Q345q Q370q D/E Q420q D/E Structural Steel For Bridges

StandardsISO, ASTM/ASME/AISI, EN, GB/T, DIN, JIS, BS, etc.Thickness6-100 mm, or customized
GradesQ345qD/E/FWidth900-4800 mm, or customized
MaterialHigh-Strength Low-Alloy Steel (HSLA)Length3000-25000 mm, or customized
OriginHebei,ChinaShapePlate, Profile (I-beam, H-beam, Angle, Channel) or as request
Technique

Cold Rollled

Delivery Time15-21 days


Product descriptions

Q345q series steel is low-alloy, high-strength structural steel primarily composed of carbon, manganese, and silicon. It offers excellent toughness, weldability, and high tensile strength while also performing well in low temperatures and resisting atmospheric corrosion.

Naming Rules: 

Q: Yield strength.

345: Minimum yield strength of 345 MPa.

q: Suitable for bridge structure.

C/D/E/F: Quality grades. Toughness at 0℃/-20℃/-40℃/-60℃. (e.g. Q345qD)

NH: Weather-resistant, designed to withstand atmospheric corrosion. (e.g. Q345qDNH)

Z-: Z-direction performance grade, such as Z15, Z25. (e.g. Q345qDNHZ15)

It is commonly used in bridge construction, large infrastructure, and structural supports, where its durability and load-bearing capacity are essential for stability in challenging environments.

Characteristics of Q345q Series Steel

High strength, making it suitable for heavy structures.

Reliable performance under stress, reducing the risk of failure.

Good weldability, allowing easy fabrication and assembly.

Excellent toughness, ensuring durability in low temperatures.

Corrosion resistance, extending the lifespan of structures.

FAQ

Q: Are you trading company or manufacturer ?

A: We have 20+ years of professional steel trading experience and can provide a wide range of steel products.

Q: Will you delivery the goods on time?

A: Yes, we promise to provide the best quality products and deliver on time. Honesty is our company's tenet.

Q: Do you provide samples ?  is it free or extra ?

A: The sample will be offered for free if you need, but the freight will be covered by our customer. If we have cooperation, the freight will be covered by our company.

Q: Do you accept the third party inspection?

A: Yes absolutely we accept.

Q: How could you guarantee your products?

A: Each piece of product is manufactured by certified workshops and inspected by Baidy Steel piece by piece according to national QA/QC standards. We can also issue a quality warranty to customers.

Q: How can I get your quotation as soon as possible?

A: The email will be checked within 24 hours,meanwhile,the Wechat and WhatsApp will be online in 24 hours. Please send us your requirement , we will work out a best price soon.


Xingtai Baidy Steel Works Co.,Ltd

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