Black pipe is made of steel as is galvanized pipe. The difference is that galvanized pipe is coated with zinc, while the black pipe is not. Black pipe is best used for gas lines, not for water lines because it rusts easily, while the galvanized pipe is the safer pipe to use in water lines, but it cannot be used to convey gas.
Homes need gas and water in order to run comfortably. Gas provides heat and fire to cook food and we cannot live without water. Pipes are used to carrying these essential materials into homes, buildings, and other construction projects to convey or carry gas and water to supply their needs. Two of the most widely used pipes are black pipe and galvanized pipe.
1. What are black steel pipes?
Black steel pipes are made of steel that has not been coated with a substrate such as zinc or paint. Since it has a dark color surface that is formed by iron oxide during the manufacturing process, it is called black steel pipes.
2. What are black steel pipes used for?
Black steel pipes have a variety of use thanks to their strength and needs for little maintenance. They tend to be used for transporting gas and water to rural areas and urban areas or for conduits that protect electrical wiring and deliver high-pressure steam and air. In addition, black steel pipes are also used in oil and petroleum industries for piping large quantities of oil through remote areas.
Other uses of black steel pipes include gas distribution inside and outside homes, water wells, and sewage systems. However, black steel pipes are never used for transporting potable water due to the fact that they tend to corrode in water, and the mineral of the pipe will dissolve into the water and clog the line as well. And black steel pipes are commonly used in fire sprinkler systems thanks to their high heat resistance.
3. What are galvanized steel pipes?
Galvanized steel pipes are carbon steel pipes that are coated with a protective layer of zinc. The zinc layer served as a sacrificial layer, it will get rust before the carbon steel underneath it. Galvanized steel pipes include Two types: hot-dipped galvanized steel pipe and cold galvanized steel pipe. The galvanized layer will strengthen the anti-corrosion performances of steel pipes.
4. What are galvanized steel pipes used for?
Galvanized pipe covered with a layer of zinc, making it a high anti-corrosion ability to help prevent the accumulation of pipe plugging the pipeline. Moreover, even if the zinc layer is scratched or damaged, it can still protect the steel beneath it. Galvanized pipe is mainly used for water supply for residential and commercial buildings, can also be used as a scaffolding frame, because it has a rust-proof effect.
The thicker your zinc coating, the longer the pipe lasts. The environment also plays a crucial role in determining the pipe’s life span. If the pipes are placed in highly corrosive conditions, they often last from 50 to 100 years.
The layer of zinc covering galvanized pipes offers it a higher ability of corrosion protection, but as time goes by it can cause the mineral to flake off and block the pipe, which might lead to a burst. Transporting gas by galvanized pipes is therefore dangerous. Instead, it can be used in outdoor railings, fences, sewage plumbing, and farm irrigation and it is best used for bigger construction projects.
5. The Difference Between Galvanized And Black Pipes
- Galvanized pipes have a zinc coating, but black pipes do not.
- Black steel pipes are darker than galvanized steel pipes, black steel pipes are black, and galvanized steel pipes are silver-gray.
- Galvanized pipes are more expensive and more durable than black pipes because of zinc coating.
- Galvanized pipes are usually used for water transportation whereas black steel pipes for gas delivery.
While there are now safer and stronger pipes made from materials other than steel, black pipes, and galvanized pipes are still very popular and are being used in homes and buildings.
The thing to remember is to use them according to the specifications of the project and to use only one type of pipe in conveying water or gas to your homes. It is not advised to combine two types of piping material.
6. Where to buy/purchase galvanized and black pipes?
SANVO is a good steel pipes and fittings manufacturer, supplier, exporter, wholesaler, factory, and company in China, supplying carbon and stainless steel pipes, carbon and stainless steel pipe fittings, carbon and stainless steel pipe flanges, and stainless steel ball valves. And the steel pipes include galvanized and black steel pipes, seamless steel pipes, and welded steel pipes. We provide the best price and high-quality pipeline products you need, if you are interested, please click here to view more information or contact us for free samples.