Our Carbon Steel Square Pipe is a premium non-alloy structural material for versatile industrial and construction uses. With a production capacity of 400,000 tons annually, we assure stable supply for bulk orders, offering flexible delivery from 5 to 25 days to suit your project schedule.
We provide professional one-stop processing services, including cutting, welding, bending, and painting, with surface treatments like shot/sand blasting, pickling, and anti-rust oil for enhanced corrosion resistance, finish, and lifespan. Ideal for building construction and mechanical manufacture, our square steel pipe offers durability and practicality for structural framing.
Boasting over 16,000 square meters of large-scale indoor warehouses, we maintain long-term and stable strategic cooperative relationships with numerous landmark domestic steel mills. Our regular inventory stands at 20,000 tons. In 2024, the company achieved a major breakthrough in total sales volume, exceeding 380,000 tons.
FREQUENTLY ASKED QUESTIONS
1. What are the applications of hot-dip galvanized steel pipes?
Hot-dip galvanized steel pipes are widely used in curtain walls, power transmission towers, communication grids, and power networks due to their excellent quality and practical convenience.
2. What are the acceptance criteria for these pipes?
Qualified products are judged by appearance inspection: the entire surface must be free of defects such as missing plating or bubbles to ensure reliable performance.
3. Why might galvanized steel rust in certain environments?
Zinc is chemically active. In humid environments or contact with hydrogen sulfide, the coating can corrode. Phosphating treatment can effectively inhibit rust by providing a thicker protective layer.
4. How to avoid cracking when welding in low temperatures?
Use low-hydrogen materials, preheat to 80-200℃, adopt symmetric welding, and ensure slow cooling for at least 2 hours post-welding.
5. What steel grades are available for square pipes?
We offer a wide range of grades including Gr.A/B/C/D, S195jr, S235jr, S275jr, S355jr, S355j0, S355j2, S460jr, and S600jr.
6. What is the production capacity and lead time?
Our annual production capacity is 400,000 tons, with a flexible delivery time ranging from 5 to 25 days depending on project requirements.
Flowtera Pipe
