Q345 Welded Square Pipes

Q345 Welded Square Pipes, also known as Q345 welded square pipes, are high-strength, low-alloy structural steel pipes. The following is a detailed introduction to its characteristics:

1. Material properties

Q345 square pipes are named for their 345MPa yield strength, which makes them perform well in various engineering structures, especially in situations where they need to withstand heavy loads and complex stress environments. Q345 square pipes are low-alloy materials, corresponding to the 16Mn grade in the old national standard GB/T1591-1988, and are clearly marked as Q345 in the new national standard GB/T1591-1994. In addition, Q345 has five quality grades, from Q345A to Q345E, to meet different engineering needs.
2. Production process

The production process of Q345 square pipes mainly includes unpacking, flattening, curling, welding to form round pipes, rolling round pipes into square pipes, and finally cutting them into different lengths according to demand. This production method ensures that the cross-sectional shape of the square tube is flexible and diverse, and various square or rectangular cross-sections can be customized to meet the needs of different engineering structures.

3. Product performance

The large diameter of Q345 square tube can reach 80080010-25, which is one of the largest square tubes in the world. This feature makes it particularly suitable for large-scale engineering projects. Q345 square tube is a hollow square cross-sectional light steel tube, also known as steel cold bending profile. Its hollow cross-sectional design not only reduces weight but also maintains good strength. Q345 square tubes are mostly made of high-frequency welding technology. This welding method ensures high quality and short welds, reducing the chance of defects.
4. Application field

Q345 square tube is widely used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports and other fields due to its excellent performance. Its high strength, good welding performance and corrosion resistance make it an indispensable material in these fields..

FAQ:
Q1. How can I get a quotation from you?
A1: You can leave us message, and we will reply every message in time. Or we may talk on line by Trade manager. And you can also find our contact information on contact page.
Q2. Can I get samples before order?
A2: Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q3. What is your delivery time?
A3: The time of delivery is usually around 15-20 days. We can send out in 2 days, if it has stock.
Q4. How do you make our business long-term and good relationship?
A4: We keep good quality and competitive price to ensure our customers benefit ; We respect every customer as our friend and we sincerely do business and make friends with them,no matter where they come from.
 

Hot Tags: q345 welded square pipes, China q345 welded square pipes manufacturers, suppliers, EN 10216 ERW Steel Tube, A519 Pipe, Carbon and Alloy Steel Pipe, Electric Resistance Welded Tube, BS1387 ERW Steel Tube, ASTM A213 tubing