St35.8 seamless steel pipe is a boiler tube suitable for the German standard DIN17175. It has excellent heat resistance, and it still shows good mechanical properties even under long-term load. It is also considered to be a heat-strength steel.
DIN17175 St35.8 seamless steel pipe Chemical Composition
|
Standard |
Grade |
Chemical Components (%) |
|
C |
Si |
Mn |
P |
S |
Mo |
Cr |
|
DIN17175 |
St 35.8 |
≤0.17 |
0.10-0.35 |
0.40-0.30 |
≤0.040 |
≤0.040 |
/ |
/ |
DIN17175 St35.8 seamless steel pipe Mechanical Properties
|
Standard |
Grade |
Mechanical properties |
|
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation (%) |
|
DIN17175 |
St 35.8 |
360-480 |
≥235 |
≥25 |
Applications of DIN 17175, St35.8 Seamless Steel Pipe
DIN17175 St35.8Heat seamless steel pipe is used for high pressure boiler (working pressure generally above 9.8 Mpa, working temperature between 450 ℃ ~ 650 ℃) of the heating surface pipe, economizer, superheater, reheater tube, petrochemical industry, etc.
DIN17175 St35.8 seamless steel pipe Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
DIN17175 St35.8 seamless steel pipe packings:
Inner packing:Caps on two ends of every pipe. Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
DIN17175 St35.8 seamless steel pipe Manufacturing process:
Tubes to this standard shall be manufactured by hot or cold rolling, hot pressing, hot or cold drawing
The steels used for tubes shall be made by the oxygen blowing process, the open hearth furnace or the electric furnace.
All steels shall be killed.
For more information about DIN17175 St35.8 seamless steel pipe, please feel free to contact us.
