Maily used for ships, boiler, pressure vessel, oil tank, Bridges, power plantequipment,
lifting transportation machinery and otherhigh load of welded structure,etc.We can supply many kinds of material and wecan offer different width and length plates according to yourrequirement
2,Chemical Composition
C | Si | Mn | P | S | V | Nb | Al | Ti | |
Q345A | ≤0.20 | ≤0.55 | 1.00-1.60 | ≤0.045 | ≤0.045 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
Q345B | ≤0.20 | ≤0.55 | 1.00-1.60 | ≤0.040 | ≤0.040 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
Q345C | ≤0.20 | ≤0.55 | 1.00-1.60 | ≤0.035 | ≤0.035 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
Q345D | ≤0.18 | ≤0.55 | 1.00-1.60 | ≤0.030 | ≤0.030 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
Q345E | ≤0.18 | ≤0.55 | 1.00-1.60 | ≤0.025 | ≤0.025 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
| thickness | test temperature(°c) | Elongation(%) | proof stress(Mpa) | Tensile strenth(Mpa) | |
Q345A | ≤16 | - | 21 | 345 | 470-630 |
| Q345B | ≤16 | 20 | 21 | 345 | 470-630 |
| Q345C | 16-35 | 0 | 22 | ≥325 | 470-630 |
Q345D | 35-50 | -20 | 22 | ≥295 | 470-630 |
| Q345E | 50-100 | -40 | 22 | ≥275 | 470-630 |
.We,HeNan JianHui Constraction Marchinary Co.,Ltd is an integration group involvesindustry ,process and marketing of steel .Our main products include Carbon Steel,Alloy Steel ,Gear Steel ,Bearing Steel ,Spring Steel ,Long Steel Products,Pip&Tubes ,Stainless Steel Products etc .
Wehave 4000--5000tons our own steel stocks , if you have any interests ,pleasetouch us .We look forward to establishing mutually beneficial trading relationswith you .
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