Hot dip galvanized steel pipe and its applications
Hot dip galvanized steel pipe is a steel pipe that has been coated with zinc. This coating protects the steel from corrosion. In South Korea, it is most commonly used for outdoor construction like fences and handrails, or for some interior plumbing. It is also sometimes called galvanized iron pipe. Hot dip galvanized steel pipe has been used for nearly two centuries in South Korea because of its durability, malleability, relatively low cost and ease of installation. The primary use of hot dip galvanized steel pipe is to carry water to homes and commercial buildings. The zinc also prevents the buildup of mineral deposits, thereby extending the life of the piping system. Hot dip galvanized steel pipe is also used in other applications such as air ducts and ventilation systems, water wells, storm drain lines,natural gas lines and maritime structures. It is also used in oil and gas transmission lines. Hot dip galvanized steel pipe is either threaded or welded to create a secure connection. Threaded galvanized pipe is used for fire sprinkler systems because it is more fire-resistant than black steel pipe. It is also used for natural gas, oil and air lines in South Korea. Because hot dip galvanized steel pipes are so widely used in Korea, wholesale and retail hot dip galvanized steel pipes become a very promising business. If you also want to engage in this career, please contact us. We will offer you the best product and price.
Hot dip galvanized steel pipe price
The price of hot dip galvanized steel pipe varies depending on the size and thickness of the pipe. Generally, it can range from $2.00 to $15.00 per foot, depending on the size and thickness of the pipe. If you need the latest price of steel pipes, please consult our business staff. They will provide you with the latest quotation at the first time. We guarantee that the price given is the most sincere.
Production process of hot dip galvanized steel pipe
1. Pre-treatment:
The raw material used for hot-dip galvanizing steel pipe needs to be pretreated before galvanizing. The surface of the steel pipe is cleaned, pickled, and phosphated.
2. Galvanizing:
The hot-dip galvanizing process is to make the galvanizing bath heated to a certain temperature (about 455 °C), immersing the steel pipe in the galvanizing bath, and then withdrawing it from the galvanizing bath after a certain period of time (the residence time is generally about 5-20 seconds).
3. Inspecting:
After galvanizing, the surface of the steel pipe needs to be inspected. The surface of the galvanized pipe needs to be inspected for air holes, stripes, slag inclusion, and other defects.
4. Cooling:
After galvanizing, the steel pipe needs to be cooled to room temperature. The cooling time is usually about 5 minutes.
5. Passivation:
After cooling, the steel pipe needs to be passivated. Passivation helps to improve the corrosion resistance of the galvanized steel pipe.
6. Oiling:
After passivation, the galvanized steel pipe needs to be oiled. The oiling process helps to improve the corrosion resistance of the galvanized steel pipe.
7. Packaging:
The last step in the production of hot-dip galvanized steel pipe is packaging. The packaging of the steel pipe needs to be done properly in order to protect the pipe from damage during transportation.
Transportation and storage of hot dip galvanized steel pipe
The transportation of hot dip galvanized steel pipe is different from ordinary spiral steel pipes. Since the outer wall has an anti-corrosion layer, the following issues must be paid attention to during transportation.
1: When hoisting Hot dip galvanized steel pipe, soft slings or ropes that do not damage the anti-corrosion layer should be used to avoid damage to the anti-corrosion layer.
2: Hot dip galvanized steel pipe cannot be treated with casing during transportation, which will easily cause damage to the anti-corrosion layer.
3: Before the hot dip galvanized steel pipe goes down the ditch, the pipe ditch must be cleaned to make the bottom of the ditch flat and free of stones, bricks or other sundries. If the upper layer is very hard, the fine soil should be softened first. After the anti-corrosion steel pipe is lowered into the ditch, it is not allowed to use a crowbar to transfer the pipe, let alone push the pipe directly into the ditch. .
4. The steel pipes with anti-corrosion layer should be separated from each other, and no adhesion should be allowed, so as not to damage the anti-corrosion layer.
5. Before brushing oil, clean up the surrounding environment to prevent dust from flying and keep it clean. In case of strong wind, rain, fog, do not work in the open air.
6. The painted pipe paint layer should prevent freezing, impact, vibration and drastic temperature changes during the drying process.
We should strictly abide by the transportation and storage regulations of hot-dip galvanized steel pipe to keep it intact and good product characteristics to the greatest extent. We will also fulfill our duty of reminder for our South Korean customers.
Conclusion
South Korea is one of our main trading partners, and many of our products are sold to South Korea. We take our partnership with South Korea very seriously. We will continue to attach importance to product quality and word of mouth, hoping to gain the trust of more customers. Today we finish sharing the knowledge about hot dip galvanized steel pipe here. If you need our steel products, please contact us, you can also pay attention to our website.
