Q345qNHE bridge weathering plate, Q345qDNH steel plate fixed rolling, Q345qENH bridge plate introduc

Q345qNHE bridge weathering plate, Q345qDNH steel plate fixed rolling, Q345qENH bridge plate introduc

Q345qNHD bridge weathering plate belongs to the bridge structure weathering steel plate, and the implementation standard of Q345qNHD steel plate is; GB/T714 special technical conditions, additional requirements: flaw detection, Z-direction performance, carbon equivalent, hardness test, etc.

Q345qDNH steel plate rolling: Wugang Xiangyang

Q345qDNH steel plate grade indication:

"Q": the first letter of the word "yield" in Chinese pinyin indicating the yield strength of steel;

"345": indicates that the yield strength is 345, in MPa;

"Q": The first letter of the Chinese pinyin character "bridge" that represents the steel used for the bridge;

The quality grade of "D" is C, and the 0°C impact test

"N" is the Chinese pinyin letter of the word "resistance" of the weathering steel plate;

The "Hou" character of "H" weathering steel plate is

Q345qDNH Chemical composition:

Q345qDNH steel plate carbon content C: ≤0.15

Q345qDNH steel plate silicon content Si: ≤0.55

Q345qDNH steel plate manganese content Mn: 01.0-1.50

Q345qDNH steel plate phosphorus content P: ≤0.025

Q345qDNH steel plate sulfur content S: ≤0.01

Q345qDNH steel plate nitrogen content N: ≤0.012

Q345qDNH steel plate chromium content Cr: 0.4-0.7

Q345qDNH steel plate copper content Cu: 0.2-0.4

Application of

Q345qDNH steel plate: Q345qDNH steel plate has good fatigue resistance、- - certain low temperature toughness and atmospheric corrosion resistance. Q345qDNH steel plate is a steel plate mainly used to erect railway or highway bridges