Q345 Hot Formed Seamless Steel Tube Round Square Rectangle
Hot Formed Steel Pipe Q345 Round Square Rectangle Seamless Steel Tube
Material: Q345 A/B/C/D/E
Technology: Seamless hot formed
Size Range: O.D.: 5 - 420 mm W.T.: 0.5 - 50 mm Length: Max 12000 mm
Q345 is a low-alloy steel, widely used in bridges, vehicles, ships, buildings, pressure vessels, special equipment, etc. "Q" means yield strength, and 345 means that the yield strength of this steel is 345MPa.
Steel Grade and Chemical Compositon,%
| Steel Grade | C | Si | Mn | P | S | Al | Nb | V | Ti | Cr | Ni | Mo |
| Q345A | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | - | ≤0.07 | ≤0.15 | ≤0.20 | ≤0.30 | ≤0.012 | ≤0.10 |
| Q345B | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | - | ||||||
| Q345C | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.030 | ≥0.015 | ||||||
| Q345D | ≤0.18 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.025 | ≥0.015 | ||||||
| Q345E | ≤0.18 | ≤0.50 | ≤1.70 | ≤0.025 | ≤0.020 | ≥0.015 |
| Steel Grade | Yield Strength | Tensile Strength | Elongation |
| Q345A | ≥345MPa | 490-675MPa | ≥21% |
| Q345B | ≥345MPa | 490-675MPa | ≥21% |
| Q345C | ≥345MPa | 490-675MPa | ≥22% |
| Q345D | ≥345MPa | 490-675MPa | ≥22% |
| Q345E | ≥345MPa | 490-675MPa | ≥22% |
Q: Are you trading company or manufacturer?
A: We are a professional steel pipes materials manufacturer.
Q: How long is your delivery time?
A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.
Q: Do you provide free samples?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.