Q390 High Tensile Carbon Rectangular Steel Tube Pipe For Structural
Q390 High Tensile Carbon Rectangular Steel Tube/Pipe For Structure Use
Simple Details
Q390 is a low alloy high strength structural steel with good comprehensive mechanical properties, weldability, cold, hot working and corrosion resistance. C, D, E grade steel has good low temperature toughness. Used in ships, boilers, pressure vessels, oil storage tanks, Bridges, power plant equipment, lifting and transporting machinery and other high load welding structural parts.
| Product name | Carbon square tube steel | |||
| Outer diameter | 10*10-100*100 mm (Square); | |||
| 10x20--50x100mm (Rectangular) | ||||
| Φ6-Φ114mm(round) | ||||
| Thickness | 0.6mm to 2.5mm | |||
| Length | 1m to 12m or as per your request | |||
| Tolerance | Wall thickness tolerance:+/-0.02mm,Outer diameter tolerance:+/-0.2mm,Length tolerance:-0/+20mm | |||
| Standard | GB/T 3091; GB/T3094;GB/T6728; EN10219; ASTMA500; JISG3446,etc | |||
| Grade | Q195,Q195B,Q235B,Q345B,ASTM A500 A/B;EN10219 S235 S275; JIS G3466 STKR400 | |||
| Application | construction building, furniture ,machinery making, container, hall structure, sun seeker, offshore oil field, sea trestle, | |||
| motorcar cassis, airport structure, shipbuilding, automobile axle pipe and so on. | ||||
| Packing | (1) nude packing | |||
| (2) Plastic cloth or water proof package | ||||
| (3) according to the clients requirements | ||||
| (4) 27 tons/container for pipe with usual outer diameter. | ||||
| For 20" container the max length is 5.85m; | ||||
| For 40" container the max length is 11.85m. | ||||
| Delivery Time | Around 20days after receiving the deposit | |||
| Payment terms | 1)payment term:T/T or L/C,etc . | |||
| 2)trade terms:FOB/CFR/CIF | ||||
| 3)minimum quantity of order:5 MT | ||||
Chemical Composition
| Grade | C | Mn | Si | P | S | V | Nb | Ti | Al | Cr | Ni |
| A | ≤0.20 | 1.00～1.60 | ≤0.55 | ≤0.045 | ≤0.045 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | - | ≤0.30 | ≤0.70 |
| B | ≤0.20 | 1.00～1.60 | ≤0.55 | ≤0.040 | ≤0.040 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | - | ≤0.30 | ≤0.70 |
| C | ≤0.20 | 1.00～1.60 | ≤0.55 | ≤0.035 | ≤0.035 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | ≥0.015 | ≤0.30 | ≤0.70 |
| D | ≤0.20 | 1.00～1.60 | ≤0.55 | ≤0.030 | ≤0.030 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | ≥0.015 | ≤0.30 | ≤0.70 |
| E | ≤0.20 | 1.00～1.60 | ≤0.55 | ≤0.025 | ≤0.025 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | ≥0.015 | ≤0.30 | ≤0.70 |
Product Show
Package & Delivery
Certification
FAQ
Q: Do you provide samples ?How can I get a sample to check your quality? Is it free or extra ?
A: Free samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.
Q: How is the quality of your products?
A: Our products are manufactured strictly according to national and international standard, and we take a test before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Q: Are you factory or trader?
A: Our company has been manufacturing and selling steel products for many years since 2009. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.