What are the types of materials and uses of straight seam steel pipes

Straight seam steel pipes come in various materials and have different uses. Today, we'll categorize them as follows:

1. Straight seam steel pipes are mainly used for transporting general low-pressure fluids, such as water, gas, air, oil, and heating steam. The pipe ends are divided into unthreaded and threaded types. The nominal diameter of the steel pipe is usually expressed in inches, and this nominal diameter is an approximation of the inner diameter. Straight seam steel pipes are not only used directly for fluid transportation but also as the original conduit for galvanized welded steel pipes for low-pressure fluid transportation.

2. Ordinary carbon steel wire conduit is a type of straight seam steel pipe used to protect electrical wires in industrial and civil buildings, for installing machinery and equipment, and in other electrical installation projects.

3. Straight seam steel pipes are straight seam steel pipes with a seam parallel to the length of the pipe. They are generally divided into metric electric welded straight seam steel pipes, electric welded thin-walled straight seam steel pipes, and transformer cooling oil straight seam steel pipes.

4. Spiral submerged arc welded pressure fluid transport straight seam welded steel pipe is a spiral welded steel pipe made of hot-rolled strip steel. It is typically formed by a temperature-controlled spiral and welded by double-sided submerged arc welding to transport pressure fluids. The steel pipe has strong pressure-bearing capacity and good welding performance. After various rigorous scientific inspections and tests, it is safe and reliable for use. This steel pipe has a large diameter, high transportation efficiency, and can save on pipeline laying investment. Straight seam steel pipes are mainly used for oil and natural gas pipeline transportation.

5. Spiral welded high-frequency welded steel pipe for pressure fluid transportation is a spiral welded pipe using high-frequency lap welding. It is typically made of hot-rolled strip steel coils, high-frequency lap welding, and is used for transporting pressure fluids. The steel pipe has strong pressure-bearing capacity, good plasticity, and convenient welding processing. After various rigorous scientific inspections and tests, it is safe and reliable for use. The steel pipe has a large diameter and high transportation efficiency. This can save on pipeline laying investment. It is mainly used for oil and natural gas transportation.

6. Straight seam steel pipe is a type of pipe made from hot-rolled steel strip coils as pipe blanks, typically formed by double-sided automatic submerged arc welding or single-sided welding. 

7. Spiral welded high-frequency welded steel pipes, generally used for low-pressure fluid transportation, are formed at a certain temperature using hot-rolled strip steel as the billet.

8. Spiral welded steel pipes for piling are made from hot-rolled steel strip, typically formed by double-sided submerged arc welding or high-frequency welding. They are suitable for foundation piles, such as those in civil structures, docks, and bridges.

Straight seam steel pipes, with their simple production process, high production efficiency, low cost, and rapid development, allow for the production of larger diameter welded pipes using narrower billets, while welded steel pipes of different diameters can be produced using the same billet width. This also reduces productivity, as the weld length increases by 30% and 100% compared to straight seam steel pipe joints.