EN39 Galvanized Steel Pipe: The Ultimate Guide

Introduction

EN39 galvanized steel pipes are widely used in various industries and construction projects due to their excellent corrosion resistance, durability, and versatility. In this comprehensive guide, we will explore the key features, applications, and specifications of EN39 galvanized steel pipes. We will also delve into the manufacturing process, surface treatment, and various aspects related to these pipes. So, let’s dive in!

What is EN39 Galvanized Steel Pipe?

EN39 galvanized steel pipe is a type of steel pipe that has undergone a galvanization process to enhance its corrosion resistance. Galvanization involves coating the steel pipe with a layer of zinc, which acts as a protective barrier against rust and other forms of corrosion. This process significantly extends the lifespan of the pipe and ensures its durability in various environments.

Manufacturing Process

The manufacturing process of EN39 galvanized steel pipes involves several steps:

1. Steel Preparation: High-quality steel is selected for the production of EN39 galvanized steel pipes. The steel is carefully inspected and tested to ensure it meets the required standards and specifications.
2. Tube Formation: The selected steel is then formed into tubes through a process called tube rolling. This process involves passing the steel through a series of rollers to shape it into the desired tube shape and size.
3. Welding: The formed tubes are welded together using high-frequency induction welding or submerged arc welding. These welding techniques ensure strong and reliable joints between the tubes.
4. Galvanization: After the welding process, the tubes are thoroughly cleaned to remove any impurities or contaminants. They are then immersed in a bath of molten zinc, where a metallurgical reaction occurs, bonding the zinc to the surface of the steel. This creates a protective layer that prevents corrosion.
5. Inspection and Testing: The galvanized steel pipes undergo rigorous inspection and testing to ensure they meet the required specifications and quality standards. This includes dimensional checks, visual inspections, and various mechanical and chemical tests.
6. Surface Treatment: The galvanized steel pipes may undergo additional surface treatments, such as painting or powder coating, to enhance their appearance and provide additional protection against external elements.

Key Features of EN39 Galvanized Steel Pipe

EN39 galvanized steel pipes offer several key features that make them highly desirable for various applications:

1. Corrosion Resistance: The zinc coating on the surface of the pipe provides excellent corrosion resistance, protecting the underlying steel from rust and other forms of corrosion. This makes EN39 galvanized steel pipes suitable for both indoor and outdoor applications.
2. Durability: The combination of high-quality steel and the protective zinc coating ensures the durability and longevity of EN39 galvanized steel pipes. They can withstand harsh environmental conditions, heavy loads, and other stresses without compromising their structural integrity.
3. Versatility: EN39 galvanized steel pipes are highly versatile and can be used in a wide range of applications. They are commonly used in construction, infrastructure projects, water supply systems, scaffolding, and many other industries.
4. Easy Installation: The standardized dimensions and precise manufacturing of EN39 galvanized steel pipes make them easy to install and connect. They can be easily cut, threaded, and joined using various fittings and connectors.
5. Cost-Effective: EN39 galvanized steel pipes offer excellent value for money. Their long lifespan, low maintenance requirements, and resistance to corrosion make them a cost-effective choice for various projects.

Applications of EN39 Galvanized Steel Pipe

EN39 galvanized steel pipes find extensive applications in various industries and construction projects. Some common applications include:

1. Scaffolding: EN39 galvanized steel pipes are widely used in the construction industry for scaffolding systems. Their high strength, durability, and corrosion resistance make them ideal for supporting workers and materials at elevated heights.
2. Water Supply Systems: These pipes are commonly used in water supply systems, including plumbing, irrigation, and water distribution networks. Their corrosion resistance and smooth interior surface ensure the safe and efficient transport of water.
3. Structural Projects: EN39 galvanized steel pipes are used in various structural projects, such as building frameworks, bridges, and support structures. Their high load-bearing capacity and durability make them suitable for withstanding heavy loads and providing structural stability.
4. Fencing and Guardrails: The corrosion resistance and strength of EN39 galvanized steel pipes make them a popular choice for fencing and guardrail systems. They can withstand outdoor elements and provide a secure barrier for residential, commercial, and industrial properties.
5. Signage and Lighting Poles: EN39 galvanized steel pipes are commonly used for signage and lighting poles. Their durability, corrosion resistance, and ease of installation make them an excellent choice for supporting outdoor signage and lighting fixtures.

Specifications of EN39 Galvanized Steel Pipe

EN39 galvanized steel pipes are manufactured according to specific standards and specifications. The key specifications include:

1.FAQ

1. What are the advantages of using EN39 galvanized steel pipes?
   EN39 galvanized steel pipes offer several advantages, including excellent corrosion resistance, durability, versatility, easy installation, and cost-effectiveness. They are suitable for various applications in construction, infrastructure, water supply systems, and more.
2. Can EN39 galvanized steel pipes be used for outdoor applications?
   Yes, EN39 galvanized steel pipes are specifically designed to withstand outdoor environments. The zinc coating on the surface provides excellent protection against corrosion, making them ideal for outdoor applications such as scaffolding, fencing, and guardrails.
3. Are EN39 galvanized steel pipes suitable for water supply systems?
   Yes, EN39 galvanized steel pipes are commonly used in water supply systems. Their corrosion resistance and smooth interior surface ensure the safe and efficient transport of water. However, it is important to ensure that the pipes meet the required standards and regulations for water supply applications.
4. Can EN39 galvanized steel pipes be painted or powder coated?
   Yes, EN39 galvanized steel pipes can undergo additional surface treatments such as painting or powder coating. This not only enhances their appearance but also provides additional protection against external elements. It is important to use suitable paints or coatings that are compatible with galvanized surfaces.
5. Where can I buy EN39 galvanized steel pipes?
   EN39 galvanized steel pipes can be purchased from various suppliers, manufacturers, and distributors. It is recommended to source them from reputable and certified suppliers to ensure the quality and compliance with the required standards.

Chemical Composition and Mechanical Properties of EN39 Scaffolding Pipe

 

EN39 scaffolding pipes are widely used in urban construction, scaffolding systems, and as building material tubes. They are known for their high strength, durability, and corrosion resistance. In this section, we will discuss the chemical composition and mechanical properties of EN39 scaffolding pipes.

Chemical Composition:

The chemical composition of EN39 scaffolding pipes is as follows:

• Steel Grade: S235GT
• Steel Number: 1.0106

The chemical composition is given in the table below:

Element	Maximum % (by mass)
Carbon (C)	≤0.2
Silicon (Si)	–
Manganese (Mn)	≤1.4
Phosphorus (P)	≤0.040
Sulfur (S)	≤0.045
Aluminum (Al)	≤0.020

Mechanical Properties:

The mechanical properties of EN39 scaffolding pipes are as follows:

• Yield Strength (ReH): Minimum 235 MPa
• Tensile Strength (Rm): 340-520 MPa
• Elongation (A): Minimum 24%

It is important to note that the mechanical properties may vary slightly depending on the specific manufacturing process and the quality of the steel used.

Certification and Inspection:

EN39 scaffolding pipes are certified according to ISO9001 standards, ensuring their quality and compliance with international regulations. They undergo thorough inspection, including chemical composition and mechanical properties testing, dimensional and visual inspection, and nondestructive inspection.

Surface and Coating:

EN39 scaffolding pipes are available in two surface finishes: hot-dipped galvanized and black. The hot-dipped galvanized surface provides excellent corrosion resistance, making it suitable for outdoor applications where the pipes are exposed to moisture and other corrosive elements. The zinc coating on the galvanized pipes ranges from 200-600g/m2, further enhancing their durability and longevity.

Size and Packaging:

EN39 scaffolding pipes are available in two sizes:

• Diameter: 48.3mm
• Wall Thickness (W.T):
  • 3.2mm
  • 4.0mm

The standard length of the pipes is 6 meters or 6.4 meters. The pipes are packed in bundles or bundled and wrapped with PVC for added protection during transportation and storage.

Trade Terms and Delivery:

EN39 scaffolding pipes are traded under various terms, including FOB, CFR, CIF, EXW, etc. The accepted payment methods are L/C, T/T, and Western Union. The delivery time for EN39 scaffolding pipes is usually within 10-30 days after the receipt of the deposit. The loading port for these pipes is Xingang in Tianjin.

In conclusion, EN39 scaffolding pipes offer excellent strength, durability, and corrosion resistance for various construction and scaffolding applications. Their chemical composition and mechanical properties meet the required standards, and they undergo rigorous inspection to ensure quality. The availability of different sizes, surface finishes, and packaging options makes them a versatile choice for construction projects.