Seamless steel pipes, as the name suggests, have no seams and are produced by hot rolling and cold rolling.
Welded pipe, on the other hand, is made by rolling coils of steel to the required gauge thickness, a manufacturing process that leaves seams in the pipe body. The next stage is to cut the joints to a width that corresponds to the size of the pipe to be constructed.
Electric resistance welded pipe (ERW), spiral submerged arc welded pipe (SSAW) and straight seam submerged arc welded pipe are three different forms of welded steel pipe (LSAW). These three types of welded steel pipe are manufactured in significantly different ways.
Most of the world's steel production is used in buildings, bridges and other infrastructure in the form of beams, pipes and foundation piles. It makes it possible to build tall buildings because the steel can withstand the pressure created by the weight of the structure.
In addition to the quality of the steel, architects and contractors must choose the type of steel pipe that is best suited for their project. For example, bridge foundations must be able to handle a variety of environmental factors, including earthquakes, ship collisions and strong currents.
Seamless pipes are designed by cold rolling or hot rolling extraction. This process hardens carbon or alloy steel to create a strong yet lightweight product. They take longer to make and are harder to get the size just right.
The advantage of seamless steel pipes is that they can often withstand greater pressures, making them ideal for applications in the oil and gas industry. If the pipes are located in a visible area, there will be no joints exposed to corrosion and they will not look unsightly. When you need very large pipes, the limitations of the production process make it not a good choice.
Welded pipe was originally a flat metal sheet or strip. Bend them into shape and weld the edges together. This means that the diameter and wall thickness of the finished product can be very precise.
These are often used in buildings where precise dimensions are crucial, and are suitable for general use as they are often a more affordable option. Because welded pipe can have multiple seams, it can be made in many different shapes and sizes, including extremely large sizes for construction.