Carbon Steel Square Steel Pipe for Construction & Mechanical Use

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Product Description

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Basic Information
Model NO.
Square Steel Pipe
Material
Carbon Steel
Technique
ERW
Thickness
0.8mm-30mm
Specification
15-1000mm
Section Shape
Square
Surface Treatment
Shot/Sand Blasting, Pickling
Usage
Construction & Mechanical Manufacture
Delivery Time
5 to 25 Days
Production Capacity
400,000 Ton/Year
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Product Introduction
Carbon Steel Square Pipe

Our Carbon Steel Square Pipe is a high-quality non-alloy structural material engineered for versatile industrial and construction applications. With an annual production capacity of 400,000 tons, we ensure stable and large-scale supply to meet bulk order demands, with a flexible delivery time of 5 to 25 days tailored to your project schedule.

Square Steel Pipe Sample 1
Square Steel Pipe Sample 2

This square steel pipe features a precise section shape with standard tolerance and customizable specifications: the side size ranges from 15mm to 1000mm, and the wall thickness is available from 0.8mm to 30mm. Crafted from premium carbon steel, it supports a full range of steel grades including Gr.A/B/C/D, S195jr, S235jr, S275jr, S355jr, S355j0, S355j2, S460jr and S600jr.

We offer professional one-stop processing services including cutting, welding, bending and painting, with multiple surface treatment solutions—shot/sand blasting, pickling and anti-rust oil treatment—to enhance corrosion resistance and service life.

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Company Profile
Factory Overview

Our company is located in a specialized steel trade zone with convenient transportation. Through years of relentless efforts, we have developed into a large-sized enterprise integrating steel trading, galvanizing processing, and logistics distribution. 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.

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With 30 years of development, we have grown into a leading steel trading enterprise widely recognized by customers. In 2024, our company achieved a major breakthrough in total sales volume, exceeding 380,000 tons. Guided by core values of Professionalism, Integrity, and Trustworthiness, we have earned consistent recognition from global agents and end customers.

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Corporate Advantage & Certificates
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Frequently Asked Questions
What are the applications of your steel pipes?
Our pipes are widely used in curtain walls, power transmission towers, communication grids, building construction, and mechanical manufacturing due to their excellent structural reliability.
How is the quality of galvanized pipes ensured?
Quality is judged by surface inspection for defects like missing plating or bubbles. Products must meet strict appearance criteria to ensure reliable performance in real-world applications.
Why might galvanized steel rust in certain environments?
Rusting occurs if the zinc coating is compromised by acids, alkalis, or hydrogen sulfide. We provide phosphating treatments to create a thicker protective layer that inhibits oxidation.
How do you prevent cracking during low-temperature welding?
We use low-hydrogen materials, preheat the steel (80-200℃), adopt symmetric welding, and ensure slow cooling for at least 2 hours post-welding to relieve stress.
What is your production capacity and delivery timeline?
We have an annual capacity of 400,000 tons. Standard delivery time ranges from 5 to 25 days depending on the order specifications and project requirements.
Can the pipe length and specifications be customized?
Yes, we offer side sizes from 15mm to 1000mm and wall thicknesses from 0.8mm to 30mm with fully customizable lengths to fit your specific design needs.

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