Q345E low temperature seamless steel pipe

Q is the yield strength;
345 represents the yield strength value, in MPa;
E represents the grade (passed the -40 degree impact test);

Executive standard: GB/T 1591-2008; :
Standard GB/T 1591-2018 Low-alloy high-strength structural steel replaces Q345 with Q355 and related requirements.

Q345E steel pipe has good comprehensive mechanical properties, good weldability, cold and hot working properties and corrosion resistance, and has good low temperature toughness

Chemical composition of Q345E steel pipe:
C:≤0.18
Si: 0.20-0.60
Mn: 1.00-1.60
P:≤0.025
S:≤0.025
Ni:≤0.30
Cr≤0.30
Cu:≤0.20
Al:≥0.015
V: 0.02-0.15
Nb: 0.015-0.06

Mechanical properties of Q345E steel pipe:
Tensile strength: 490-675
Yield strength: ≥345
Elongation: ≥22

Q345E steel pipe application:
Ships, boilers, pressure vessels, oil storage tanks, bridges, power station equipment, hoisting and transporting machinery and other welded structural parts with higher loads

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