What is the difference between seamed steel tube and seamless steel tube

There are many kinds of steel pipes, such as: seamed steel pipe, seamless steel tube, then what is the difference between a seamed steel pipe and a seamless steel tube?

Steel pipes are divided into two categories the forming method and the manufacturing method. seamless steel tube and seamless steel tube. Seamless steel tubes can be divided into hot-rolled tubes and cold-rolled cold-drawn tubes. Seamed steel pipes can be further divided into straight seam steel pipes and straight seam steel pipes. The seam here does not mean that there is a gap, but that the steel pipe has weld marks. After processing, it is difficult for the welder to see. So what is the difference between seamed steel tubes and seamless steel tubes?

seamless steel tube

1. Different appearance: the inner wall of the welding part of the seamed steel tube generally has steel bars, while the inner wall of the welding part of the seamless steel tube generally has no welding bars. There are seamed steel pipes, there will be welded straight lines, or the surface will be polished. There is also straightness and uneven thickness.

2. Different pressures: the pressure of the seamed steel tube is generally above 1.6 MPa, while the pressure of the seamless steel tube is generally above 7 MPa.

3. Different uses: Seamed steel pipes can be used to transport low-pressure fluids, such as gas, water, etc., so they are often used in the construction industry. Seamless steel tubes can not only be used for transporting liquids, but also as structural parts, so they are often used in the machinery industry.

4. Different processes: seamed steel pipes need to be rolled first, and then welded. The seamless steel tube is made in one go using the rolling technique. The two are divided according to the processing form. Seamed steel pipes are generally welded. There are two methods of cold drawing and hot drawing for seamless steel tubes. Carbon steel pipe is in terms of material, and galvanized pipe is the surface of the welded pipe after production. Galvanized treatment. Popular: The conveyor carrier has high requirements, such as seamless steel tube for pressure, environment, maintenance, corrosion, temperature, etc. For pressure and temperature requirements, seamed steel pipes, such as domestic water pipes and gas pipes.

The above is the difference between seamed steel tube and seamless steel tube, I hope it will be helpful to everyone. Tianyang Steel Tube is a seamless steel tube company. The Precision seamless steel tubes we provide are of good quality and reasonable price. Welcome to consult and buy.