Iron pipe. Seamless pipe within the meaning of language means seamless pipe. In practice the making, seamless pipe is a pipe that was formed without making a connection at all, so that no part of the pipe that is never compromised or changed material due to the welding heat. This pipe is made of solid steel cylinders, perforated in a state of almost melted, commonly called billet.
In piping systems, pipe types is very restricted for use only for pipes with low pressure for thinness. Even in the oil and gas industry, the pipeline is not used in pressurized pipe system, mostly used as a casing for the foundation, or as a pipe support. The advantage of this pipeline is very large can be made with ease. But this pipeline has the disadvantage of which thickness to be able to make the spiral is fairly limited, so the pipe is relatively thin. In addition, the number of connections per unit long enough to make an inspection of welding becomes more far-more than the straight welded pipe- when will be used as a pressure pipe.