Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects
Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects
Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects
Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects
Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects
Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects

Item specifics

0.5- 60 mm
OD(Outer diameter)
CE,LEED,BV,PHD&EPD,BC1,EN 10210,EN10219,ISO9000
Surface Treatment
Black painted or REQUEST
as required
0.5-24M according to client requirement
Hollow section: ASTM A500/A501,EN10219,EN10210
Delivery Time
7-30 Days



Versatile EN10219 S355NH Square Steel Tube: Ideal for Construction Projects
1. Introduction
Steel square tubes are versatile structural components widely used in various industries. They offer durability, strength, and stability, making them crucial for applications requiring structural support. In this article, we will explore the different aspects of steel square tubes, including their types, sizes, prices, and the significance of choosing the right supplier and manufacturer.
What is a Steel Square Tube?
Steel square tubes, also known as square steel pipes, are hollow, four-sided structures made of steel. They are known for their impressive strength-to-weight ratio and versatility. These tubes are manufactured through a process that involves shaping steel into a square cross-section and welding the edges to form a continuous piece.

Steel square tubes are commonly used as load-bearing columns, structural supports, frames, and in various other applications that require stability and strength. Their square shape allows for efficient use of space and easy installation.

Applications of Steel Square Tubes
Steel square tubes find applications in diverse industries such as construction, automotive, furniture, and more. In the construction sector, they are extensively used for building frameworks, support columns, and roof trusses. The automotive industry utilizes steel square tubes in the fabrication of vehicle frames, roll cages, and suspension components. Additionally, they are commonly used in the manufacturing of furniture, storage racks, and agricultural machinery.
Types of Steel Square Tubes
There are various types of steel square tubes available in the market, each with its own set of features and specifications. One notable type is the EN10219 S355NH Square Steel Tube. This particular square steel tube has excellent mechanical properties and is known for its high strength and corrosion resistance. It is widely used in structural and construction projects that demand superior durability.
2.EN10219 S355NH chemical composition
Carbon ≤ 0.20%, silicon ≤ 0.50%, manganese ≤ 0.9-1.65%, phosphorus ≤ 0.035%, sulfur ≤ 0.030%, niobium ≤ 0.05%, vanadium ≤ 0.12%,
Aluminum ≥ 0.020%, titanium ≤ 0.03%, chromium ≤ 0.30%, nickel ≤ 0.5%, molybdenum ≤ 0.10%, copper ≤ 0.35%, nitrogen ≤ 0.015%
3.EN10219 S355NH mechanical properties
Wall thickness ≤ 16mm: yield strength ≥ 355MPa, tensile strength ≥ 470-630MPa, elongation ≥ 22%
16mm < wall thickness ≤ 40mm: yield strength ≥ 345MPa, tensile strength ≥ 470-630MPa, elongation ≥ 22%
4.Benefits of EN10219 S355NH Square Steel Tube
EN10219 S355NH Square Steel Tube offers several advantages. Its high yield strength and impact resistance make it ideal for heavy-duty applications. The corrosion-resistant properties ensure longevity and reduce maintenance costs. Additionally, the square shape provides greater stability and load-bearing capacity compared to other tube shapes.

Choosing a Square Steel Pipe Supplier When selecting a square steel pipe supplier, it is essential to consider factors beyond pricing. Quality should be a priority, ensuring that the supplier meets industry standards and certifications. Excellent customer service is crucial as it ensures efficient communication, prompt deliveries, and assistance throughout the purchase process. Other factors to consider include the supplier's experience, reputation, and the availability of customized options.

Rectangular Steel Pipe Factory The choice of a rectangular steel pipe factory plays a vital role in obtaining high-quality products. Factors such as manufacturing capabilities, quality control processes, and adherence to industry standards should be carefully evaluated. A reputable factory will have advanced machinery, skilled personnel, and rigorous quality checks in place, ensuring the production of reliable rectangular steel pipes that meet customer requirements.

Steel Square Tubes Sizes Steel square tubes are available in a range of sizes to accommodate different applications. Common sizes include 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", and larger. The dimensions of steel square tubes are typically specified by their outside diameter and wall thickness. A size chart can assist in selecting the appropriate dimensions for specific projects.

Steel Square Tubes Price The pricing of steel square tubes can vary based on several factors. Market trends, fluctuations in material costs, and the supplier's pricing strategy all contribute to the final price. Additionally, quantity discounts are often provided for bulk orders. It is advisable to obtain quotes from multiple suppliers to compare prices and ensure competitive offers.
Choosing a Square Steel Pipe Supplier
1、 Choose a legitimate manufacturer
When purchasing square steel pipes, the first step is to choose a reputable manufacturer to ensure the reliable quality of the purchased square steel pipes. Regular manufacturers generally have the following characteristics: firstly, they have a large-scale production base and modern production equipment, with efficient production capacity and stable supply capacity; Secondly, there is a comprehensive product quality management system that has passed the ISO9001 quality management system certification and can provide relevant quality certification; The third is to have rich production experience and technical strength, and be able to provide diversified products and solutions according to customer needs.
2、 Emphasize product quality

In the procurement process of square steel pipes, product quality is our primary concern. We should request the manufacturer to provide relevant product test reports and quality certificates to ensure that the purchased square steel pipes comply with relevant national standards and technical requirements. At the same time, we can also comprehensively understand the strength of the manufacturer through on-site inspections of their production lines, inspection equipment, and product quality management processes, ensuring the reliable quality of the purchased square steel pipes.
3、 Considering price factors comprehensively
In the procurement process of square steel pipes, price is another important factor to consider. Although we strive for quality, we cannot ignore the impact of price. When selecting suppliers, we need to compare multiple aspects to understand the market situation and supplier quotations, so as to have a clear understanding. At the same time, we also need to be careful not to only focus on price and ignore product quality, and should use cost-effectiveness as the main measurement standard.
Steel square tubes are essential components in a wide range of industries due to their strength, stability, and versatility. Whether it's for construction, automotive, or furniture applications, their durability and load-bearing capacity make them indispensable. Selecting a reliable and reputable supplier and manufacturer is crucial to ensure the procurement of high-quality products that meet specific project requirements.
Can steel square tubes be used for structural purposes?
 Yes, steel square tubes are commonly used for structural purposes due to their strength and load-bearing capacity. They provide excellent support and stability in various applications.
What is the difference between square steel tubes and rectangular steel pipes? 
Square steel tubes have a square cross-section, while rectangular steel pipes have a rectangular cross-section. The choice between the two depends on the specific application and the desired shape of the structure.
How are the dimensions of steel square tubes specified? 
The dimensions of steel square tubes are typically specified by their outside diameter and wall thickness. For example, a common size might be 1" x 1" with a 0.065" wall thickness.
Can steel square tubes be welded? 
Yes, steel square tubes can be welded using appropriate welding techniques. This allows for the creation of longer sections or the joining of square tubes to other steel components.
Are there any environmental advantages of using steel square tubes?
Steel is a recyclable material, and using steel square tubes contributes to sustainable practices. Additionally, the longevity and durability of steel reduce the need for frequent replacements, further reducing environmental impact.