Three benefits of Seamless steel pipe
Seamless steel pipes are produced using an extrusion mold. Welded steel pipes are produced by rolling A sheet of steel into A tube and welding the seam. These pipes are less expensive. The third method is casting. Molten steel is poured into A casting mold. This is not very common today.
Increased pressure ratings
Seamless pipe can withstand more pressure than welded pipe. The largest benefit to using seamless steel pipe is the increased pressure ratings. A seamless steel pipe does not have A seam, so the tensile strength is uniform around the entire circumference of the pipe. Steel pipe has nominal pressure ratings that are based on the tensile strength of the alloy (mixture of metals) and the wall thickness of the pipe. Using seamless pipe is more expensive but allows for smaller wall thicknesses and pipe weight, which can affect design and costs.
Seamless pipe maintains its round cross - section. Because seamless steel pipe is A continuous extrusion of the alloy, it takes advantage of true roundness of the circumference. Seamless pipe maintains the round cross - section, which is important during installation and the addition of pipe fittings.
Strength under loads
Seamless steel pipe is easier to design. Although seamless pipe is the most expensive steel pipe, it is the most reliable with the fewest failure points. Because of this, pressure calculations are easier to perform because the weld quality is taken out of the equation. Another advantage to using seamless steel pipe is its strength under loading. Empty pipe has A certain weight that must be supported over long spans.