Q345 steel is a low alloy high-strength structural steel commonly used in fields such as construction, bridges, aerospace, mechanical manufacturing, petroleum drilling, chemical equipment, etc. It is a commonly used steel in China, using the grade Q345 and complying with the national standard GB/T 1591-2008.
Mild steel / Medium carbon steel / High carbon steel
Surface
Coating, Pickling, Phosphating
Processing
Welding, Cutting, Bending, Decoiling
Delivery time
10-30 days subject to the clients' requirement and quantity
Package
clients' requirement and Standard export sea-worthy packing
MOQ
1 ton
Available Size Range
Dimension
Range
Thickness
Cold Rolled: 0.2~6mm Hot Rolled: 3~12mm
Width
Cold Roled: 50~1500mm Hot Rolled: 20~2000mm or customer's request
Length
Coil or as customer's request
Chemical Composition
Chemical Composition (≤%)
Steel Grade
Quality Grade
C
Si
Mn
P
S
Cr
Ni
Mo
Cu
Ti
N
Nb
V
B
Al, ≥
Q345
Q345A
0.20
0.50
1.70
0.035
0.035
0.30
0.50
0.10
0.30
0.20
0.012
0.07
0.15
–
–
Q345B
0.035
0.035
Q345C
0.030
0.030
0.015
Q345D
0.18
0.030
0.025
Q345E
0.025
0.020
Physical Properties
Density: 7.85 g/cm3 (0.284 lb/in3)
Melting point: 1450-1530 °C (2640-2800 °F)
Application
Q345 steel has high strength, excellent weldability, cold & hot workability and certain corrosion resistance. It is widely used in bridges, ships, boilers, pressure vessels, petroleum storage tanks, lifting transport machinery and other high-load welded structural parts.
A: The products will be delivered ASAP on the basis of the quality assurance.Generally,samples order's delivery time is 5-10 days.Container orders are about 15-20 days.