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DIN17175/EN10216 standard specification

DIN 17175 steel pipes are used in boiler installations, high-pressure pipelines and tank construction and special machinery for both high temperature and high-pressure devices.
Application Features Specifications Chemical Composition Mechanical Properties
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.
Application:
used for the pipelines of boiler industry.

Packing:
Inner packing:Caps on two ends of every pipe
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements.

Surface treatment:Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Marking: as per customer’s requirement
Read more:
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

Condition on delivery:
Term Symbol Explanation
Cold-finished/hard
(cold-finished as-drawn)
BK No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft
(lightly cold-worked)
BKW After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed GBK After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized NBK The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.



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