Rectangular Q390A Carbon Steel Square Tube
Rectangular Q390A Carbon Steel Square Tube (Q390A rectangular carbon steel square tube) related information is as follows:
Q390A is a low alloy high strength structural steel with excellent comprehensive mechanical properties.
Its grade consists of the Chinese phonetic letter of the yield point (Q), the yield point value (390), and the quality grade symbol (A).
The main chemical components include carbon (C), manganese (Mn), silicon (Si), phosphorus (P), sulfur (S), etc., as well as a small amount of alloying elements such as vanadium (V), niobium (Nb), titanium (Ti), chromium (Cr), nickel (Ni), etc. The alloying element content meets the requirements of GB/T3304 for low alloy steel, and a small amount of molybdenum (Mo) can also be added to improve the wear resistance of the steel.
Q390A steel plate has high yield strength and comprehensive mechanical properties, and is suitable for the manufacture of medium and high pressure boiler drums, high and medium pressure petrochemical containers, pipelines, bridges and other welded structures with high loads.
Q390A steel plate implements GB/T 1591-2008 standard.
Due to its high strength and excellent mechanical properties, Q390A rectangular carbon steel square tube is widely used in heavy machinery manufacturing, bridge construction, petrochemical and other fields.
Q390A steel plate is used in hot rolling or normalizing state, and its welding performance and mechanical properties are very important. Preheating should be carried out before welding, and the preheating temperature should be controlled at 150~230°C.
| After-sales Service: | Provide |
|---|---|
| Warranty: | Provide |
| Standard: | AISI, JIS, ASTM, DIN, BS, GB |
| Certification: | ABS, RoHS |
| Technique: | Hot Rolled |
FAQ
Q: Are you trading company or manufacturer ?
A: We are Manufacturing and processing enterprises.
Q: How long is your delivery time?
A: Generally it is 3-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=10000USD, 100% in advance. Payment>=10000USD, 30% T/T in advance ,balance before shippment.
Or 100% L/C
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