

EN10216-3 QT low temperature seamless steel tubes pipes P620QL
Alloy fine grain steel tubes for pressure purposes with Quenched and Tempered in European standard EN 10216-3
Relative steel grades:P275NL1,P275NL2,P355N,P355NH,P355NL1,P355NL2,P460N,P460NH,
P460NL1,P460NL2,P620Q,P620QH,P620QL,P690Q,P690QH,P690QL1,P690QL2.
Main application:Non-alloy and alloy high temperature seamless steel pipes more used for building boilers and pressure vessels’parts,power plants.P620QL low alloy seamless steel pipes have to be done Quenching and Tempering heat treatment.
Rolling range:A) Diameter:1/2’’ to 36’’ B) Schedule:SCH20-SCHXXS C) O.D.:13.7MM-914.4MM D) Wall Thickness: 2.11MM-60MM E) Length: Max.17MM
Test and Certificates:Low temperature impacting test,NDE (Non-Destructive Testing),Ultrasonic examination,Heat treatment,Bending test,Eddy test,Hydrostatic test,High tension test.Mill test certificates with EN 10204 3.1 OR 3.2 approved by third party inspection TUV,LR,ABS,SGS,PED,etc.
Want to get more information about seamless steel pipes,please CONTACT XINSTEEL NOW
►Chemical composition for P620QL steel tubes (Cast Analysis Max%)
Main chemical elements composition of P620QL | ||||||||
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni | |
0.20 |
0.60 |
1.00-1.70 |
0.025 |
0.015 |
0.30 |
0.10 |
0.80 | |
Al total min. |
Cu |
N |
Nb |
Ti |
V |
Nb+Ti+V | ||
0.020 |
0.30 |
0.020 |
0.05 |
0.040 |
0.20 |
0.22 |
►Mechnical property for P620QL pressure vessel steel pipes:
Yield strength (≥Mpa) Wall Thickness |
Tensile strength (≥Mpa) Wall Thickness | |||||||
T≤20 |
20<T≤40 |
40<T≤50 |
50<T≤65 |
65<T≤80 |
80<T≤100 |
T≤20 |
20<T≤40 |
40<T≤65 |
620 |
580 |
540 |
500 |
- |
- |
740-930 |
690- 860 |
630- 800 |