Applications:

In urban water supply and drainage projects, it is used to transport large amounts of water and sewage. It plays an important role in long-distance pipelines for oil and natural gas transportation. In building structures, it can be used as pile pipes and pillar pipes. In bridge construction, it is used to construct the support structure of bridge piers. In dredging and waterway projects, it is used as a mud discharge pipeline. In thermal pipe networks, it undertakes the task of transporting steam and hot water.

Physical and chemical properties are as follows:

Physical properties:

Density:

About 7.85 g/cm3.

Strength: High compressive and tensile strength, can withstand large internal and external pressure.

Toughness: Has a certain toughness, can adapt to a certain degree of deformation. Wear resistance: Depends on the surface treatment, has a certain wear resistance.

Chemical properties:

Main components:

mainly iron (Fe), containing carbon (C) and a small amount of manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), etc.

Oxidation resistance: Oxidation resistance is average at room temperature, and it is easy to oxidize at high temperature.

Corrosion resistance: Corrosion resistance depends on the specific composition and protective coating. Generally, protective treatment is required to enhance corrosion resistance.

For example, in oil transportation, the high strength of spiral steel pipe can ensure the safety of long-distance transportation; when used in humid underground environment, anti-corrosion coating is often required to resist corrosion.