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Will galvanized pipe rust? The answer is yes, but very slowly. It will rust over time, especially in underground pipes. But galvanized steel pipe is highly resistant to corrosion due to the zinc coating. So it won’t rust easily.Wanzhi Steel is committed to providing you with galvanized pipes with strong rust resistance. Also, our products can be made into different sizes and shapes according to your needs. Welcome to contact us for more details.

Galvanized Round Steel Pipe

Galvanized Pipe

Galvanized Rectangular Steel Pipe

GI Rectangular Pipe

Galvanized Square Steel Tube

Galvanized Square Tube

Why Galvanized Pipes Do Not Rust Easily?

Galvanized pipes are processed to produce a relatively thick, dense galvanized layer on the surface of the steel. This galvanized layer adheres to the surface of the steel, and it effectively protects the steel body from other acidic and alkaline corrosive solutions. Therefore galvanized pipes do not rust as easily as ordinary steel pipes. If your project requires high corrosion resistance, it will be the best choice.

Factors Affecting the Rusting of Galvanized Pipes

1. Environment

In industrial environments and urban areas, galvanized pipes will rust at a faster rate. In suburban or rural areas, where there is less pollution, it will rust more slowly and will last longer.

2. Temperature

The temperature of the environment will also affect the corrosion rate of galvanized pipes. If the temperature is high, the rate of corrosion will also be accelerated, while the low temperature will slow down the corrosion rate.

3. Soil

The acidity of the soil affects the rate at which galvanized pipe corrodes and rusts. Galvanized pipe can last 30 to 50 years in the harshest soils and 50 years or more in less corrosive soils.

Small Size Galvanized Tube

Small Size GI Tube

Galvanized Square Tube Size

GI Square Tube Size

Galvanized Pipes for Sale

Galvanized Pipes for Sale

How to Clean Galvanized Pipes?

Will galvanized pipe rust? How long it will take? If the galvanized pipe is rusty, how do you go about cleaning it? Wanzhi Steel, as an experienced galvanized pipe manufacturer, offers you some practical advice.

1. General Cleaning

Although galvanized pipe is not as easy to clean as stainless steel pipe, it is not as much of a hassle as you might think. If you want to remove impurities from the outside of galvanized pipe, you can apply solvent to its surface and then use a wire brush to remove rust and clean up loose or slanted rust and weld slag.

2. Professional Cleaning

If galvanized pipe is used for pipelines that carry fluids, such as, galvanized water pipes. When it rusts over a large area, we recommend that you better find a professional to clean it to prevent damage to the pipe itself.

Aging Galvanized Pipes

Aging Galvanized Pipes

Corroded and Rusted GI pipe

Rusty Galvanized Pipe

Cleaning Rusted Galvanized Pipe Method

GI Pipe Cleaning Method

Where to Buy Rust-resistant Galvanized Pipes From?

Wanzhi Steel is a comprehensive company integrating purchasing, production, storage, sales and export. We can provide you with galvanized pipes, galvanized square pipes and galvanized rectangular pipes that are not easy to rust. Let’s review what advantages Wanzhi Steel has.

1. Wanzhi Steel has its large modern factory with sufficient stock to meet your large order requirements.

2. We have more than 17 years of industry experience and have more than 12 years of export experience. We are qualified to provide professional advice for your project. Feel free to contact us for more details.

3. We have global cooperation with more than 80 countries and regions, including Chile, Singapore, Turkey, etc. We have rich experience in cooperation and will know more about your needs.

4. At Wanzhi Steel, we will provide you with perfect pre-sales and after-sales services. Besides, we have a multi-lingual team to communicate with you without any obstacles. We are at your service 24/7, so please feel free to contact us.

GI Pipe Manufacturer in China

GI Pipe Manufacturer

Rust-proof Galvanized Pipes for Sale

Galvanized Tubes in Stock

Wanzhi Steel Factory in China

Wanzhi Factory


Galvanized pipe is one of the hot products of Wanzhi Steel. It is widely used in construction, machinery and chemical industry because of its corrosion resistance and long service life. Our company has a complete range of steel products, including stainless steel pipes, seamless pipes, carbon pipes and so on. We can meet your different needs. If you are looking for galvanized pipes with good quality and affordable price, welcome to contact us.

  • 17 years+

    Metal material industry exprience

  • 12 years+

    Import and export experience

  • 120 +

    Countries / regions have global cooperation

  • 1000 +

    Annual export volume

What is galvanized steel pipe? Galvanized steel pipe is made of low carbon steel. Then it is covered with zinc coating through hot-dip or electro-galvanizing process to prevent rusting. Galvanized steel tubes feature with excellent corrosion resistance and durability. Therefore, it is very versatile in construction, chemical, electric power, machinery and other industries. As a leading galvanized pipe manufacturer, Wanzhi Steel will share more information about galvanised iron pipe, including its definition, uses, manufacturing process, etc. Keep reading for more details.

Galvanized Round Steel Pipe

Galvanized Round Steel Pipe

Galvanized Square Tube

GI Square Tube

Galvanized Steel Tubes

Galvanized Steel Tubes

Production Process of Galvanized Pipe

Steel Pipe (Black Pipe) → Alkaline Washing → Water Washing → Pickling → Drying → Hot-dip Galvanizing → Cooling → Passivation → Pipe Cutting → Rinsing → Product Inspection

GI Steel Pipe Manufacturing Process

GI Steel Pipe Manufacturing Process

Galvanized Steel Tube Uses

Galvanized pipe is very popular among different industry because of its great anti-corrosion properties. Here let’s review its uses.

1. Conveying pipeline for gas, heating gas, oil, water or other liquid or gas transportation;
2. Oil industry, such as oil well pipes and oil pipelines for offshore oil fields;
3. Uses in agriculture, construction, aviation and other industries.

Transmission Pipeline

Transmission Pipeline

Oil Pipelines

Galvanized Tube Uses

Agricultural Greenhouse

Agricultural Greenhouse

Distinguish Between Electro Galvanizing & Hot Dipped Galvanizing

There are two types of galvanized steel pipes, namely, electro galvanizing and hot-dip galvanizing. And they differ greatly in terms of production process, appearance, zinc layer thickness and applications.

1. Difference in Process

Hot-dip galvanizing is a chemical process. The black pipe as raw material is dipped into the dissolved zinc solution for a certain amount of time. Cold galvanizing, also called electro galvanizing, is a physical process. It is just a layer of zinc brushed on the surface, so the zinc layer is easy to fall off. Hot-dip galvanizing is mostly used in building construction.

2. Difference in Appearance

The surface of electro galvanizing is brighter than hot-dip galvanizing. Electro galvanized appearance using color passivation process, and it is smooth, no zinc tumor produced. Hot-dip galvanized pipe color is silvery-white, the appearance of the process is easy to produce water lines.

3. Different Thickness

The zinc layer of hot-dip galvanizing itself is relatively thick, generally more than 10μm thick, so it has good anti-corrosion ability. Its surface is bright, but slightly rough, there may also be zinc flowers. The zinc layer of electro galvanizing is very thin, about 3-5μm thickness. Its surface is smooth, but there will be gray, and corrosion resistance is not enough.

Hot-dip Galvanized Pipe Manufacturer

Hot-dip Galvanized Steel Pipe

Electro-galvanized Pipe

Electro-galvanized Steel Pipe

What is Galvanized Steel Pipe

Galvanised Tubes

What Does Galvanized Pipe Look Like?

We can see various kinds of steel pipe products in our life, such as stainless steel pipe, carbon steel pipe and so on. So how to identify whether it is a galvanized pipe or not? Galvanized pipe has a similar appearance to nickel. Whether the pipe is hot-dip galvanizing or electro galvanizing, the surface is smooth overall. As time goes by, galvanized pipe becomes darker and brighter, depending on the environment in which it is used.

Is It Safe to Used for Transporting Drinking Water?

Galvanized steel pipes can be used as pipes for transporting drinking water. But there is one problem to be aware of. As galvanized pipes age, the zinc layer is eroded and a large amount of rust scale is produced inside the pipe. The rust scale leads to high levels of heavy metals in the water. As a result it has some potential health problems. This is why people prefer stainless steel pipes for drinking water pipes. But if you are using a public water supply system, the system treats the water in such a way that it basically does not cause any harm to human health.

Wanzhi Steel Pipe Stock

Galvanized Pipes for Sale

Large Quantity of High Quality GI Steel Pipes

Galvanized Steel Tube Inventory

Wanzhi Steel offers GI Pipes in Stock

Wanzhi Steel Galvanized Pipes


Wanzhi Steel as a leading steel pipe manufacturer, we have 17 years experience in the industry and 12 years experience in steel export. Whether you need galvanized steel pipe or other products, we can meet your needs. In addition, to serve you better, we have set up a team including Chinese, English, Italian and other languages. If you are planning to buy galvanized pipe, please contact us to get the latest price.

Seamless pipe and welded pipe are two different kinds of steel pipes. However, they both play a good role in their respective fields and are welcomed by many customers. Wanzhi Steel can provide you with seamless and welded pipes of different diameters, wall thicknesses, and sizes. If you need both products for your project. Please take a few minutes and let us take you through what the difference is between them.

Seamless Pipe

Seamless Pipe

Welded Pipe

Welded Pipe

Seamless & Welded Pipe

Seamless & Welded Pipe

1. Processing Technologies

Seamless tube is made of high-quality carbon steel or alloy steel. Its processing can be divided into two main methods: cold-drawn and hot-rolled. And welded pipe is a steel pipe made of steel plate or strip steel that has been rolled and formed and then welded. It includes longitudinal welded pipe, spiral welded pipe, electric arc welded pipe, and resistance welded pipe.

Seamless and Welded Pipe Manufacturing Process

Seamless and Welded Pipe Manufacturing Process

2. Applications

Welded pipes are widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. Seamless pipes are mainly used as petroleum geological drilling pipes, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.

Welded Pipe for Conveying

Welded Pipe for Conveying

Welded Pipe for Construction

Welded Tube for Construction

Uses of Seamless Pipe

Uses of Seamless Pipe

3. Strength

The strength of welded pipe is generally lower than that of seamless pipe. The seamless pipe can withstand greater pressures and loads than welded pipe because it has no weak seams.

4. Wall Thickness

Welded steel tube has a uniform wall thickness, can be made to any size, and can be made into the thin-walled pipe. Seamless pipes have uneven wall thickness and are heavier overall.

5. Prices

The production process, raw materials, strength, and durability are all factors that determine their cost. Seamless pipe is stronger than welded pipe, and it costs more to produce, so it is more expensive. Wanzhi Steel offers you factory sales prices to make your project more economical and cost-effective. Feel free to contact us for a free quote.

Seamless Pipes in Stock

Seamless Pipes in Stock

Welded Pipes for Sale

Welded Pipes for Sale

Steel Tube Manufacturer

Steel Tube Manufacturer

6. Appearance

Welded tubes are made by a welding process with visible weld seams on the surface. Seamless tubes are made from whole pieces of metal and have no seams on the surface. But the welded tube has high brightness on the outside. While the seamless tube appearance brightness is low, there are black spots and pockmarks inside the tube that is not easy to remove.

How to Choose Steel Pipe, Welded or Seamless?

Wanzhi Steel can provide you with welded and seamless steel tubes with different materials, for example, seamless stainless steel pipes. If you are confused which one is your best choice, please contact Wanzhi Steel. As an experienced manufacturer and exporter of steel pipes, we are glad to give you some advice.

1. According to the use environment: If your project is to be carried out in a less corrosive environment, you can choose welded pipe. Conversely, if it is in a highly corrosive environment, seamless pipe would be your best choice.

2. According to the budget: You should choose products within the budget you have set. This will be more focused and the products selected will be more cost effective. But don’t be greedy for small bargains to avoid being cheated.

3. Consulting experts: You can seek advice from a professional. Wanzhi Steel, for example, has 17 years of industry experience in this field. We are qualified to advise you on your project to save your time and money.

Wanzhi Steel Tube in Stock

Wanzhi Steel Tube in Stock

Wanzhi Steel Tube for Sale

Steel Pipe Inventory

Wanzhi Steel Factory

Wanzhi Steel Factory


Wanzhi Steel offers a full range of welded and seamless pipes in various specifications. Whichever product you choose to purchase, we will provide you with factory sales prices. In addition, we offer discounts for bulk orders. By choosing Wanzhi Steel you also get a comprehensive pre-sales and after-sales service, as well as numerous value-added services. If you have plans to purchase welded and seamless pipes, please contact us for more details.