TU Z 12 CD A49-213 (32) Dalmine 234(3b)
T 11
K11597 STHA 22 / STBA 23 D3572 / G3462 (32) 13 CrMo 44 17175 1.7335 (8) 3604 621 (30)(32) 5.05 A49-213 (32) Dalmine 227(3b)
T 22
K2159 STHA 23 / STBA 24 F3572 / G3462 (32) 10 CrMo 9 10 17175 1.7380 3606 622 (30)(32) 10 CrMo 9 10 837 (32) TU 10 CD 5.05 A49-213 (32) 12CrMo 9 10 5462 (3b)
TU 12 CD 9.10

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 210 - Seamless Medium-Carbon Steel Boiler and Superheater Tubea

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
NBN Type
NBN Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
Grade A-1 K02707 STHA 410 / STB 410 D3563 / G3461 (30)(24) St 45.8 17175 1.0405 3059 320 (30) D45 837 (13) TU A42-C A49-213 (6)(13) C 18 5462 (38)

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 213 - Seamless Alloy Steel Boiler and Heat Exchanger Tubes

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
Grade T 5 K41545 STHA 24 / STBA 25 D3572 / G3462 (30)(24) 12 CrMo 19 5 1.7362 (3a) 3606 625 (30) TUZ12C A49-213 (3a)(32) Dalmine 234(3b)
Grade T 11 K11597 STHA 22 / STBA 24 D3572 / G3462 (30)(24) 13 CrMo 44 17175 1.7335 (8)(32) 3606 621 (30) 5.05 (3b)(32)

Dalmine 227(3b)

Grade T 12 K11562 STHA 21 / STBA 22 D3572 / G3462 (30)(24)

13 CrMo 44

17175 1.7335 (32) 3606 620 (30) TU 10 CD 5.05
Grade T 22 K21590 STHA 23 / STBA 24 D3572 / G3462 (30)(24) 10 CrMo 9 10 17175 1.7380 (32) 3606 622 (30)(32) (3a)(32) 12 CrMo 9 10 5462 Dalmine 235(3b)
TP 304 S30400 STS 304 TB / SUS 304 TB D3577 / G3463 (30)(24) X5 CrNi 18 9 17440 1.4301 (3b) 3606 304S25 (30) TU 10 CD 9.10 A49-218 (3b) X5 CrNi 18 10 6904 (3b)
TP 304L S31403 STS 304LTB / SUS 304LTB D3577 / G3463

(30)(24)

X2 CrNi 18 9 17440 1.4306 (3b) 3606 304S22 (30) Z 6 CN 18.09 A49-218 (3b) X2 CrNi 18 11 6904 (3b)
TP 310 S31000 STS 310STB/SUS 210STB D3577 / G3463 (30)(24) X12 CrNi 2528 1.4845

WBL-470(3b)

(3) Z 2 CN 18.09 (3) X22CrNi 25 20 6904 (3b)(11)
TP 316 S31600 STS 316TB / SUS 316TB D3577 / G3463 (30)(24) X5 CrNiMo 18 10 17440 1.4401 (3b) 3606 316S30 (30) A49-218 (3b) X5 CrNiMo 17 12 6904 (3b)
TP 316L S211603 STS 316LTB /SUS 316LTB D3577 / G3463 (30)(24) X2 CrNiMo 18 10 17440 1.4404 (3b) 3606 316S29 (30) Z 6 CND 17.12 A49-218 (3b) X2 CrNiMo 17 12 6904 (3b)
TP 321 S32100 STS 312TB/SUS 321TB D3577 / G3463 (30)(24) X10 CrNiTi 18 9 17440 1.4541 (3b) 3606 321S22 (30) Z2 CND 17.13 A49-218 (3b) X6 CrNiTi 18 11 6904 (3b)
TP 347 S34700 STS 347TB / SUS 347TB D3577 / G3463 (30)(24) X10 CrNiNb 18 9 17440 1.4550 (3b) 3606 347S17 (30) Z6 CNT 18.11 A49-218 (3b) X6 CrNiNb 18 11 6904 (3b)
Z 6 CNNb 18.11

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 335 - Seamless Ferritic Alloy Steel Pipe for High Temperaure Service

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks
P1 K11522 SPA 12 / STPA 12 D 3573 / G 3458 (16) 16 Mo 5 1.5423 (3a) (3) TU 15 D 3 A49-213 16 Mo 5 5462
P5 K41545 SPA 25 / STPA 25 D 3573 / G 3458 (16) 12 CrMo 19 5 1.7362 WBL-590(3b) 3604 FHS 625 CAT.2 TU Z12 CD 5-05 A49-213 Dalmine234(3b)
P9 S50400 SPA 26 / STPA 26 D 3573 / G 3458 (16) (3) HFS 629-470 CAT.2 TU Z 10 CD 9 A49-213
P11 K11597 SPA 23 / STPA 23 D 3573 / G 3458 (16) 13 CrMo 44 17175 1.7335 (8) 3604 HFS 621 CAT.2 TU 10 CD 5.05 A49-213 Dalmine227(3b)
P12 K44562

SPA 22 / STPA 22

D 3573 / G 3458 (16) 13 CrMo 44 17175 1.7335 3604 HFS 620-440 CAT.2 (3) 14 CrMo 3 5462 (3b)
P22 K21590 SPA 24 / STPA 24 D 3573 / G 3458 (16) 10 CrMo 9 10 17175 1.7380 3604 HFS 622 CAT.2 TTU 10 CD 9.10 A49-213 12 Cr Mo 9 10 5462 (3b)

JIS Number and Corrensponding Foreign Standards
JIS
ASTM
BS
DIN
NF
ISO

Index Number

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

G3456

STPT370
(STPT38)

C
A106
GrA
C
3602
HFS360
C
17175
St35.8
C
A49-211
TU37b
C
2604/2
TS5
C
C004
"
CFS360
C
17177
St37.8
C
A49-213
TU37c
C
2604/3
TW9H
C
"
ERW360
C
A49-243
TU37c
C
"
CEW360
C

STPT410
(STPT42)

 

C
A106
GrB
C
3602
HFS410
C
17175
St45.8
C
A49-211
TU42b
C
2604/2
TS9H
C
"
CFS410
C
17177
St42.8
C
A49-213
TU42c
C
"
ERW410
C
A49-243
TU42c
C
"
CEEW410
C

STPT480
(STPT42)

C
A106
GrC
C
3602
HFS460
C
A49-211
TU48b
C
2604/2
TS14
C
"
CFS460
C
A49-213
TU48c
C
"
ERW460
C
"
CEEW460
C
DIN/EN steel pipe
GB steel pipes
JIS seamless pipes


Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


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