Q345C grade size 4*1219*2438mm Steel plate

Short Description:

Customized Q355C steel plate with low quantity, size 4x1219x2438mm

Product Detail

Product Tags


Standard:GB/T 1591-2018

Grade:Q345B/Q355B, Q345C/Q355C, Q345D/Q355D

Deliver Condition:Hot rolling

Size Range: Thickness 2MM-120MM
Tolerance: According to GB/T 1591-2018
Length:As request
Certificate: Mill Certificate
Chemical Composition:
Grade C Si Mn P S Nb V Ti Cr Ni Cu N Mo Als
Q345B ≤0.20 ≤0.50 ≤1.70 ≤0.035 ≤0.035 ≤0.07 ≤0.15 ≤0.20 ≤0.30 ≤0.50 ≤0.30 ≤0.012 ≤0.10 /
Q345C ≤0.20 ≤0.50 ≤1.70 ≤0.035 ≤0.030 ≤0.07 ≤0.15 ≤0.20 ≤0.30 ≤0.50 ≤0.30 ≤0.012 ≤0.10 ≥0.015
Q345D ≤0.18 ≤0.50 ≤1.70 ≤0.035 ≤0.025 ≤0.025 ≤0.15 ≤0.20 ≤0.30 ≤0.50 ≤0.30 ≤0.012 ≤0.10 ≥0.015

Mechanical Properties:

Grade Yeild Strength    min Mpa Tensile Strength Elongation Impact Test
T in mm Mpa
≤16 >16 ≤30 >30 Impact/J
Q345B 345 325 295 470-630 ≥20 20 34
Q345C 345 325 295 470-630 ≥21 0 34
Q345D 345 325 295 470-630 ≥21 -20 34
Inspection Picture:
1 2

Q345C is a kind of low-alloy high-strength structural steel: (corresponding to the old grades before 88 years: 16Mn,

12MnV, 14MnNb, 16MnRe, 18Nb five grades merged) Q is the first letter of the Chinese pinyin of the Chinese

character “yield”, indicating the strength of yield 345 is the specific value of yield strength: 345MPa The C at

the back is the quality grade symbol of the steel of this strength level, generally divided into A, B, C, D, E and

other levels (the higher the level, the higher the level) Note: The five grades A, B, C, D, E do not correspond

to the previous five steel grades, but the quality grades. The main difference is that the requirements for impact

energy are different: Q345-A: Impact power is not required Q345-B: Requirements for impact energy at room

temperature Q345-C: requires 0℃ impact energy Q345-D: requires an impact energy of -20℃ Q345-E: requires

-40℃ impact energy It can be seen that the following steel grades can be used at low temperatures

Mill Certificate:
MTC - 1 MTC - 2
Raw material is from Top manufacture which promise the high quality.
Accurate technology confirm the exact size tolerance.
Efficient sales team give you proper proposal.
After-sales team offer and support for product guarantee.
Quality Control:
Our Service:
Q1: Are you manufacture or Trader
A: We are both manufacture and trader
Q2: Can you offer sample?
A: Sample small one can be offered by free, but buyer should pay the express fee
Q3: Can you offer processing service?
A: We can offer cutting, drilling, painting, coat powder etc…
Q4: What is your advantage on steel?
A: We can customize steel structure accoridng to buy’s drawings or request.
Q5: How about your logistic service?
A: we have professional logistic team who has rich experience on shipping, can offer the steady and quality ship line.

We have built a long-term and stable cooperation relation with customers in domestic , such as Shanghai, Jiangsu,

Zhejiang, Anhui, Shandong, Jiangxi, Qinghai, Liaoning, Hainan and so on.


For overseas, our main client from South Asia, Africa, South America like Singapore, Vietnam,  Brazil, Ghana,

New Zealand, Spain, Mauritius, Dubai etc.

  • Previous:
  • Next:

  • Related Products