DIN1630 St 44.4 seamless steel pipe Introduction:St 44.4 seamless steel pipe tube is widely used seamless steel pipe tube products.KATALOR has a large St 44.4 steel pipe stock in China.KATALOR steel can supply St 44.4 steel tube/pipe stock St 44.4 seamless steel pipe tube carbon contents is 0.20%.
DIN1630 St 44.4 seamless steel pipe application:
St 44.4 seamless steel pipe tube can be used in gas and oil transportation.St 44.4 seamless steel pipe tube used in mechanical and manufacture, steel structure, ship building, bridging, automobile chassis.
DIN1630 St 44.4 seamless steel pipe main market
Mid East South America South Asia Africa Southeast Asia Northern Europe Western Europe etc
DIN1630 St 44.4 seamless steel pipe specification
ERW; outer diameter:21.3-660mm thickness:6-25mm
LSAW; outer diameter:325-1524mm thickness:6-50mm
SSAW: outer diameter:219-3200mm thickness:5-25mm
DIN1630 St 44.4 seamless steel pipe chemical composition
Chemical composition |
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Steel grade |
Type of deoxidation (RR.fully killed) |
Chemical composition, % by mass |
Addition of nitrogen fixing elements (e.g.no less than 0.020% Al total) |
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Symbol |
Material number |
C |
Si |
Mn |
P |
S |
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|
max |
max |
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|
St 44.4 |
1.0257 |
RR |
0.20 |
0.35 |
>=0.40 |
0.040 |
0.040 |
Yes |
DIN1630 St 44.4 seamless steel pipe mechanical property
Steel grade |
Upper yield stress Reh for wall thickness in mm |
Tensile strength Rm N/mm2 |
Elongation after fracture A5 |
Impact energy ISO V-notch test pieces at+20°C |
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Symbol |
Material number |
Up to 16 |
16-40 |
40-65 |
longitudinal |
transverse |
longitudinal |
transverse |
|
|
N/mm2 min |
% min |
/ min |
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|
St 44.4 |
1.0257 |
275 |
265 |
255 |
420 to 550 |
21 |
19 |
43 |
27 |
As a DIN1630 St 44.4 seamless steel pipe manufacturer, we usually keep hundreds tons DIN1630 St 44.4 seamless steel pipe in stock each month. Based on these stock source, our advantage has spread into steel process like : cutting ( any size and any shape ) drilling, welding, milling, welding. We can also provide the DIN1630 St 44.4 seamless steel pipe in machining parts and steel structure.
