Steel Gas Pipe
Steel gas pipe is a common carrier of natural gas pipelines. The core function of natural gas pipelines is to deliver natural gas safely and efficiently to every household! Steel gas pipe has unique physical properties. Compared with other materials, steel gas pipe can be used for a longer time after proper anti-corrosion treatment.
Steel Gas Pipe Main Types
Seamless Steel Gap Pipe
The seamless process involves heating the steel billet, piercing it, and then drawing it without any welds! Therefore, the Steel Gas Pipe produced by this process has good pressure bearing capacity and is suitable for use in high temperature and high pressure environments, or environments with high safety requirements.
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Welded Steel Gap Pipe
Steel plates are rolled into a specific shape and welded using high-frequency resistance welding or spiral submerged arc welding. Although this method produces more welds, it offers high production efficiency and relatively low costs. Steel gas pipes produced using this process are suitable for medium- and low-pressure city natural gas.
PANDAPIPE sells both types of steel natural gas pipelines! If you want to know more about steel natural gas pipelines and other pipelines, you can click below to contact us! PANDAPIPE is a company integrating production and sales. It was founded in 1998 in Tianjin, China. PANDAPIPE is a company worth looking for near you.
Steel Gas Pipe Advantages
High Strength
Of all natural gas pipeline materials, steel gas pipes are the strongest. Steel gas pipes can withstand extremely high internal and external pressures. Long-distance high-voltage transmission lines and high-voltage networks require no other choice but to use steel gas pipes.
Good sealing performance:
Steel is inherently impermeable. Using the right welding process, a permanently sealed steel natural gas pipeline can be formed, significantly reducing the chance of leakage.
High-temperature resistance:
The melting point of steel natural gas pipelines exceeds 1300°C. When a fire breaks out in the external environment, steel natural gas pipelines can maintain their structural integrity. Therefore, steel natural gas pipelines are used in places with extremely high fire protection requirements.
Long service life
Steel materials are easily resistant to corrosion, but only effective anti-corrosion protection can extend their service life, which is about 40-50 years.
Wide range of pipe diameters
Steel gas pipelines can be produced in a wide range of diameters and wall thicknesses. In some scenarios with large flow requirements, large-diameter steel gas pipelines can be used to undertake transportation tasks.
Steel Gas Pipe Anti-Corrosion Treatment
We’ve mentioned so many advantages of steel pipes, but do you know what their biggest disadvantage is? They’re not corrosion-resistant. But that’s okay, we can still do anti-corrosion treatment on both the inside and outside of steel pipes!
External wall anti-corrosion:
There are two methods for external corrosion protection: protective coating and cathodic protection. Common protective coatings include three-layer polyethylene (3PE) or fusion bonded epoxy (FBE). Cathodic protection is an electrochemical protection method that makes the pipeline the cathode, inhibiting the electrochemical corrosion reaction of the pipeline.
Inner wall anti-corrosion:
Although natural gas is not a corrosive gas, it cannot be ruled out that there may be a small amount of corrosive media such as water and carbon dioxide in it. Therefore, anti-corrosion protection should also be done on the inside, which can not only reduce the corrosion of the inner wall, but also make the inner wall smooth and speed up the flow.
Steel Gas Pipe Application Areas
City gas transmission
This is the core application of steel natural gas, which will be used in high-pressure and sub-high-pressure trunk lines, medium-pressure distribution pipelines, and low-pressure distribution pipelines.
Industrial field
The demand for gas in the industrial sector is also very large. In large factories and industrial parks, steel natural gas pipelines are used to transport gas.
Long-distance gas pipelines
The long-distance transportation of natural gas from the source requires a large diameter pipeline, requiring high strength, high toughness, and thick wall thickness spiral seam submerged arc welded pipes or straight seam submerged arc welded pipes.
FAQs：
1.Can galvanized steel gas pipes be used?
No, galvanized steel pipes are strictly prohibited from being used as gas pipes! The zinc coating reacts with natural gas, producing toxic gases. Furthermore, the chemical reaction can cause the zinc coating to flake off, leading to buildup and blockage in the pipe.
2.What is Corrugated Stainless Steel Gas Pipe?
Corrugated Stainless Steel Gas Pipe is a pipe made of 300 series austenitic stainless steel. Its core feature is that it is very flexible and can be easily bent like a water pipe! The pipe wall thickness is very thin and is annular or spiral corrugated.
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